This document discusses nanotechnology concepts including biotemplating, which is the engineering of biological scaffolds at the molecular level. It provides examples of using viruses and other biological materials as templates to form inorganic nanostructures in a bottom-up approach. The advantages of biotemplating include the ability of biological systems to self-assemble and exert molecular control over material nucleation and growth. Challenges include replicating biological structures and features with high precision.
Synthetic biology is an emerging scientific field that combines engineering and biology to design and construct novel biological systems or redesign existing natural biological systems. The document provides a brief history of synthetic biology from 1960 to 2013, highlighting key developments such as the first synthetic genetic circuits in 2000-2003 and the engineering of metabolic pathways. It also discusses topics such as standard biological parts, modeling and design techniques, applications in health, energy and environment, as well as potential risks that need consideration with the further development of the field.
Synthetic biology builds on nanotechnology and biotechnology by adding information technology to model and modify biological systems at the genetic level. It aims to program cells by reengineering genomes and integrating biology with nanotechnology. Researchers can model gene networks, validate circuits, and alter genes to design new cellular functions. The next frontier is bringing such innovations to higher organisms using stem cells. The overall goal is to understand and reprogram biology as an information processing system at the molecular scale.
introduction to Nanobiotechnology
what is nanotechnology
bionanotechnology
classical biotechnology industrial production using biological system
modern biotechnology from industrial processes to noval therapeutics
modern biotechnology immunological enzymatic and neucleic acid based technology
Dna based technology
self assembly and supramolecular chemistry
formation of ordered structure at nano scale
Nanostructure DNA Templates
Synthesis and Purification of Plasmid templates # Fabrication and Preparation of ultrathin carbon-coated TEM Grids # Preparation of Q-CdS/pUCLeu4 or Q-CdS/φχ174 RF II plasmd samples # their characterization
Quantum-confined cadmium sulfide nanoparticles (Q-CdS) formed circular DNA plasmid pUCLeu4 and φχ174 RF II Quantum confined cadmium sulfide
Bionanotechnology and its applications rita martin
Bionanotechnology combination of biotechnology and nanotechnology. Find its applications in various fields Nanotherapeutics, Gene therapy , Immunotherapy, Harmless Viruses, stem cells
The document discusses gene order (synteny) and how it relates to evolutionary divergence between species. It notes that closely related species tend to have similar gene orders, while more distantly related species have undergone chromosomal rearrangements that disrupt synteny. Over time, random breaks and rearrangements of chromosomes change the order and positioning of genes. The document also discusses how computational analysis of gene orders and orthologs between species can provide insights into evolutionary relationships and the number/types of rearrangements between genomes.
Stem cells and nanotechnology in regenerative medicine and tissue engineeringDr. Sitansu Sekhar Nanda
Alexis Carrel, winner of the Nobel Prize in Physiology or Medicine in 1912 and the father of whole-organ transplant, was the first to develop a successful technique for end to end arteriovenous anastomosis in transplantation.
Synthetic biology is an emerging scientific field that combines engineering and biology to design and construct novel biological systems or redesign existing natural biological systems. The document provides a brief history of synthetic biology from 1960 to 2013, highlighting key developments such as the first synthetic genetic circuits in 2000-2003 and the engineering of metabolic pathways. It also discusses topics such as standard biological parts, modeling and design techniques, applications in health, energy and environment, as well as potential risks that need consideration with the further development of the field.
Synthetic biology builds on nanotechnology and biotechnology by adding information technology to model and modify biological systems at the genetic level. It aims to program cells by reengineering genomes and integrating biology with nanotechnology. Researchers can model gene networks, validate circuits, and alter genes to design new cellular functions. The next frontier is bringing such innovations to higher organisms using stem cells. The overall goal is to understand and reprogram biology as an information processing system at the molecular scale.
introduction to Nanobiotechnology
what is nanotechnology
bionanotechnology
classical biotechnology industrial production using biological system
modern biotechnology from industrial processes to noval therapeutics
modern biotechnology immunological enzymatic and neucleic acid based technology
Dna based technology
self assembly and supramolecular chemistry
formation of ordered structure at nano scale
Nanostructure DNA Templates
Synthesis and Purification of Plasmid templates # Fabrication and Preparation of ultrathin carbon-coated TEM Grids # Preparation of Q-CdS/pUCLeu4 or Q-CdS/φχ174 RF II plasmd samples # their characterization
Quantum-confined cadmium sulfide nanoparticles (Q-CdS) formed circular DNA plasmid pUCLeu4 and φχ174 RF II Quantum confined cadmium sulfide
Bionanotechnology and its applications rita martin
Bionanotechnology combination of biotechnology and nanotechnology. Find its applications in various fields Nanotherapeutics, Gene therapy , Immunotherapy, Harmless Viruses, stem cells
The document discusses gene order (synteny) and how it relates to evolutionary divergence between species. It notes that closely related species tend to have similar gene orders, while more distantly related species have undergone chromosomal rearrangements that disrupt synteny. Over time, random breaks and rearrangements of chromosomes change the order and positioning of genes. The document also discusses how computational analysis of gene orders and orthologs between species can provide insights into evolutionary relationships and the number/types of rearrangements between genomes.
Stem cells and nanotechnology in regenerative medicine and tissue engineeringDr. Sitansu Sekhar Nanda
Alexis Carrel, winner of the Nobel Prize in Physiology or Medicine in 1912 and the father of whole-organ transplant, was the first to develop a successful technique for end to end arteriovenous anastomosis in transplantation.
Computational Biology and BioinformaticsSharif Shuvo
Computational Biology and Bioinformatics is a rapidly developing multi-disciplinary field. The systematic achievement of data made possible by genomics and proteomics technologies has created a tremendous gap between available data and their biological interpretation.
Nanobiotechnology involves the manipulation of matter at the nanoscale (1-100 nanometers) for applications in biology. Key developments include the atomic force microscope in 1980, which enabled imaging at the atomic level. Nanoparticles such as quantum dots have been used for in vivo cell imaging due to their strong fluorescent signals. Nanodevices have the potential to improve cancer detection and diagnosis by entering cells to determine which are cancerous. They may also preserve patient samples and make tests faster. Challenges include assessing the toxicity and biocompatibility of nanomaterials. Overall, nanobiotechnology could lead to new biomaterials and analytical tools with applications in medicine such as targeted drug delivery and disease diagnosis and treatment.
Synthetic biology is an interdisciplinary field that applies engineering principles to design and construct new biological systems. It has enabled the design of novel organisms through DNA synthesis and assembly. Key technologies like DNA sequencing and synthesis have accelerated progress in synthetic biology. The field utilizes standard biological parts and computational tools to rationally design and model new systems. Promising applications include production of fuels, drugs and materials. However, synthetic biology also raises social and ethical challenges regarding biosafety, biosecurity and naturalness that warrant careful consideration and oversight.
Nanotechnology involves engineering functional systems at the molecular scale using techniques and tools to construct items from the bottom up. It uses nanofabrication to manipulate and integrate atoms and is of interest to computer engineers as it enables super-high density microprocessors and memory chips. There are two approaches - top-down uses larger tools like lithography to create smaller devices, while bottom-up relies on molecular recognition and self-assembly of smaller building blocks. Current applications include using carbon nanotubes as transistors for faster and more efficient computers, as well as research into quantum computing using qubits to store and transmit data exponentially faster than silicon.
This document discusses nanobiotechnology and how it can be applied in medicine. It describes how nanotechnology allows us to understand and manipulate matter at the molecular level, and how this enables the development of novel biomedical applications like nanobiosensors, nanomedicine, and nanosubmarines for targeted drug delivery. Specific examples mentioned include using ribosomes as nanomemories, biochemical motors like ATPase for powering nanorobots, and developing new insights into DNA structure and function through nanotechnology. The overall message is that nanobiotechnology has great potential for advances in diagnosis, treatment, and understanding of biological processes at the cellular and molecular scale.
Course: Bioinformatics for Biomedical Research (2014).
Session: 3.2- Basic Aspects of Microarray Technology and Data Analysis.
Statistics and Bioinformatisc Unit (UEB) & High Technology Unit (UAT) from Vall d'Hebron Research Institute (www.vhir.org), Barcelona.
Course: Bioinformatics for Biomedical Research (2014).
Session: 1.2- Storing and Accessing Information. Databases and Queries.
Statistics and Bioinformatisc Unit (UEB) & High Technology Unit (UAT) from Vall d'Hebron Research Institute (www.vhir.org), Barcelona.
Bionanotechnology applies nano/microfabrication tools and processes to build devices for studying biosystems at the nanoscale. Researchers learn from biology to create new micro-nanoscale devices. It sits at the interface between chemical, biological, and physical sciences. Molecular biologists help nanotechnologists understand and access biological nanostructures and nanomachines. Antibody-nanoparticle modeling investigates interfacial properties of these bio-nano systems using computer simulations. Nanomedicines, such as lipid or polymer nanoparticles, are taken up by cells and can deliver drugs. DNA is used in molecular nanotechnology and nanorobotics due to its stiffness and self-assembly properties. Nanopore technology detects single molecules of
Biomaterials were defined as “any substance, other than a drug, or a combination of substances, synthetic or natural in origin, which can be used for any period of time, as a whole or as a part of a system, which treats, augments or replaces any tissue, organ or function of the body”
Bio computers use systems of biologically derived molecules—such as DNA and proteins—to perform computational calculations involving storing, retrieving, and processing data. The development of biocomputers has been made possible by the expanding new science of nanobiotechnology.
This document provides an introduction to nanobiotechnology, including its concepts, scope, applications, and future prospects. It defines nanobiotechnology as the combination of nanotechnology and biotechnology, manipulating matter at the nanoscale (1-100 nm) for biological applications. Examples of current applications include growing whole organs like bladders using stem cells, developing targeted cancer drug delivery, and creating polymers to detect metabolites. The future scope may include using molecular manufacturing to program nanobots for delicate surgeries and environmental repair like reconstructing the ozone layer. Overall, the document outlines how nanobiotechnology interfaces biology and nanoscale engineering.
This document discusses using DNA origami as a drug delivery system. DNA origami involves folding DNA into predefined 2D and 3D shapes at the nanoscale. It can be used to create "DNA nanorobots" for targeted drug delivery. One example is a clamshell DNA nanorobot that can encapsulate doxorubicin and selectively deliver it to cancer cells. DNA origami shows potential advantages for drug delivery such as high nuclease resistance, biocompatibility, and ability to selectively target cells. However, challenges remain around the high cost and stability of DNA origami drug delivery systems.
Biomaterials for tissue engineering slideshareBukar Abdullahi
An overview of Tissue Engineering with some basics in Biomaterials and Synthetic Polymers. Further references should be considered as I presented this a specific target audience.
Comparative genomics: Genomic features are compared, evolutionary relationship
The major principle of comparative genomics is that common features of two organisms will often be encoded within the DNA that is evolutionarily conserved between them. orthologous sequences,
Started as soon as the whole genomes of two organisms became available (that is, the genomes of the bacteria Haemophilus influenzae and Mycoplasma genitalium) in 1995, comparative genomics is now a standard component of the analysis of every new genome sequence. comparative genomics studies of small model organisms (for example the model Caenorhabditis elegans and closely related Caenorhabditis briggsae) are of great importance to advance our understanding of general mechanisms of evolution
Computational tools for analyzing sequences and complete genomes. Application of comparative genomics in agriculture and medicine.
This document discusses nano microorganisms, including nanobacteria and nanovirus. Nanomicroorganisms are extremely small microbes between 0.02-0.2 micrometers that can survive in extreme conditions and reproduce through various mechanisms. While nanobacteria may play a role in mineralization and disease, their existence as living organisms remains controversial. Nanoviruses are small plant viruses with segmented genomes that depend on helper components. They can impact agriculture but more research is needed to better understand their properties and life cycles. Nano microorganisms play important roles in areas like agriculture, biotechnology, waste management and medicine.
The document discusses the Gene Expression Omnibus (GEO) database, which is a public repository maintained by the National Center for Biotechnology Information that archives and freely distributes gene expression and other high-throughput functional genomics data submitted by the research community. It outlines the background and purpose of GEO, describes the types of data it contains including platforms, samples, and series. It also lists 10 ways that researchers can utilize and analyze data from GEO, such as performing searches, downloading data files, and using online analysis tools to visualize and compare gene expression data.
The document discusses the applications of nanotechnology in construction. It begins by defining nanotechnology as manipulating materials at the atomic scale to develop new properties. It then discusses how nanomaterials like carbon nanotubes, titanium oxide, and nanocement and silica can improve the strength, durability and self-cleaning abilities of concrete. The document also explains how nanoparticles can enhance steel by reducing fatigue cracking. Nanotechnology enables self-cleaning and fire-resistant glass, as well as paints with insulating and anti-corrosive properties. Shape memory alloys can enable self-repairing structures. In summary, nanotechnology has the potential to revolutionize construction materials by developing stronger, more durable
1. The document discusses the use of nanotechnology in various medical applications including drug discovery, delivery, and tissue engineering.
2. Nanoparticles, nanotubes, and other nanostructures are being used to develop more targeted drug therapies and more effective medical implants and devices.
3. Nanotechnology is also discussed as having applications in surgery, diagnostics, and cancer treatment by enabling earlier detection and more precise interventions.
Computational Biology and BioinformaticsSharif Shuvo
Computational Biology and Bioinformatics is a rapidly developing multi-disciplinary field. The systematic achievement of data made possible by genomics and proteomics technologies has created a tremendous gap between available data and their biological interpretation.
Nanobiotechnology involves the manipulation of matter at the nanoscale (1-100 nanometers) for applications in biology. Key developments include the atomic force microscope in 1980, which enabled imaging at the atomic level. Nanoparticles such as quantum dots have been used for in vivo cell imaging due to their strong fluorescent signals. Nanodevices have the potential to improve cancer detection and diagnosis by entering cells to determine which are cancerous. They may also preserve patient samples and make tests faster. Challenges include assessing the toxicity and biocompatibility of nanomaterials. Overall, nanobiotechnology could lead to new biomaterials and analytical tools with applications in medicine such as targeted drug delivery and disease diagnosis and treatment.
Synthetic biology is an interdisciplinary field that applies engineering principles to design and construct new biological systems. It has enabled the design of novel organisms through DNA synthesis and assembly. Key technologies like DNA sequencing and synthesis have accelerated progress in synthetic biology. The field utilizes standard biological parts and computational tools to rationally design and model new systems. Promising applications include production of fuels, drugs and materials. However, synthetic biology also raises social and ethical challenges regarding biosafety, biosecurity and naturalness that warrant careful consideration and oversight.
Nanotechnology involves engineering functional systems at the molecular scale using techniques and tools to construct items from the bottom up. It uses nanofabrication to manipulate and integrate atoms and is of interest to computer engineers as it enables super-high density microprocessors and memory chips. There are two approaches - top-down uses larger tools like lithography to create smaller devices, while bottom-up relies on molecular recognition and self-assembly of smaller building blocks. Current applications include using carbon nanotubes as transistors for faster and more efficient computers, as well as research into quantum computing using qubits to store and transmit data exponentially faster than silicon.
This document discusses nanobiotechnology and how it can be applied in medicine. It describes how nanotechnology allows us to understand and manipulate matter at the molecular level, and how this enables the development of novel biomedical applications like nanobiosensors, nanomedicine, and nanosubmarines for targeted drug delivery. Specific examples mentioned include using ribosomes as nanomemories, biochemical motors like ATPase for powering nanorobots, and developing new insights into DNA structure and function through nanotechnology. The overall message is that nanobiotechnology has great potential for advances in diagnosis, treatment, and understanding of biological processes at the cellular and molecular scale.
Course: Bioinformatics for Biomedical Research (2014).
Session: 3.2- Basic Aspects of Microarray Technology and Data Analysis.
Statistics and Bioinformatisc Unit (UEB) & High Technology Unit (UAT) from Vall d'Hebron Research Institute (www.vhir.org), Barcelona.
Course: Bioinformatics for Biomedical Research (2014).
Session: 1.2- Storing and Accessing Information. Databases and Queries.
Statistics and Bioinformatisc Unit (UEB) & High Technology Unit (UAT) from Vall d'Hebron Research Institute (www.vhir.org), Barcelona.
Bionanotechnology applies nano/microfabrication tools and processes to build devices for studying biosystems at the nanoscale. Researchers learn from biology to create new micro-nanoscale devices. It sits at the interface between chemical, biological, and physical sciences. Molecular biologists help nanotechnologists understand and access biological nanostructures and nanomachines. Antibody-nanoparticle modeling investigates interfacial properties of these bio-nano systems using computer simulations. Nanomedicines, such as lipid or polymer nanoparticles, are taken up by cells and can deliver drugs. DNA is used in molecular nanotechnology and nanorobotics due to its stiffness and self-assembly properties. Nanopore technology detects single molecules of
Biomaterials were defined as “any substance, other than a drug, or a combination of substances, synthetic or natural in origin, which can be used for any period of time, as a whole or as a part of a system, which treats, augments or replaces any tissue, organ or function of the body”
Bio computers use systems of biologically derived molecules—such as DNA and proteins—to perform computational calculations involving storing, retrieving, and processing data. The development of biocomputers has been made possible by the expanding new science of nanobiotechnology.
This document provides an introduction to nanobiotechnology, including its concepts, scope, applications, and future prospects. It defines nanobiotechnology as the combination of nanotechnology and biotechnology, manipulating matter at the nanoscale (1-100 nm) for biological applications. Examples of current applications include growing whole organs like bladders using stem cells, developing targeted cancer drug delivery, and creating polymers to detect metabolites. The future scope may include using molecular manufacturing to program nanobots for delicate surgeries and environmental repair like reconstructing the ozone layer. Overall, the document outlines how nanobiotechnology interfaces biology and nanoscale engineering.
This document discusses using DNA origami as a drug delivery system. DNA origami involves folding DNA into predefined 2D and 3D shapes at the nanoscale. It can be used to create "DNA nanorobots" for targeted drug delivery. One example is a clamshell DNA nanorobot that can encapsulate doxorubicin and selectively deliver it to cancer cells. DNA origami shows potential advantages for drug delivery such as high nuclease resistance, biocompatibility, and ability to selectively target cells. However, challenges remain around the high cost and stability of DNA origami drug delivery systems.
Biomaterials for tissue engineering slideshareBukar Abdullahi
An overview of Tissue Engineering with some basics in Biomaterials and Synthetic Polymers. Further references should be considered as I presented this a specific target audience.
Comparative genomics: Genomic features are compared, evolutionary relationship
The major principle of comparative genomics is that common features of two organisms will often be encoded within the DNA that is evolutionarily conserved between them. orthologous sequences,
Started as soon as the whole genomes of two organisms became available (that is, the genomes of the bacteria Haemophilus influenzae and Mycoplasma genitalium) in 1995, comparative genomics is now a standard component of the analysis of every new genome sequence. comparative genomics studies of small model organisms (for example the model Caenorhabditis elegans and closely related Caenorhabditis briggsae) are of great importance to advance our understanding of general mechanisms of evolution
Computational tools for analyzing sequences and complete genomes. Application of comparative genomics in agriculture and medicine.
This document discusses nano microorganisms, including nanobacteria and nanovirus. Nanomicroorganisms are extremely small microbes between 0.02-0.2 micrometers that can survive in extreme conditions and reproduce through various mechanisms. While nanobacteria may play a role in mineralization and disease, their existence as living organisms remains controversial. Nanoviruses are small plant viruses with segmented genomes that depend on helper components. They can impact agriculture but more research is needed to better understand their properties and life cycles. Nano microorganisms play important roles in areas like agriculture, biotechnology, waste management and medicine.
The document discusses the Gene Expression Omnibus (GEO) database, which is a public repository maintained by the National Center for Biotechnology Information that archives and freely distributes gene expression and other high-throughput functional genomics data submitted by the research community. It outlines the background and purpose of GEO, describes the types of data it contains including platforms, samples, and series. It also lists 10 ways that researchers can utilize and analyze data from GEO, such as performing searches, downloading data files, and using online analysis tools to visualize and compare gene expression data.
The document discusses the applications of nanotechnology in construction. It begins by defining nanotechnology as manipulating materials at the atomic scale to develop new properties. It then discusses how nanomaterials like carbon nanotubes, titanium oxide, and nanocement and silica can improve the strength, durability and self-cleaning abilities of concrete. The document also explains how nanoparticles can enhance steel by reducing fatigue cracking. Nanotechnology enables self-cleaning and fire-resistant glass, as well as paints with insulating and anti-corrosive properties. Shape memory alloys can enable self-repairing structures. In summary, nanotechnology has the potential to revolutionize construction materials by developing stronger, more durable
1. The document discusses the use of nanotechnology in various medical applications including drug discovery, delivery, and tissue engineering.
2. Nanoparticles, nanotubes, and other nanostructures are being used to develop more targeted drug therapies and more effective medical implants and devices.
3. Nanotechnology is also discussed as having applications in surgery, diagnostics, and cancer treatment by enabling earlier detection and more precise interventions.
The Next Very BIG (small) Thing
Contents:
Introduction to Nanotechnology
Applications In Today's Life
Advantages & Disadvantages
Future Of Nanotechnoogy
Nanotechnology involves manipulating matter at the atomic or molecular scale, typically 100 nanometers or smaller. Richard Feynman first suggested the possibility of nanomachines in 1959. Albert Hibbs later suggested using nanomachines for medical purposes like surgery. Current applications of nanotechnology in medicine include more targeted drug delivery, cancer treatment using gold nanoparticles, microsurgery using nanoscale instruments, medical robotics, and tissue engineering. While nanomedicine holds promise, it also raises social, economic, ethical, and safety issues that warrant careful consideration and oversight to ensure its safe and equitable development and use.
This document provides an overview of nanotechnology including its history, definition, and applications. It discusses the following key points:
- Nanotechnology involves engineering at the molecular scale between 1 to 100 nanometers as well as manipulating and controlling matter on an atomic and molecular scale.
- Some applications of nanotechnology discussed include using nanomachines like nanoimpellers to target cancer cells, developing nanobots, improving electronics by reducing transistor size, and delivering drugs using nanoparticles.
- In medicine, nanotechnology is being used for targeted drug delivery, therapies like buckyballs and nanoshells, and developing anti-microbial techniques with nanoparticle creams and cell repairs from nanorobots.
This document provides an overview of nanotechnology. It defines nanotechnology as the study and engineering of matter at the nanoscale, or atomic level. The document outlines the history of nanotechnology from its conception in 1959 to modern applications. Key tools used in nanotechnology like atomic force microscopes and carbon nanotubes are described. The document also discusses different approaches (top-down vs bottom-up), materials used, and applications of nanotechnology in areas like drugs, fabrics, electronics, and computers. It provides examples of how nanotechnology is enhancing performance in these domains.
This document summarizes recent applications of nanoparticles in biology and medicine. It discusses how nanoparticles can be used as fluorescent biological labels, for drug and gene delivery, and for detecting pathogens and proteins. Nanoparticles are a suitable size for biological tagging because they are comparable in size to proteins. The core nanoparticle is often coated with biocompatible materials and attached to biological coatings like antibodies. Recent applications discussed include using nanoparticles to stimulate bone growth for tissue engineering and destroying tumors through localized heating with nanoparticles.
This document summarizes recent applications of nanoparticles in biology and medicine. It discusses how nanoparticles can be used as fluorescent biological labels, for drug and gene delivery, and for detecting pathogens and proteins. Nanoparticles are a suitable size for biological tagging because they are comparable in size to proteins. The core nanoparticle is often coated with biocompatible materials and attached to biological coatings like antibodies. Recent applications discussed include using nanoparticles to stimulate bone growth for tissue engineering and destroying tumors through localized heating with nanoparticles.
This document discusses biochips and their development. It begins with an introduction to biochips, noting they are miniaturized laboratories that can perform hundreds or thousands of biochemical reactions simultaneously. This enables rapid screening of biological analytes for various purposes. The document then provides history on the development of biosensor technologies and microarray fabrication techniques. It also discusses various types of microarrays beyond DNA, including protein, antibody, and chemical compound microarrays. Ethics regarding biotechnology development are briefly covered.
Biomimetic Materials in Our World: A Review.IOSR Journals
The study of biomineralization offers valuable and incredible insights into the scope and nature of material chemistry at the inorganic and organic surfaces. Biological systems (architecture) are replete with examples of organic supramolecular assemblies (double and triplet helices, multisubunit proteins, membrane-bound reaction centres, vesicle, tubules e. t. c.), some of which (collagen, cellulose and chitin) extend to microscopic dimensions in the form of hierarchical structure, There are ample opportunities of lessons from the biological (on growth and functional adaptation), and physical (properties and compositions) world. This review explores the field of biomimetic material chemistry as it relates to fibres with respect to their historical perspective, the use of the products of biomimetic material, the progressive efforts and a general overview. Conclusively, biomimetic materials research is indeed a rapidly growing and enormously promising field that needs to be explored.
This document provides an introduction to nanobiotechnology. It discusses how nanotechnology involves working at the nanoscale of 1-100 nanometers to develop applications in areas like biotechnology. Nanobiotechnology uses nanotechnology techniques to develop and improve biotechnological processes and products like lab-on-a-chip devices and biosensors. The document outlines the differences between classical biotechnology, modern biotechnology, and how biotechnology is evolving into bionanotechnology through the integration of nanoscale techniques. Examples of current nanobiotechnology applications are given in areas like drug delivery, disease diagnostics, and food packaging.
This document discusses how nanofabricated structures and microfluidic devices are increasingly being used to study bacteria. Key points include:
1) These tools provide precise spatial and temporal control that has helped answer questions about bacterial growth, chemotaxis, and social behavior.
2) Microstructures can spatially isolate and track individual bacteria or strains, enabling high-throughput analyses of growth, cell fate decisions, and antibiotic resistance at the single cell level.
3) Microfluidic devices using semipermeable barriers allow study of chemical communication between bacteria through metabolic and signaling molecule exchange.
4) Nanofabricated environments with defined geometric features constrain bacterial growth and reveal how populations rapidly adapt to
Nanotechnology and bioinformatics are emerging branches of science. Nanotechnology involves manipulating matter at the atomic scale between 1 to 100 nanometers. It has led to unique material properties and applications. Bioinformatics uses computational techniques to analyze and interpret large biological data sets, such as DNA sequences. It aids in gene analysis, drug design, and other areas like agriculture and forensics. Both fields rely on interdisciplinary work between areas like physics, chemistry, computer science, and biology.
1) Microfluidic devices handling small liquid volumes can provide cell cultures with an environment mimicking in vivo conditions. This allows studying cell-cell communication and tissue-like structures.
2) Microfluidic devices are fabricated using soft lithography and elastomeric molds like PDMS, as these techniques are compatible with biological applications.
3) Two case studies presented microfluidic devices for depositing two cell types in communicating chambers, and integrating cell culture with on-chip lysis without buffers. These show the potential of microfluidics for advanced cell culture and analysis applications.
Bio nanocomposites are materials produced from biological raw materials and principles or having biological applications. They can be synthesized through self-assembly of biomolecules and inorganic nanomaterials, mimicking nature. Applications include novel nanocomposites for artificial bone implants, carbon composites like carbon nanotubes and buckminsterfullerene, and controlled assembly of bioinorganic materials using live cells. These materials have properties dependent on their nanoscale structures, and future research aims to develop adaptive and intelligent macrostructures using nano and biotechnologies.
This document discusses tissue engineering and the use of scaffolds for growing cells. It describes several scaffold design techniques including nanofibre self-assembly, gas foaming, CAD/CAM technologies, and electrospinning. Scaffolds provide a structure for cells to attach, migrate, and grow into tissues. The future of this technology could enable the creation of more complex organs and possibly whole bodies. However, issues around cost and ethics will need to be addressed as the technology advances.
Nanotechnology involves controlling and manipulating matter at the atomic and molecular scales, generally 100 nanometers or smaller. It has a wide range of potential applications but also raises concerns about environmental and health impacts. The term was coined in the 1970s but the concepts date back to Richard Feynman's 1959 talk about manipulating atoms and molecules. Research has accelerated in recent decades due to new technologies like scanning tunneling microscopes that allow viewing and manipulating structures at the nanoscale.
Nanotechnology holds promise for advances in biotechnology and medicine. Its applications could include building faster computers, more efficient solar cells, finding tumors using nanorobots, and improving agriculture. In animal reproduction, nanotechnology is still in its infancy but may transform the livestock sector. Examples include using nanoparticles for sperm preservation and imaging, microencapsulation of sperm for controlled release, and biosensors to detect reproductive hormones for estrus detection. While nanotechnology shows potential, oversight is needed to ensure safety and address societal issues as these applications develop further.
Nanotechnology involves manipulating and controlling materials at the nanoscale, which is approximately 1 to 100 nanometers. It has applications in many areas such as electronics, energy, medicine, and water filtration. Some key benefits of nanotechnology include developing stronger and lighter materials, more effective cancer treatments, and improved solar cells and membranes for water filtration that remove particles down to a few nanometers in size. The future of nanotechnology involves further development of self-assembly techniques to build complex structures at the nanoscale.
This document discusses the potential applications of nanotechnology in periodontics. It begins with background on nanotechnology and describes various nanoparticles and how nanoproducts are made. It then discusses the properties of nanomaterials and how they are used for drug delivery, tissue engineering, biofilm studies, tooth repair, dental implants, and bone replacement. The document concludes by describing hypothetical nanorobots that could one day be used to treat periodontal disease at the molecular level through precise, targeted actions guided by external monitoring.
For many decades, nanotechnology has been developed with cooperation from researchers in several fields of studies including physics, chemistry, biology, material science, engineering, and computer science. Nanotechnology is engineering at the molecular (groups of atoms) level. It is the collective term for a range of technologies, techniques and processes that involve the manipulation of matter at the smallest scale (from 1 to 100 nm2).The nanotechnology provides better future for human life in various fields. In future nanotechnology provides economy, ecofriendly and efficient technology which removes all difficult predicaments which is faced by us in today life scenario. Nanotechnology is the technology of preference to make things small, light and cheap, nanotechnology based manufacturing is a method conceived for processing and rearranging of atoms to fabricate custom products.
The nanotechnology applications have three different categories nanosystems, nanomaterials and nanoelectronics. The impact of the nanotechnology occurred on computing and data storage, materials and manufacturing, health and medicine, energy and environment, transportation, national security and space exploration. There are many applications of nanotechnology which are exciting in our life such as nanopowder, nanotubes, membrane filter, quantum computers etc.
But there are several problems which are occurred with the exploration of the nanotechnology such as the wastes released while making the materials for nanotechnology are released into the atmosphere and can even penetrate human and animal cells and effect their performance, agricultural countries will lose their income as nanotechnology will take over, if any damage is done at the molecular level then it is not possible to revert it.
Presentation on Nano-Robotics/ Nanotechnologyworm12521
Nano robotics, an emerging field at the intersection of nanotechnology and robotics, holds the promise of revolutionizing various aspects of medicine, manufacturing, and beyond. In a PowerPoint presentation on nano robotics, one can explore the intricacies and potential applications of these tiny machines, which operate at the nanoscale, often defined as dimensions less than 100 nanometers. One of the most compelling applications of nano robotics lies in medicine, where these miniature robots can be designed to navigate through the human body, delivering drugs with unprecedented precision to targeted areas, performing intricate surgeries, or even detecting and repairing damaged cells. This could revolutionize treatments for diseases such as cancer, where targeted drug delivery could minimize side effects and maximize efficacy. Additionally, nano robots could be utilized in diagnostics, with the ability to detect and monitor biomarkers for various diseases at an early stage, enabling more timely interventions. Beyond medicine, nano robotics holds promise in environmental remediation, with the potential to clean up pollutants at the molecular level, as well as in manufacturing, where nano robots could revolutionize processes by enabling precise control at the atomic scale, leading to the development of new materials and products with enhanced properties. However, despite the immense potential of nano robotics, there are also challenges and ethical considerations to be addressed, including ensuring the safety and reliability of these tiny machines, as well as considering the potential societal impacts of their widespread deployment. Nevertheless, as research in this field continues to advance, nano robotics stands poised to revolutionize various industries and improve countless lives.
Nanotechnology has applications in crop improvement through genetic modification of plants, targeted delivery of genes and chemicals to cells, and nano-array technologies for regulating plant gene expression under stress. It can help with precision agriculture through sensors for soil/crop monitoring, smart delivery of fertilizers and pesticides, food processing/packaging, and security monitoring. Further developments in nanotechnology for agriculture are expected to be major economic drivers and benefit many stakeholders.
Introduction
Definition
History
Advantages of nanobiotechnology
Applications of nanobiotechnology
Drawback of nanobiotechnology
New features in the nanobiotechnology
Conclusion
References
Novocus Legal LLP Nanomaterial news update 25-31 march 2018Ruchica Kumar
Purpose of this document is to provide readers with a glimpse of recent developments in technical sector of nanomaterials. We have compiled this document from reported facts and our sources are also given herein.
We firmly believe that this would just be the beginning and there would be many more applications possible of described technique. We are only reporting recent developments, but you might be able to find a new application of the material described herein.
Nanotechnology refers to research and technology development at the atomic, molecular, and macromolecular scale, leading to the controlled manipulation and study of structures and devices with length scales in the 1- to 100-nanometers range.
The Department of Veteran Affairs (VA) invited Taylor Paschal, Knowledge & Information Management Consultant at Enterprise Knowledge, to speak at a Knowledge Management Lunch and Learn hosted on June 12, 2024. All Office of Administration staff were invited to attend and received professional development credit for participating in the voluntary event.
The objectives of the Lunch and Learn presentation were to:
- Review what KM ‘is’ and ‘isn’t’
- Understand the value of KM and the benefits of engaging
- Define and reflect on your “what’s in it for me?”
- Share actionable ways you can participate in Knowledge - - Capture & Transfer
Essentials of Automations: Exploring Attributes & Automation ParametersSafe Software
Building automations in FME Flow can save time, money, and help businesses scale by eliminating data silos and providing data to stakeholders in real-time. One essential component to orchestrating complex automations is the use of attributes & automation parameters (both formerly known as “keys”). In fact, it’s unlikely you’ll ever build an Automation without using these components, but what exactly are they?
Attributes & automation parameters enable the automation author to pass data values from one automation component to the next. During this webinar, our FME Flow Specialists will cover leveraging the three types of these output attributes & parameters in FME Flow: Event, Custom, and Automation. As a bonus, they’ll also be making use of the Split-Merge Block functionality.
You’ll leave this webinar with a better understanding of how to maximize the potential of automations by making use of attributes & automation parameters, with the ultimate goal of setting your enterprise integration workflows up on autopilot.
Lee Barnes - Path to Becoming an Effective Test Automation Engineer.pdfleebarnesutopia
So… you want to become a Test Automation Engineer (or hire and develop one)? While there’s quite a bit of information available about important technical and tool skills to master, there’s not enough discussion around the path to becoming an effective Test Automation Engineer that knows how to add VALUE. In my experience this had led to a proliferation of engineers who are proficient with tools and building frameworks but have skill and knowledge gaps, especially in software testing, that reduce the value they deliver with test automation.
In this talk, Lee will share his lessons learned from over 30 years of working with, and mentoring, hundreds of Test Automation Engineers. Whether you’re looking to get started in test automation or just want to improve your trade, this talk will give you a solid foundation and roadmap for ensuring your test automation efforts continuously add value. This talk is equally valuable for both aspiring Test Automation Engineers and those managing them! All attendees will take away a set of key foundational knowledge and a high-level learning path for leveling up test automation skills and ensuring they add value to their organizations.
ScyllaDB is making a major architecture shift. We’re moving from vNode replication to tablets – fragments of tables that are distributed independently, enabling dynamic data distribution and extreme elasticity. In this keynote, ScyllaDB co-founder and CTO Avi Kivity explains the reason for this shift, provides a look at the implementation and roadmap, and shares how this shift benefits ScyllaDB users.
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The Microsoft 365 Migration Tutorial For Beginner.pptxoperationspcvita
This presentation will help you understand the power of Microsoft 365. However, we have mentioned every productivity app included in Office 365. Additionally, we have suggested the migration situation related to Office 365 and how we can help you.
You can also read: https://www.systoolsgroup.com/updates/office-365-tenant-to-tenant-migration-step-by-step-complete-guide/
From Natural Language to Structured Solr Queries using LLMsSease
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That is where AI – and most importantly, Natural Language Processing and Large Language Model techniques – could make a difference. This natural language, conversational engine could facilitate access and usage of the data leveraging the semantics of any data source.
The objective of the presentation is to propose a technical approach and a way forward to achieve this goal.
The key concept is to enable users to express their search queries in natural language, which the LLM then enriches, interprets, and translates into structured queries based on the Solr index’s metadata.
This approach leverages the LLM’s ability to understand the nuances of natural language and the structure of documents within Apache Solr.
The LLM acts as an intermediary agent, offering a transparent experience to users automatically and potentially uncovering relevant documents that conventional search methods might overlook. The presentation will include the results of this experimental work, lessons learned, best practices, and the scope of future work that should improve the approach and make it production-ready.
What is an RPA CoE? Session 2 – CoE RolesDianaGray10
In this session, we will review the players involved in the CoE and how each role impacts opportunities.
Topics covered:
• What roles are essential?
• What place in the automation journey does each role play?
Speaker:
Chris Bolin, Senior Intelligent Automation Architect Anika Systems
Session 1 - Intro to Robotic Process Automation.pdfUiPathCommunity
👉 Check out our full 'Africa Series - Automation Student Developers (EN)' page to register for the full program:
https://bit.ly/Automation_Student_Kickstart
In this session, we shall introduce you to the world of automation, the UiPath Platform, and guide you on how to install and setup UiPath Studio on your Windows PC.
📕 Detailed agenda:
What is RPA? Benefits of RPA?
RPA Applications
The UiPath End-to-End Automation Platform
UiPath Studio CE Installation and Setup
💻 Extra training through UiPath Academy:
Introduction to Automation
UiPath Business Automation Platform
Explore automation development with UiPath Studio
👉 Register here for our upcoming Session 2 on June 20: Introduction to UiPath Studio Fundamentals: https://community.uipath.com/events/details/uipath-lagos-presents-session-2-introduction-to-uipath-studio-fundamentals/
"Scaling RAG Applications to serve millions of users", Kevin GoedeckeFwdays
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The session shares how JioCinema approaches ""watch discounting."" This capability ensures that if a user watched a certain amount of a show/movie, the platform no longer recommends that particular content to the user. Flawless operation of this feature promotes the discover of new content, improving the overall user experience.
JioCinema is an Indian over-the-top media streaming service owned by Viacom18.
QA or the Highway - Component Testing: Bridging the gap between frontend appl...zjhamm304
These are the slides for the presentation, "Component Testing: Bridging the gap between frontend applications" that was presented at QA or the Highway 2024 in Columbus, OH by Zachary Hamm.
LF Energy Webinar: Carbon Data Specifications: Mechanisms to Improve Data Acc...DanBrown980551
This LF Energy webinar took place June 20, 2024. It featured:
-Alex Thornton, LF Energy
-Hallie Cramer, Google
-Daniel Roesler, UtilityAPI
-Henry Richardson, WattTime
In response to the urgency and scale required to effectively address climate change, open source solutions offer significant potential for driving innovation and progress. Currently, there is a growing demand for standardization and interoperability in energy data and modeling. Open source standards and specifications within the energy sector can also alleviate challenges associated with data fragmentation, transparency, and accessibility. At the same time, it is crucial to consider privacy and security concerns throughout the development of open source platforms.
This webinar will delve into the motivations behind establishing LF Energy’s Carbon Data Specification Consortium. It will provide an overview of the draft specifications and the ongoing progress made by the respective working groups.
Three primary specifications will be discussed:
-Discovery and client registration, emphasizing transparent processes and secure and private access
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HERE IS YOUR WEBINAR CONTENT! 'Mastering Customer Journey Management with Dr. Graham Hill'. We hope you find the webinar recording both insightful and enjoyable.
In this webinar, we explored essential aspects of Customer Journey Management and personalization. Here’s a summary of the key insights and topics discussed:
Key Takeaways:
Understanding the Customer Journey: Dr. Hill emphasized the importance of mapping and understanding the complete customer journey to identify touchpoints and opportunities for improvement.
Personalization Strategies: We discussed how to leverage data and insights to create personalized experiences that resonate with customers.
Technology Integration: Insights were shared on how inQuba’s advanced technology can streamline customer interactions and drive operational efficiency.
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Just like life, our code must adapt to the ever changing world we live in. From one day coding for the web, to the next for our tablets or APIs or for running serverless applications. Multi-runtime development is the future of coding, the future is to be dynamic. Let us introduce you to BoxLang.
Dynamic. Modular. Productive.
BoxLang redefines development with its dynamic nature, empowering developers to craft expressive and functional code effortlessly. Its modular architecture prioritizes flexibility, allowing for seamless integration into existing ecosystems.
Interoperability at its Core
With 100% interoperability with Java, BoxLang seamlessly bridges the gap between traditional and modern development paradigms, unlocking new possibilities for innovation and collaboration.
Multi-Runtime
From the tiny 2m operating system binary to running on our pure Java web server, CommandBox, Jakarta EE, AWS Lambda, Microsoft Functions, Web Assembly, Android and more. BoxLang has been designed to enhance and adapt according to it's runnable runtime.
The Fusion of Modernity and Tradition
Experience the fusion of modern features inspired by CFML, Node, Ruby, Kotlin, Java, and Clojure, combined with the familiarity of Java bytecode compilation, making BoxLang a language of choice for forward-thinking developers.
Empowering Transition with Transpiler Support
Transitioning from CFML to BoxLang is seamless with our JIT transpiler, facilitating smooth migration and preserving existing code investments.
Unlocking Creativity with IDE Tools
Unleash your creativity with powerful IDE tools tailored for BoxLang, providing an intuitive development experience and streamlining your workflow. Join us as we embark on a journey to redefine JVM development. Welcome to the era of BoxLang.
2. In this presentation you will go through the introduction to nanotechnology, some basic
concepts about the nanofabrication approaches and techniques, virus display for
nanowire formation, TMV as template for nanowire scaffold and a little bit about the
self assembly , the advantages and disadvantages of biotemplating and future aspects.
2
3. As we all know what is nanotechnology ‘ the study of the controlling matter on the
atomic and molecular scale’. Nanotechnology is very diverse ranging from the extensions
of conventional device physics to completely new approach of self assembling. On the
similar basis we can define nano biotechnology ‘nano bio technology is the engineering
of biological scaffolds at molecular level’. Most of the processes of nanotechnology are
integrated with biology or with the use of biological materials. We will see in the further
slides how we can use biological materials to manufacture some regular geometries and
commercial materials.
3
4. But we need to distinguish slightly between the nanotechnology and molecular
manufacturing (mostly miss used) nanoscale technology is the use of big
machines to make smaller products while the molecular manufacturing is an
anticipated future technology based on Feynman’s vision of factories using
nanomachinaries to build complex products. It promises to bring great
improvements in the cost and performance of manufactured goods, while
making possible a range of products impossible today. Every manufacturing
method is a method for arranging atoms. Most methods arrange atoms crudely;
even the finest commercial microchips are grossly irregular at the atomic scale.
Many of today’s nanotechnologies face the same limit. Chemistry and biology,
however, make molecules defined by particular arrangements of atoms —
always the same numbers, kinds, and bonds. Chemists do this using clever tricks
that don’t scale up well to building large, complex structures. Biology, however,
uses a more powerful method: cells contain molecular machines that read digital
genetic data to guide the assembly of large molecules (proteins) that serve as
parts of molecular machines
4
5. Top-down and bottom-up are two approaches for the manufacture of products. These
terms were first applied to the field of nanotechnology by the Foresight Institute in 1989
in order to distinguish between molecular manufacturing (to mass-produce large
atomically precise objects) and conventional manufacturing (which can mass-produce
large objects that are not atomically precise). Bottom-up approaches seek to have
smaller (usually molecular) components built up into more complex assemblies, while
top-down approaches seek to create nanoscale devices by using larger, externally-
controlled ones to direct their assembly. The top-down approach often uses the
traditional workshop or microfabrication methods where externally-controlled tools are
used to cut, mill, and shape materials into the desired shape and order. Micropatterning
techniques, such as photolithography and inkjet printing belong to this category.
Bottom-up approaches, in contrast, use the chemical properties of single molecules to
cause single-molecule components to (a) self-organize or self-assemble into some useful
conformation, or (b) rely on positional assembly. These approaches utilize the concepts
of molecular self-assembly and/or molecular recognition. Such bottom-up approaches
should, broadly speaking, be able to produce devices in parallel and much cheaper than
top-down methods, but could potentially be overwhelmed as the size and complexity of
the desired assembly increases
5
6. This slide just compares the scale of things made by nature or made by man. Man took
many centuries to learn the ways of nature making the nanoscale materials but still
there are many challenges comes across. Broadly speaking we can classify
nanotechnology under three headings ‘wet’, ‘dry’ and computational nanotechnology.
Wet Nanotechnology: which is the study of biological systems that exist primarily in
water environment?
Dry Nanotechnology: which derives from surface science and physical chemistry e.g.
structures of carbon, silicon etc.
Computational Nanotechnology: This permits the modeling and simulation of complex
nanometer scale structures.
6
7. The most top down fabrication technique is nano lithography. In this process, required
material is protected by mask and the exposed material is etched away.e.g.
Photolithography, Electron and ion based lithography and scanning probe lithography.
Bottom up approach utilizes the concept of molecular self assembly or molecular
recognition and taking the advantage of physicochemical interactions for the hierarchical
synthesis of orders nanoscale structures.
7
8. There are two basic ways for nanosynthesis and these are physical and chemical
methods.
In chemical methods we have :
Sonochemistry
Microwave synthesis
Hydrothermal methods
Solgel methods
Wet chemical coprecipitation etc
8
9. At about 550 million years ago, organisms began to have their simple organic molecules
in order to grow more complex organic matrices which precisely fit form to function.
One of the first ‘bioinspired’ archtectural projects was the contruction of the crystal
palace (1851).In 20th century , scientist began to take a more active interest in nano-
biological world. The father of this approach was R.J.P williams (oxford University), who
instigated a study of the detailed functional use of inorganic elements in biological
systems.
Mann (oxford university) gave the understanding of bio mineralization in terms of
movement and precipitation of inorganic elements within a ‘biological’ system.
The complexity of biological structures and complex systems which give rise to them are
not easily replicated that convinced scientists to directly utilize the natural occurring
materials.
9
10. Biotemplating is the study of biological scaffolds at the nanoscale the important example
are DNA, Viruses and bacteria.
10
11. Bio systems have inherently developed very specific molecular recognition patterns that
can be manipulated through genetic control. It also can be used to exert molecular scale
control over nucleation, growth, and stabilization of inorganic materials, analogous to
the process of biomineralization. Furthermore, due to the remarkable capability of
biological molecules to self-assemble at multiple length scales, the opportunity exists for
designing novel nanomaterials via genetic modification and then constructing
hierarchically assembled structures. The combination of biological self-assembly and
biosynthesis of nanomaterials can enable us to create entirely new concepts
applications and devices.
11
12. Biotemplating seeks to either replicate the morphological characteristics and the
functionality of a biological species or use a biological structure to guide the assembly of
inorganic materials. In the first case, the biological substrate has interesting
morphological characteristics (e.g., diatoms, butterfly wing scales, viruses) and metal
replication is used to provide a more stable and more controllable synthetic substrate.
The replication process typically leads to the
generation of either a negative, positive (or hollow), or exact copy of the template.
Indeed, a large variety of biological species have been used as templates: bacteria,
textiles/paper, hair, cells, insect wings, spider silk, wool, and wood. The majority of the
biological structures that have been used for replication show nanoporous features (e.g.,
diatoms), channels (viruses), and other complex hierarchical architectures (butterfly
wings). The level of precision in replicating nanoscale topographies and features is the
major challenge. In the second case concerning the biologically guided assembly of
nanomaterials, a natural biological system is used to nucleate inorganic structures and
promote pattern formation. This is ubiquitously directed by
covalent/noncovalent interactions and molecular recognition processes. For such
interactions to take place, the biological structures must present specific
physicochemical and/or morphological attributes to direct the assembly of inorganic
structures into technologically useful platforms. Such attributes can include a secluded
inner channel or inner cavity that is accessible only by molecules of specific size/charge,
or the presence of a unique functional group at specific locations.
12
13. There is already quite a long list of biological materials that have been successfully
replicated for the formation of artificial structures, and these include cotton/cloth, pine
wood, human and animal hair, silk, and wool, viruses, bacteria, DNA and proteins.
13
14. The video is taken from :www.youtube.com (with the title virus)
14
16. Virus Display with Inorganic Materials:
(a) A combinatorialvirus library is obtained or synthesized that expresses random
peptide fusions (color shaded areas).
(a) The virus library is exposed to a substrate (typically an inorganic single crystal) and
positive binding interaction of
the peptide fusion is allowed to occur with the substrate.
(c) After washing the virus interactions with detergents to ensure specific binding to the
substrate, the successful binding viruses are isolated via a disruption in binding
conditions, typically using a change in pH. The isolated viruses are amplified in their
bacterial host and reintroduced to a fresh substrate surface. The process between (b)
and (c) is repeated several times with the isolated and amplified viruses, mimicking an
evolutionary cycle.
(d) Once the (b) to (c) cycle is complete (typically 3 rounds), the DNA from the virus is
isolated and sequenced to determine the identity of the peptide responsible for binding
to the substrate.
16
17. The M13 phage pIII constructs used in the selection experiments, with the peptide
displayed only on one end of the filamentous phage, were used in the first M13-based
nanocrystal growth studies. In particular, two phage-bound peptide sequences that were
selected for ZnS, named Z8 and A7, were shown to control ZnS particle size and shape at
room temperature, under aqueous conditions.
Wild-type clones (no peptide insert) were used as a control. Transmission electron
microscopy (TEM), high resolution TEM (HRTEM), scanning TEM (STEM) and electron
diffraction (ED) data revealed that the addition of a ZnS-specific phage clone affected
particle size and formed discrete ZnS crystals. Crystals grown in the presence of the Z8
clone were observed to be approximately 4 nm in size of the zinc blende phase. For the
A7 virus, nanocrystals grown were 4 nm by 2 nm in size of the wurtzite crystal phase.
Particles grown without the ZnS-specific phage clones or with wild type clones were
non-crystalline and were much larger (100–500 nm) in size distribution.
17
18. Schematic diagram depicting an engineered M13 virus displaying peptides to direct
nucleation of inorganic materials and/or further assemble viruses into complex
heterofunctional arrays.
(a) M13 virus, with peptides fused to pIX shown ingreen, to pVIII shown in orange, and
to pIII shown in blue.
(b) Nanoparticles represented as spheres localized on the viruses illustrate the potential
of multiple materials engineering into one viral structure, whose length and shape can
be custom-tailored depending on the genome size engineered.
18
19. An overall advantage to this genetic programming approach to materials engineering, in
addition to materials-specific addressability, is the potential to specify viral length and
geometry. The length of a filamentous virus is related to the size of its packaged genetic
information and the electrostatic balance between the pVIII-derived core of the virion
and the single-stranded DNA.
19
20. Additionally, viruses can be conjugated with one-dimensional nanowires/nanotubes,
two dimensional nano electrodes, and microscale bulk devices. One-dimensional
materials, such as nanotubes or nanowires, when conjugated with the pIII end of M13
viruses, may form phase separated lamellar structures that have inorganic nanotube or
nanowire layers and phage building block layers.
Two-dimensional nano-thick plate shaped electrodes can be organized. Alternative
cathode and anode structures might be useful for future nanosize biofuel cells. When
the specific binding M13 virus is combined with micro-size objects, periodic organization
of these micro-dimensional objects is also possible
20
31. Self-assembly is a term used to describe processes in which a disordered system of pre-
existing components forms an organized structure or pattern as a consequence of
specific, local interactions among the components themselves, without external
direction
Distinctive features: At this point, one may argue that any chemical reaction driving
atoms and molecules to assemble into larger structures, such as precipitation, could fall
into the category of SA. However, there are at least three distinctive features that make
SA a distinct concept.
Order:First, the self-assembled structure must have a higher than the isolated
components, be it a shape or a particular task that the self-assembled entity may
perform. This is generally not true in chemical reactions, where an ordered state may
proceed towards a disordered state depending on thermodynamic parameters.
Interactions:The second important aspect of SA is the key role of weak interactions (e.g.
Van der waals, pi-pi attractions, hydrogen bonds) with respect to more "traditional"
covalent, ionic or metallic bonds. Although typically less energetic of a factor 10, these
weak interactions play an important role in materials synthesis. It can be instructive to
note how weak interactions hold a prominent place in materials, but especially in
biological systems, although they are often considered marginally with respect to
"strong" (i.e. covalent, etc.) interactions. For instance, they determine the physical
properties of liquids, the solubility of solids, the organization of molecules in biological
membranes.
Building blocks: The third distinctive feature of SA is that the building blocks are not
only atoms and molecules, but span a wide range of nano- and mesoscopic structures,
with different chemical compositions, shapes and functionalities. These nanoscale
building blocks (NBBs) can in turn be synthesised through conventional chemical routes
or by other SA strategies.
31
32. Self-assembly has a fundamental advantage over mechanically directed assembly: It
requires no machinery to move and orient components, letting random, Brownian
motion do the job instead. Selective binding between uniquely matching surfaces
compensates for the randomness of the motions that bring components together.
Molecular synthesis methods and self-assembly can be used to produce atomically
precise nanosystems by the billions, and even by the ton, thereby establishing a
technology base with wide-ranging applications that can drive development forward.
The architecture of biomolecular fabrication is based on the use of programmable
machines to produce the complex parts necessary for self-assembly of complex systems.
The same fundamental architecture can be extended to use artificial biomolecular
machines (and then non-biomolecular machines), resulting in products made of better
and more diverse engineering materials.
32
33. The most fundamental disadvantage of pure self-assembly is that for every product, the
structure of the parts must encode the structure of the whole. This requires that
components be more complex, which tends to make design and fabrication more
difficult. Another consequence is that a self-assembled product will be partitioned by
complex internal interfaces that have no operational function. Unless they are
strengthened after assembly, these interfaces will weak. These are major constraints.
Mechanically directed assembly avoids these constraints. Because components need not
encode the structure of a product, they can be simple and standardized, and they can be
chosen for their functional properties with less concern for how they are put together.
This will enable more straightforward design and fabrication, but one must make the
necessary machinery — and I expect that this will be accomplished by means of self-
assembly.
33
34. Linear single-stranded DNA templates have been used to direct the ordered assembly of
Au nanoparticles tagged with Complementary oligonucleotides. But it can’t be used to
make more complex structures. Hence, synthetic DNA molecules featuring branched
junction motifs have been designed. “Sticky ends” flanking the junctions enable the self-
assembly of these novel DNA sequences into 2D and 3D architectures, such as lattices
and grid. DNA nanotechnology is an area of current research that uses the bottom-up,
self-assembly approach for nanotechnological goals. DNA nanotechnology uses the
unique molecular recognition properties of DNA and other nucleic acids to create self-
assembling branched DNA complexes with useful properties.
34
35. There are two types of self-assembly, intramolecular self-assembly and intermolecular
self-assembly. Most often the term molecular self-assembly refers to intermolecular
self-assembly, while the intramolecular analog is more commonly called folding. (folding
is the process by which a molecule assumes its shape or conformation. The process can
also be described as intramolecular self-assembly where the molecule is directed to
form a specific shape through noncovalent interactions, such as hydrogen bonding,
metal coordination, hydrophobic forces, van der Waals forces, pi-pi interactions, and/or
electrostatic effects.)
The fig at the bottom shows the micelle formation by self assembly of detergent
molecules and protein molecules. The hydrophobic tails are arranged in such a way to
form a micelle with protein core.
35
36. Notable advantages of biotemplating in nanostructure fabrication include the sheer
structural diversity of available biological species and materials, as well as the
sophisticated architectures (1D, 2D, and 3D) and degree of complexity achievable.
Together, these elements provide for the creation of a diverse range of novel materials
with an unprecedented repertoire of dimensions (resolution <100 nm) and
morphologies that extend beyond what is currently possible with conventional
lithography/ etching techniques. The biotemplating approach is also potentially more
cost- and time-effective (parallel fabrication
approach) when compared with current serial techniques (e.g., electron beam
lithography, X-ray lithography) for nanostructure fabrication. In addition, the repetitive
topochemical features and variety of functional groups found in many biological
materials, can be exploited for the in situ synthesis and directed self-assembly of both
organic and inorganic nanostructures under mild conditions without the use of harsh
chemical treatments. And finally, biotemplates
are also highly amenable to very (spatially) precise modifications at the molecular level
through rational genetic engineering and/or targeted chemical modifications. Taken
together, these attributes lead to a “biomolecular tool-kit” that offers great diversity and
a facile approach for the fabrication of a variety of structures and devices. The full range
of possibilities that biological templates have to offer has only just started to be
explored. Indeed, researchers are just beginning to grasp an understanding of the effects
of nanoscale topographies on the optical, chemical, and electrical properties of
materials. On the basis of these initial reports, there is clearly great potential for using
biological materials to develop entirely new types of sensing systems
that display superior selectivity and sensitivity over existing conventional designs.
36
37. However, for biotemplating to become more established as a reliable
nanofabrication approach, several limitations that currently exist will need to be
overcome. Most notably, as the biotemplating technique is a relatively new
approach, it still lacks the high yield levels and precise uniformity provided by
other synthetic fabrication methods. In particular, large-scale fabrication may be
an issue in some cases because of a lack of sufficient quantities of purified
biological material, or because of a lack of long-range order in the final product
due to intrinsic lattice/morphological defects in the biotemplate itself. Moreover,
because the exact mechanisms by which biological entities form defined patterns
and direct the growth of crystalline materials are not yet fully understood,
biotemplating studies are often conducted in a highly empirical manner. This
often requires a significant amount of effort to be spent in trial and error
experiments, with results that are in some cases neither predictable nor always
repeatable. Finally, there remains a great need for scientists to develop a better
understanding of the biological-materials interface in general. Current surface
functionalization methods for the creation of engineered substrates for the
deterministic, oriented attachment of biological molecules still lack the degree of
control necessary to be useable on a large scale, such that high quality and high
uniformity can be reproducibly achieved.
37
38. Biotemplating also poses a number of substantial intellectual challenges. The brief
summary of these challenges is that we do not yet know how to do it, and cannot even
mimic those processes known to occur in biological systems at other than quite
elementary levels. Although there are countless examples of Biotemplating materials all
around us--from molecular crystals to mammals--the basic rules that govern these
assemblies are not understood in useful detail, and processes cannot, in general, be
designed and carried out "to order" and to solve these issues we need a
multidisciplinary approach.
38