2. On the table below, make a wish list of technological innovations
concerning each area of science that you wish one day will come to
reality.
3. NANOWORLD
Define nanotechnology;
Characterize nanoscale;
Describe the various use of nanotechnology;
Discuss concerns on the uses of nanotechnology;
10. 1 mm = 1000 micrometers
1 micrometer = 0.001 mm
1 micrometer = 1000 nanometers
11.
12.
13. NANOSCIENCE
Nanoscience is the study of phenomena and manipulation of
materials at atomic, molecular and macromolecular scales,
where properties differ significantly from those at a larger
scale.
Nanotechnologies are designs and production of structures,
devices, and systems with unique properties by fine-tuning the
physical, chemical, mechanical, and optical properties of
materials at the nanoscale (Department of Science and
Technology, 2015).
21. Benefits and
Concerns about
NanoTechnology
1. Nanotechnology is not a single technology; it may
become prevalent.
2. It seeks to develop new materials with specific properties.
3. New efficiencies and paradigms may be introduced that
may render certain natural resources and current practices
uncompetitive or obsolete.
4. It may be complicated to detect its presence unless one
has the specialist tools of nanotechnology
22.
23. Make a simple concept map showing the potential and
realized impacts of nanotechnology on society.
At present, advances in science and technology have become more apparent. Inventions and new technologies transformed the world and the everyday lives of every one of us. Many things that were mere visions of the future yesterday are now a reality. But of course, there are still a lot of tech innovations that remain as a goal.
On the table below, make a wish list of technological innovations concerning each area of science that you wish one day will come to reality.
Elicit from students that micro means something is small and cannot be seen with the unaided human eye. Tell students that objects on the micro scale are measured in micrometers and that there are 1 million micrometers in a meter. Micro objects need to be viewed using tools such as optical microscopes.
Elicit from students that micro means something is small and cannot be seen with the unaided human eye. Tell students that objects on the micro scale are measured in micrometers and that there are 1 million micrometers in a meter. Micro objects need to be viewed using tools such as optical microscopes.
Micro objects need to be viewed using tools such as optical microscopes. microscope, instrument that produces enlarged images of small objects, allowing the observer an exceedingly close view of minute structures at a scale convenient for examination and analysis.
Just as human understanding of the natural world was revolutionized by the discovery of light microscopes, modern microscopes that can expose and change individual atoms are once again exposing a whole new world-the nano world. Scientific researchers have developed new technological tools that greatly improved different aspects of our lives through the use of nanoscale.
Elicit from students that nano means something is very, very small and cannot be seen with the unaided human eye or even with most microscopes. Tell students that things on the nano scale are measured in nanometers and there a 1 billion nanometers in a meter. Nano objects need to be viewed using advanced, powerful electron microscopes.
Nanotechnology is defined as the study and use of structures between 1 nanometer and 100 nanometers in size. These include the design, characterization, production and application of structures, devices and controlling shape and size on a nanometer scale. (Royal Society, 2004). It is just like studying eight hundred 100 nanometer particles side by side to match the width of a human hair.
Nanoscience is the study of phenomena and manipulation of materials at atomic, molecular and macromolecular scales. This includes the study of materials 100nm own to the size of atoms which is approximately 0.2nm. For comparison, a red blood cell is approximately 7, 000nm wide and a water molecule is almost 0.3 nm across. (K. Ban et.al, 2011.)
Studying
Studying nanoparticles has been an interest of scientist for centuries and the field flourished with the development of microscopes capable of displaying particles called nanomaterial.
A nanomaterial is an object that has at least one dimension on the nanometer scale (app. 1-100nm); material can be in one dimension (very thin surface coatings, films, layers), in two dimensions (nanowires, nanotubes and fibers) or in all three dimensions (nanoparticles, quantum dots, nanoshells, nanorings, micro).
Nanomaterials are of two types. Inorganic nanomaterial which includes gold nano clusters, fullerenes and carbon nanotubes. Organic nanomaterials on the other hand are made up of carbon compounds. To build such, nanotechnologists employ self-organization using the molecules that can be assembled house in an environment suitable for physical and chemical assembly. This type of nanomaterial results in the growth of artificial layers of skin, liver tissues and other organs. (Lohith, 2014).
Why do we need to stud Nanotechnology?
How can Nanotechnology change your lives?
Nanotechnology has various applications in different sectors of the society and environment. However, there are concerns that need to be addressed before using and promoting materials derived from nanotechnology.
