Titanium dioxide - Svaya Feb 2013
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Svaya Nanotechnologies creates precision multilayer coatings using a layer-by-layer assembly technique. They developed a new method to synthesize small titanium dioxide nanoparticles needed to produce reflective coatings. Their coatings can be applied at an industrial scale and provide uniform reflectivity and structural color. Svaya is looking for new applications for their particles and coatings in both solution and film forms.
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The document discusses top-down and bottom-up processes for manufacturing structures at the nanoscale. Top-down processes start with bulk material and use techniques like lithography and etching to pattern structures, while bottom-up processes build structures from the atomic or molecular scale using self-assembly. Both approaches are needed as bottom-up is required to make smaller structures than lithography allows, and applications include growing carbon nanotubes, nanodots, and using self-assembled monolayers. Challenges of bottom-up include controlling assembly, but the future will see more integration of both top-down and bottom-up nanomanufacturing.
nanotechnology and carbon nanotubes
brief description on how nano technology and carbon nanotubes work in engineering...future scope of carbon nano tubes and development of existing machines with nanoparticles
Lithium-ion battery - Challenges for renewable energy solutions - InnoVentum ...
Background on InnoVentum and ADB (Asian Development Bank)
InnoVentum is striving to give Power to the People by making renewable energy affordable and available.
• 1.6 billion people have no access to electricity at all. To start with, InnoVentum is targeting “island economies” like the Philippines, the Maldives and Sri Lanka where most energy today is produced by diesel and gasoline generators.
• InnoVentum is offering a typhoon-resilient solar-wind hybrid solution called the Dali PowerTower and this needs a battery back-up.
• Most human aid organisations today require significant capacity – amounting to 30 kWh per set – and modern Li-
Ion Battery (LIB) technology, but expect lowest possible LCOE (Levelised Cost of Energy) and best possible
sustainability/LCA.
• InnoVentum is using iKnow-Who to organise a collaborative University Competition
nanotechnology.pptx
This document discusses the use of nanotechnology in construction materials and finishing materials. It begins by defining nanotechnology and describing how it can help with sustainability goals like reducing greenhouse gas emissions. It then outlines various nanomaterials that can be used in construction, such as nano-concrete, nano-iron, and nano-treated wood. It provides examples of nanomaterials and their functions, like titanium dioxide for self-cleaning. The document also discusses the costs and pros and cons of nanomaterials, and provides some examples of nanotechnology applications in architecture, like self-cleaning building facades.
Chemical vapour deposition
Chemical Vapour Deposition is a Chemical Synthesis route of Nanomaterials. Specially thin films like Graphene and Carbon NanoTubes are grown by this method.
Similar to Titanium dioxide - Svaya Feb 2013 (20)
Utilization of Nanotechnology and Nanomaterials in Biodiesel Production and P...
Utilization of Nanotechnology and Nanomaterials in Biodiesel Production and P...
Lithium-ion battery - Challenges for renewable energy solutions - InnoVentum ...
Lithium-ion battery - Challenges for renewable energy solutions - InnoVentum ...
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Polar bear positioning
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Surfuzion - Marblar Nov 12
The document describes Surfuzion's nano surface technology which creates nanometer-thin, conformal coatings using nanoparticles. It can coat most surfaces like metals, semiconductors, and nonconductors. The coatings can be polymers, precious metals, ceramics, biomaterials, or combinations. Key features include being done at ambient temperature to prevent degradation, with high precision and conformity on variable geometries. It addresses shortfalls of alternative techniques like vacuum deposition and electroplating by being lower cost, hazardous, and energy intensive while achieving ultra precision and multi-functionality. Potential applications highlighted are in biotech, electronics, sensors and advanced materials.
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CLIM
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Superman-vision
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SlipChip - Oct 2012
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Titanium dioxide - Svaya Feb 2013
- 1. svaya svaya svaya nanotechnologies 1 Titanium Dioxide Nanoparticles Dr Ben Wang, Founder
- 2. svaya svaya 2 What’s Svaya up to? Svaya Nanotechnologies • Create a wide range of high-quality surface coatings at industrial scale (see slide 3) • All based on MIT research on layer-by-layer assembly (explained in slide 4 & 5) • For one specific application (reflective surface coatings based on titanium dioxide) we had to develop a new TiO2 nanoparticle synthesis method (see slide 7) • We’re now looking for new applications for the particles, both is solution- or coating-form
- 3. svaya svaya Precision and uniformity using simple processing 3 3/18/2022 Svaya Nanotechnologies Biomimetic Structural Color Uniformity and Precision: reflectivity Industrial Scale Processing Using our methods we can create precise & uniform films over large scales. One example: reflective films based on alternating high- and low-refractive index layers.
- 4. svaya svaya 4 Layer by Layer Assembly Svaya Nanotechnologies This is the technique we use to create all our coatings: • Gradually build up multilayer nanoscale films • Alternating deposition of +ve/-ve species (with rinsing steps) • Water based solutions and chemistries • Wide range of components polymer polymer nanoparticle polymer nanoparticle nanoparticle 50-2000 nm
- 5. svaya svaya 5 3/18/2022 MBE - “molecular beaker epitaxy” Svaya Nanotechnologies Ariga et al., Phys Chem Chem Phys (2007) de Villiers et al., Advanced Drug Delivery Reviews 63:9, 701–715 (2011) Robust charge reversal Controlled Growth Advantages of solution-based LbL methods • Linear growth of film thickness with layer number • No degradation in adsorption efficiency • Control comparable to vacuum-deposition methods like molecular beam epitaxy, but at industrial scale
- 6. svaya svaya Some other examples of our LbL coatings 6 3/18/2022 Svaya Nanotechnologies
- 7. svaya svaya 7 To create reflective films we had to invent a new small (10 nm) TiO2 nanoparticle using an inexpensive process Titanium Precursor + others (hydrolysis) (Sol) (hydrothermal synthesis) time heat pressure (ostwald ripening) TiO2 nanoparticles (LbL) Nanoparticle Dispersion Nanoparticle film/coating (use as is) Svaya Nanotechnologies Why TiO2? • Needed a high-refractive index layers (see first slide) • Were unable to find inexpensive, small, uniformly sized TiO2 nanoparticles • Developed our own method
- 8. svaya svaya Characterizing the nanoparticles Kurt et al., J Mat 2009 TEM of particles xTEM of multilayer film Svaya Nanotechnologies • Even size distribution, several-fold smaller than commercial alternatives • Result in very thin, uniform films during LbL deposition
- 9. svaya svaya Svaya Nanotechnologies Company Confidential 9 3/18/2022 Thank you! Excited to see your ideas for our particles or coatings