Presentation on theme: "Nanotechnology R&D impacts many industries Electronics Materials Health/Biotech Chemical Environmental Energy Aerospace Automotive Security Forest products."— Presentation transcript:
Nanotechnology R&D impacts many industries Electronics Materials Health/Biotech Chemical Environmental Energy Aerospace Automotive Security Forest products Instrumentation More Discussion on Nanotechnology Applications
Making Small Smaller An Example: Electronics-Microprocessors ibm.com macroscale microscale nanoscale
Electronics Keep On Getting Better Moore's "Law": Number of Transistors per Microprocessor Chip intel.com
Specialized Nano-Coatings Inframat hardened coatings for Navy high-wear parts Self-cleaning surfaces - like a Lotus leaf (ultrahydrophobic) Biocompatible coatings for long lasting orthopedic joints
Super Adhesives Adhesive force of a single gecko foot-hair Nature 405, 681-685 (8 June 2000) Microfabricated Adhesive Mimicking Gecko Foot-Hair Nature Materials 2, 461-463 (2003)
Solar Cells and Integration of Nanotechnology Organic/Inorganic solar cells Silicon solar cells are most common and efficient right now. Reflection of incoming light is a big natural limitation for efficiency. Konarka Evergreen Solar, Inc. Marlboro, MA
Top side metallization grid Sunlight 0.5 µm n + emitter Average phosphorus~10 18 cm -3 ~100-300 µmBoron~10 16 cm -3 p base Optional p + back surface diffusion Back side metallization Typical P-N Junction Silicon Solar Cell Structure REFLECTION! Anti-reflection coating
Pattern Transfer by Etching (Tunable Anti- Reflective Coating) J. Vac. Sci. Technol. B 20.6., Nov. Dec 2002 UMASS Can work as an anti- reflective coating! NNIN.ORG Moth Eye
Source: http://www.berkeley.edu/news/media/releases/2002/03/28_solar.html Nano solar cell: Inorganic nanorods embedded in semiconducting polymer, sandwiched between two electrodes ] 200 nm Other Nano-Solar Cells Nano solar cells mixed in plastic could be painted on buses, roofs, and clothing!
Flat Panel Displays, Colorants, Smart Papers …(Photonic Crystals) PHYSICAL REVIEW E 74, 021922 2006 Reflection from butterfly wings and beetles exocuticle 2 April 2007 / Vol. 15, No. 7 / OPTICS EXPRESS 4351
Quantum dots glow in UV light –Injected in mice, collect in tumors –Could locate as few as 10 to 100 cancer cells Sources: http://vortex.tn.tudelft.nl/grkouwen/qdotsite.html http://www.whitaker.org/news/nie2.html Early tumor detection, studied in mice Quantum Dots: Nanometer-sized crystals that contain free electrons and emit photons when submitted to UV light Nanogold Disease Detection (Using Quantum Dots) Gold Color ?
Some resources on nano applications http://www.nanotechproject.org/index.php?id=44&action=intro The Woodrow Wilson Center consumer product inventory The Nano 50 awards http://www.nanotechbriefs.com/nano50_winners.html http://www.smalltimes.com/ Small Times magazine