A new “nano machine shop” that shapes nanowires and ultrathin films could represent a future manufacturing method for tiny structures with potentially revolutionary properties. The structures might be tuned for applications ranging from high-speed electronics to solar cells and also may have greater strength and unusual traits such as ultrahigh magnetism and “plasmonic resonance,” which could lead to improved optics, computers and electronics. The researchers used their technique to stamp nano- and microgears; form tiny circular shapes out of a material called graphene.
This illustration depicts a new nano machine shop‘s ability to shape tiny wires, an advance that represents a possible future manufacturing method for applications ranging from high-speed electronics to solar cells. © Purdue University / Gary Cheng
Ji Li, Ting-Fung Chung, Yong P. Chen, and Gary J. Cheng: Nanoscale Strainability of Graphene by Laser Shock- Induced Three-Dimensional Shaping, In:Nano Letters, Volume 12, Issue 9, September 12, 2012, Pages 4577- 4583, DOI: 10.1021/nl301817t:
http://dx.doi.org/10.1021/nl301817t
The paper, “NASA‘s Relationship with Nanotech- nology: Past, Present and Future Challenges,” investigates how NASA has both guided and defunded cutting-edge nanotechnology development since 1996 at its own research facilities and in its collaborations with university scientists and labora- tories.
http://news.rice.edu/2012/10/16/nasa-must-reinvestin- nanotechnology-research-according-to-new-rice-university- paper/
“NASA’s Relationship with Nanotechnology: Past, Present and Future Challenges”:
http://www.bakerinstitute.org/policyreport54
Researchers at the US Department of Energy’s National Renewable Energy Laboratory (NREL) believe that they have struck a balance between conversion efficiency and manufacturing costs by developing a nanotechnology-enabled silicon solar cell that boasts 18.2% conversion efficiency and that should be cheaper to produce.
Jihun Oh, Hao-Chih Yuan & Howard M. Branz: An 18.2%-efficient black-silicon solar cell achieved through control of carrier recombination in nanostructures, In: Nature AOP, September 30, 2012, DOI:10.1038/nnano.2012.166:
http://dx.doi.org/10.1038/nnano.2012.166 http://spectrum.ieee.org/nanoclast/semiconductors/ nanotechnology/nanostructured-silicon-solar-cells-achieve- high-conversion-efficiency-without-antireflective-coatings
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93