asteroza + reflection   15

Jeeva Wireless
Using modulated passive reflection of ambient signal to achieve low power but reasonable wifi speed.
passive  low  power  wifi  RF  signal  reflection  modulation  wireless  research  technology  Delicious 
december 2016 by asteroza
1112.3266.pdf (application/pdf Object)
The 3D optimized structure based on simulation with triangles and mirrors for concentration shown in Figure 3b,c is weird. Too bad solar cells aren't normally made as triangles, but as rectangles or squares. Seems the simple tower type that looks like waffle cut fries may be the easiest to make though.
solar  PV  packing  packaging  2D  3D  3DPV  power  generator  green  energy  research  small  footprint  reflection  capture  structure  cube  Delicious 
december 2011 by asteroza
How 3-D Photovoltaics Could Revolutionize Solar Power - Technology Review
Hrm, 9 panel cube is roughly 4 times better than equivalent non-tracking 2D flat panel at a fixed angle. But comparing the equivalent area monolithic flat 2D fixed panel, it is only 2 times better. For reference, the original footprint using a 2D panel with tracking is 1.8 times better. So, for roughly double the installed $/KW, you can reduce your footprint by 3/4. So this works for area restricted installations. Whether the performance numbers are real for cloudy days at non-optimal angles as well as the alleged increase in peak hour ops is a concern.
solar  PV  packing  packaging  2D  3D  3DPV  power  generator  green  energy  research  small  footprint  reflection  capture  structure  cube  Delicious 
december 2011 by asteroza
[FPDI] Japanese Firm Develops 'Invisible Glass' -- Tech-On!
Interesting use of doublesided AR coatings to further suppress reflections off glass, using thin films. I wonder if this has applications in other large scale optics?
antireflective  reflection  suppression  double  sided  coating  thin  film  glass  materials  science  optics  research  technology  japan  Delicious 
november 2011 by asteroza

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