asteroza + flat   41

possible OneSpace phased array ground terminal antenna maker, a side project/startup by Greg Wyler
flat  panel  phased  array  VSAT  grount  terminal  antenna  telecommunications  satellite  communications  newspace 
march 2019 by asteroza
Highly efficient and ultra-broadband graphene oxide ultrathin lenses with three-dimensional subwavelength focusing : Nature Communications : Nature Publishing Group
Sorta breaking the diffraction limit for ultrathin flat lens in a more manufacturable format, with fresnel rings being laser etched. I wonder if this would be applicable to DARPA MOIRE project, assuming you could make a large monolithic thin film of graphene.
diffraction  limit  graphene  flat  planar  fresnel  lens  optics  materials  science  research  technology  nanotechnology  nanophotonics  thin  film  Delicious 
february 2016 by asteroza
Re-Envisioning the Telescope
Interesting way of making huge primary telescopes, using holographic sheet diffraction ratings, suitable for space telescopes. I wonder if the reverse works, shining a high power laser back out the scope to achieve a wide aperture primary.
technology  research  optics  astronomy  lens  mirror  objective  primary  telescope  grating  diffraction  sheet  holographic  flat  format  size  large  dittoscope  Delicious 
november 2012 by asteroza
Aberration-Free Ultrathin Flat Lenses and Axicons at Telecom Wavelengths Based on Plasmonic Metasurfaces - Nano Letters (ACS Publications)
New trick, using gold nanoantennas embedded in thin film silicon to turn a flat sheet into a near diffraction limited optical lens. Wide bandwidth too. Applicable for IR. Usable for large aperture beam expanders for a long range laser? But the demo seems to be a 1cm lens, and they are only seeing 1-10% efficiency.
film  thin  array  plasmonics  axicon  discontinuity  phase  planar  nanoantenna  gold  embedded  nanotechnology  technology  research  science  materials  physics  optics  metasurface  plasmonic  lens  flat  Delicious 
august 2012 by asteroza
Echo® Solar Systems by EchoFirst
Sorta hybrid solar thermal PV system, basically a flat panel PV with water cooling, driving an interior water/air or water/water heatexchanger to provide HVAC air precooling/heating and water heater boosting. Apparently not a full solar thermal AC solution
PV  solar  thermal  power  generator  flat  panel  water  cooling  heating  green  energy  Delicious 
august 2012 by asteroza
Organic Solar Concentrators — Soft Semiconductor Group
Work on using luminescent dyes to redirect solar energy to PV cells on the edge of a flat plate waveguide.
organic  solar  concentrator  PV  design  optics  flat  plate  waveguide  dye  luminescent  LSC  power  generator  green  energy  thin  film  materials  science  research  Delicious 
june 2011 by asteroza
MobileHackerz再起動日記: ドコモの定額データプランで海外端末が使えるようになった!
Something about DoCoMo flat rate plan SIM cards not being hard coded to host hardware, so essentially no carrier lock?
DoCoMo  SIM  card  lock  flat  rate  data  plan  mobile  japan  Delicious 
june 2010 by asteroza
Femtobeam LLC
Potentially interesting closed photobioreactor technology using flat emitters for the lighting with good energy coupling to the algae. Only problem is, the website screams crank/scam, even if it isn't. Maybe a link to some whitepapers or published articles would be nice...
closed  photobioreactor  bioreactor  algae  production  green  energy  flat  light  emitter  Delicious 
july 2009 by asteroza

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