asteroza + selective   30

Scalable-manufactured randomized glass-polymer hybrid metamaterial for daytime r...
Yet another IR narrowband emitter/frequency converter that rejects to space, but interesting method...
selective  IR  emitter  research  technology  metamaterial  materials  science  narrowband  frequency  converter  TPX 
march 2017 by asteroza
Near-infrared–to–visible highly selective thermal emitters based on an intrinsic...
New work on using nanorods for a wide frequency converter, to effectively change a solar cell's efficiency by converting waste spectrum into usable spectrum
photonic  resonance  nanorod  frequency  converter  IR  visible  materials  science  research  technology  selective  emitter  Delicious 
january 2017 by asteroza
Steam generation under one sun enabled by a floating structure with thermal conc...
Weird hybrid of a thermal concentrating foam, an IR transparent selective absorber cover, and clear bubble wrap cover to prevent heat leakage above the cover.
steam  generator  thermal  foam  bubble  wrap  concentration  solar  selective  absorber  Delicious 
august 2016 by asteroza
Defining a performance map of porous carbon sorbents for high-pressure carbon di...
How best to tweak carbon filters for "sweetening" natural gas by removing CO2 from the feed. Though sour gas has other stuff like sulpher that is a different issue...
selective  carbon  sorbent  adsorber  CO2  materials  science  research  technology  gas  filtration  filter  Delicious 
august 2016 by asteroza
Affordable Metal 3D Printing – New Selective Inhibition Sintering (SIS) Process May Be Groundbreaking
Reverse of SLS, SIS is basically tracing outlines of objects with sintering inhibitor, then baking the whole print bay. From the guys behind concrete contour printing.
3D  priinter  fabbing  manufacturing  technique  research  technology  SIS  selective  inhibition  sintering  metal  Delicious 
january 2015 by asteroza
Passive radiative cooling below ambient air temperature under direct sunlight : Nature : Nature Publishing Group
Interesting mixed material which re-emits heat at atmospheric IR transparency windows, effectively becoming a passive cooler. So an external radiator on earth covered with this paint can get pretty cool.
photonic  radiative  cooling  solar  radiator  mirror  selective  thermal  emitter  materials  science  research  technology  passive  hafnium  silicon  dioxide  tuned  cooler  nanoparticle  layer  IR  infrared  transparency  window  atmospheric  green  paint  surface  treatment  Delicious 
december 2014 by asteroza
Swellable, Water- and Acid-Tolerant Polymer Sponges for Chemoselective Carbon Dioxide Capture - Journal of the American Chemical Society (ACS Publications)
Interesting CO2 sponge that uses a physical swelling mechanism in it's pores to capture CO2 at high pressure while rejecting water, but releases at low pressure. So sorta pressure swing style adsorbent?
CO2  carbon  capture  polymer  sponge  high  pressure  materials  science  research  technology  organic  hydrophobic  swelling  expansion  selective  gas  adsorbent  Delicious 
august 2014 by asteroza
UConn Professor’s Patented Technique Key to New Solar Power Technology | UConn Today
Optical rectennas still need terahertz switching gear to be practical, but this is a good step toward advanced solar power using more wavelengths.
optical  rectenna  technology  selective  nanorectenna  layer  fabrication  solar  research  antenna  production  atomic  science  area  materials  deposition  generator  power  nanotechnology  Delicious 
february 2013 by asteroza
Nanoscale Research Letters | Full text | Tailoring photonic metamaterial resonances for thermal radiation
This seems to use the same kind of tricks as those luminescent solar concentrator plates, that internally reflect captured light and convert the frequency internally to retransmit to edge PV modules. Just shifting down to IR. The interesting bit is the prevention of reradiation through the top surface, which provides the potential for solar thermal power generation without concentrating mirrors using not well aligned surfaces of panels manufactured using chip fabrication techniques.
TPV  selective  absorber  photonic  metamaterial  resonance  crystal  thermal  emission  radiation  reradiation  solar  IR  concentrating  thermophotovoltaic  materials  science  research  technology  nanotechnology  optics  Delicious 
december 2011 by asteroza

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