asteroza + crystal   94

Photonic Crystal Research
Doing work on using photonic crystals as TPV, trapping photons in the crystal like a mirror
photonic  crystal  optics  TPV  materials  science  research  technology  power  generator  photon  trapping  mirror 
6 weeks ago by asteroza
Graphene Spun into Meter-Long Fibers - Scientific American
So graphene oxide liquid crystals were dried out to make meters long (but imperfect) fibers which are weaker than normal carbon fiber, but have great conductivity. Has this been commercialized into low weight electrical wire yet?
graphene  oxide  liquid  crystal  fiber  manufacturing  materials  science  research  technology 
april 2019 by asteroza
Oxidation and Creep Resistant Nickel Alloy | QuesTek Innovations LLC
Allegedly the special Iconel alloy SpaceX will use in their Raptor engines, powdered so suitable for 3D printing.
single  crystal  nickel  superalloy  metallurgy  alloy  metal  3D  printing  fabbing  inconel  materials  science  research  technology  SpaceX  space  rocket  engine  raptor 
june 2018 by asteroza
Massive Dirac fermions in a ferromagnetic kagome metal | Nature
kagome lattices may allow room temperature superconductors by employing topological effects with quantum hall effects.
materials  science  research  technology  kagome  crystal  lattice  superconductor  quantum  hall  effect 
march 2018 by asteroza
[1708.09539] Coherent Atomically-Thin Superlattices with Engineered Strain
Stiching 3 molecule thick crystal lattices together. Notably, they made an LED, and could mess with the color output by stretching the thin film, which suggests a new variable color LED method.
materials  science  research  technology  thin  crystal  superlattice  lattice  LED 
march 2018 by asteroza
Tailoring crystallization phases in metallic glass nanorods via nucleus starvation | Nature Communications
Making metallic glass nanorod crystals so small they don't have a proper crystal nucleus yields interesting properties
metallic  glass  nanorod  crystal  nucleus  starvation  metal  metallurgy  materials  science  research  technology 
december 2017 by asteroza
PHAZE - colour changing paint - Purple Haze to Pinkest Pink – Culture Hustle
PHAZE is a colour changing acrylic paint set by Stuart Semple. This coating enables almost any object to be coated in a durable, ultra matte finish that changes
liquid  crystal  thermal  reactive  paint  art 
august 2017 by asteroza
Ground state structure of high-energy-density polymeric carbon monoxide
New explosive, 5-10x TNT, so 3x+ better than HMX. If it is really metastable, and not touchy as hell like octanitrocubane...
metastable  polymer  crystal  carbon  monoxide  materials  science  research  technology  explosive  military  Delicious 
april 2017 by asteroza
Photonic multilayer structure of Begonia chloroplasts enhances photosynthetic ef...
Apparently this plant has highly ordered thylakoid tower structure choloroplasts resembling a multilayer photonic crystal, thus implementing slow light techniques to capture more green and red light.
photonic  crystal  high  order  ordered  thylakoid  chloroplast  multilayer  solar  power  biology  physics  slow  light  materials  science  research  photosynthesis  structure  photochemical  propagation  capture  photochemistry  Delicious 
october 2016 by asteroza
Ambient-condition growth of high-pressure phase centrosymmetric crystalline KDP ...
They are unsure how these hex tubes are forming, conventional theory says they shouldn't occur. But, they have great properties and potentially allow the creation of much larger crystals than current KDP crystals for lasers.
self  assembling  hollow  hexagon  hexagonal  core  KDP  crystal  microcrystal  materials  science  research  technology  laser  optics  Delicious 
september 2016 by asteroza
(IUCr) Structure of a heterogeneous, glycosylated, lipid-bound, in vivo-grown pr...
So there is apparently a cockroach that births live young, and lactates to feed them. The milk they produce has a special multilayered milk protein crystal structure that acts as a time release complete food as it's processed, with integrated proteins/lipids/sugars. If this can can be reasonably synthesized, it' s a superfood (crystals have 3 times the caloric content of buffalo milk)
cockroach  milk  superfood  multilayer  protein  crystal  food  biology  materials  science  research  technology  Delicious 
july 2016 by asteroza
High hardness in the biocompatible intermetallic compound β-Ti3Au | Science Adva...
Apparently very high temperature prepared titanium gold alloy has a beta crystal type that is tremendously hard.
beta  crystal  titanium  gold  metal  alloy  high  hardness  materials  science  research  technology  Delicious 
july 2016 by asteroza
Mn3+ in Trigonal Bipyramidal Coordination: A New Blue Chromophore - Journal of t...
New stable nontoxic blue pigment, as an alternative to prussian blue. Crystal structure absorbs green/red, but reflects blue and IR. Now being made by Shepard Color.
YInMn  trigonal  bipyramidal  crystal  blue  color  pigment  materials  science  research  technology  nontoxic  Delicious 
june 2016 by asteroza
Tailoring high-temperature radiation and the resurrection of the incandescent source : Nature Nanotechnology : Nature Publishing Group
Using an IR reflector photonic crystal rather than conventional glass in a lightbulb recycles IR energy back into the filament, making efficiency equal or potentially better than current LED's.
photonic  crystal  IR  reflector  incandescent  filament  lightbulb  materials  science  research  technology  Delicious 
january 2016 by asteroza
Large isotropic negative thermal expansion above a structural quantum phase transition
Weird crystal that shrinks when it gets warmer. Trnasparent and doesn't seem to crack either, has other properties similar to electronics semiconductors.
scandium  trifluoride  crystal  negative  themal  expansion  materials  science  research  technology  Delicious 
october 2015 by asteroza
Radiative cooling of solar absorbers using a visibly transparent photonic crystal thermal blackbody
Uses the IR window reradiation trick to cool an object by cooling towards space, as space is a heatsink.
photonic  crystal  IR  radiative  cooling  surface  coating  materials  science  research  technology  solar  cell  Delicious 
september 2015 by asteroza
Innovative lithium recovery technique from seawater by using world-first dialysis with a lithium ionic superconductor
More seawater mineral mining tech from japan. This follows on the heels of uranium collection membrane tech. Good source of brine+electricity would be an open cycle OTEC exhaust...
lithiu  ionic  superconductor  crystal  membrane  electrodialysis  adsorbent  mineral  seawater  saltwater  ocean  recovery  materials  science  research  technology  production  Delicious 
june 2015 by asteroza
Dense dislocation arrays embedded in grain boundaries for high-performance bulk thermoelectrics
Squeezing a liquid metal laden alloy/crystal grain mix during sintering produces zT = 2.1 thermoelectric bulk alloys.
dislocation  array  suqeezed  crystal  grain  boundary  thermoelectric  bulk  metal  alloy  manufacturing  production  materials  science  research  technology  Delicious 
april 2015 by asteroza
Topological Acoustics
Possible use as a submarine coating to redirect sonar waves.
phononic  crystal  topological  acoustic  isolator  isolation  metamaterial  materials  science  research  technology  Delicious 
april 2015 by asteroza
Ultralow thermal conductivity and high thermoelectric figure of merit in SnSe crystals : Nature : Nature Publishing Group
So apparently, cutting the crystals along a specific axis improves ZT tremendously. So then the trick is doing a single crystal large scale growth.
tin  selenium  crystal  high  ZT  thermoelectric  materials  science  research  technology  power  generator  Delicious 
april 2014 by asteroza
How to tap the sun’s energy through heat as well as light - MIT News Office
CNT absorber fronting a photonic crystal matched to a PV cell to make a new higher performance solar thermophotovoltaic power generator.
nanphotonic  photonic  crystal  solar  thermophotovoltaic  CNT  carbon  nanotube  heat  absorber  silicon  dioxide  emitter  PV  cell  high  temperature  power  generator  green  energy  materials  science  research  technology  nanotechnology  two  layer  STPV  Delicious 
january 2014 by asteroza
Taylor & Francis Online :: Ultrastrong Mg Alloy via Nano-spaced Stacking Faults - Materials Research Letters -
Using conventional hot rolling techniques, researchers introduced nano layered stacking faults in the crystalline structure of magnesium alloy metals, increasing specific strength beyond steel by isolating crystal defects.
magnesium  technology  specific  rolled  strength  alloy  defect  crystal  fault  research  science  materials  isolation  metal  stacking  hot  high  structured  nanotechnology  Delicious 
march 2013 by asteroza
Researchers develop printable lasers - Research - University of Cambridge
Basically inkjet printing self organizing liquid crystal laser resonators, so you can basically print laser arrays on the cheap, onto flexible substrates. Applications for optical stealth clothing? See also
printed  photonic  array  self  organizing  chiral  nematic  liquid  crystal  resonant  cavity  laser  inkjet  printing  manufacturing  Delicious 
september 2012 by asteroza
Cell structure gives African fruit its iridescent hue : Nature News & Comment
Oh wow, berries with what amounts to a photonic crystal membrane structure, turning them into glitterberry mirrorballs via structural color.
natural  mirrorball  sheen  metal  iridescence  research  crystal  photonic  color  structural  technology  science  materials  biology  Delicious 
september 2012 by asteroza
High Power Explosive with Good Sensitivity: A 2:1 Cocrystal of CL-20:HMX - Crystal Growth & Design (ACS Publications)
CL-20 is a the most powerful modern explosive known, but is as unstable as PETN, making it unsuitable as is ,due to impacts causing sudden detonation. But fixing it in a cocrystal with HMX makes a hybrid that has 20% more power over pure HMX, which is the more common military explosive, while being about as stable as regular HMX.
materials  science  research  technology  explosive  explosives  CL-20  HMX  cocrystal  manufacturing  crystal  military  warhead  Delicious 
september 2012 by asteroza
NASA - OCCAMS: Optically Controlled and Corrected Active Meta-material Space Structures
Wow, using photonic muscles embedded in a deployable thin film mirror, using a raster scanning laser to tweak the mirror as an active optical correction primary aperture mirror by using the muscles to deform the mirror. But, the concept suspiciously looks similar to a stealth radar deflection cone for spysats patented by Teledyne Ryan and allegedly used on Misty 1/2 and NROL-15.
NASA  deployable  mirror  space  infrastructure  antenna  research  optics  deformable  LCE  liquid  crystal  elastomer  polymer  substrate  photonic  artificial  muscle  actuator  active  metamaterial  photo-initiated  distortion  photoactive  optically  addressable  laser  molecular  neoteric  lightweight  large  form  factor  aperture  primary  telescope  thin  film  inflatable  materials  science  technology  nanotechnology  nanoactuator  nanomuscle  Delicious 
september 2012 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
Copper hexacyanoferrate battery electrodes with long cycle life and high power : Nature Communications : Nature Publishing Group
High cycle durability cathode material, if matched with a hydrated potassium ion aqueous electrolyte. Still searching for a suitable anode though. May be suitable for grid energy storage due to ease of manufacturing and cost.
copper  hexacyanoferrate  crystalline  crystal  nanoparticle  nanocrystal  high  voltage  cathode  electrode  materials  science  research  technology  nanotechnology  energy  storage  battery  chemistry  Delicious 
december 2011 by asteroza
ABI - 株式会社アビー
apparently they have a magnet system that directly stimulates water in cells to prevent ice crystal formation when supercooling, which is then suddenly turned off to create a flash freezing effect that reduces damage to food/tissue/meat from the freezing process.
japan  ICE  crystal  free  magnetic  Water  molecule  stimulation  flash  freezing  technology  food  tissue  meat  cell  preservation  CAS  magnet  formation  suppression  colling  Delicious 
january 2011 by asteroza
Scavenging energy waste to turn water into hydrogen fuel
Direct harvesting of mechanical energy to split water for hydrogen production via nanofiber piezoelectric output coupling into water. But will it scale, and how pure does the water have to be before the fibers become matted/clogged?
PZEC  piezoelectrochemical  effect  water  splitting  splitter  nanofiber  crystal  piezoelectric  hydrogen  production  green  energy  materials  science  research  technology  nanotechnology  Delicious 
march 2010 by asteroza
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