asteroza + nanostructure   84

Phys. Rev. B 96, 165431 (2017) - Dynamically tunable extraordinary light absorption in monolayer graphene
stamping graphene into an optical well surface to up light absorption, possibly dynamically tunable wavelength absorption by changing optical well shape/size
optics  materials  science  research  technology  graphene  stamp  stamping  microstamping  nanostamping  nanostructure  light  absorber 
january 2018 by asteroza
MesoGlue | Room Temperature Metallic Glue
Weird glue that uses nanorod alignment and other tricks for metal-on-metal joining
MesoGlue  metal  joining  metallic  indium  gallium  nanorod  glue  conductive  materials  science  research  technology  nanotechnology  bond  nanostructure  Delicious 
january 2016 by asteroza
Monolithic graded-refractive-index glass-based antireflective coatings: broadband/omnidirectional light harvesting and self-cleaning characteristics - Journal of Materials Chemistry C (RSC Publishing)
So, new surface coating technique that uses nanostructures to achieve a superhydrophobic effect, rather than polymer or powder surface coating, that is also much more abrasion resistant. Also conveniently antireflective.
materials  scienceresearch  technology  nanotechnology  nanostructure  superhydrophobic  hydrophobic  surface  coating  microstructure  antireflective  Delicious 
may 2015 by asteroza
Enhanced photovoltaics inspired by the fovea centralis : Scientific Reports : Nature Publishing Group
Interesting nanostructure research to improve solar cell efficiency by improving light capture. The takeaway is that straight right cylinder nanowires actually perform worse than nanowires with uneven shapes, one extreme being a nanofunnel (wouldn't this be more like a cone or frustrum though?)
silicon  nanofunnel  microfunnel  funnel  structure  nanostructure  surface  plasmon  light  trap  solar  cell  materials  science  physics  research  technology  nanotechnology  nanowire  Delicious 
february 2015 by asteroza
Research of Graphene-reinforced Aluminum Matrix Nanocomposites
Seems like if the powder grind/mix is well done, you get pretty awesome graphene nanoflake reinforced aluminum composites. Apparently they got over a previous issue, where CNT's in an aluminum matrix turned into aluminum carbide, lowering materials properties.
graphene  nanoflake  flake  aluminum  metal  matrix  composite  nanostructure  nanocomposite  materials  science  research  technology  nanotechnology  ball  milling  powder  metallurgy  Delicious 
june 2014 by asteroza
DisruptiveMaterials | Materials that matter
New high surface area carbonate that beats zeolites and seems easy to make. Also very good as a desiccant.
upsalite  magnesium  carbonate  surface  technology  nanostructure  hygroscopic  research  science  desiccant  area  materials  porous  high  nanoporous  microporous  pore  nanotechnology  sponge  Delicious 
august 2013 by asteroza
A regenerable oxide-based H2S adsorbent with nanofibrous morphology : Nature Nanotechnology : Nature Publishing Group
Possible new absorbent that might allow sulfur removal from natural gas or coal/biomass derived syngas without a cooling/liquid step (which normally complicates the process and introduces energy inefficiencies). This would make coal or biomass based syngas much more appealing, especially for advanced syngas combustion cycles that allow for easier carbon capture.
removal  sulphur  sulfer  biogas  syngas  nanotechnology  technology  research  science  materials  fiber  nanostructure  area  surface  reactivity  high  filtering  cleaning  processing  gas  sorbent  mat  nanofiber  oxide  titanium  zinc  adsorbent  H2S  sulfide  hydrogen  Delicious 
december 2012 by asteroza
High-performance bulk thermoelectrics with all-scale hierarchical architectures : Nature : Nature Publishing Group
New lead telluride material with a ZT of 2.2 for a deltaT around 600K at a 677C/77C hot/cold split. Makes thermoelectrics borderline practical for hot engine applications.
lead  telluride  PbTe  materials  science  research  technology  nanotechnology  nanostructure  structure  lattice  thermal  conductivity  control  high  ZT  thermoelectric  power  generator  waste  heat  energy  recovery  green  CHP  Delicious 
september 2012 by asteroza
A Super-Absorbent Solar Material - Technology Review
Interesting work since it isn't polarization dependent, unlike that loss medium research which seemed to need some phase canceling effects to work right.
thin  film  plasmonic  broadband  absorber  optical  resonance  materials  science  optics  research  technology  nanostructure  wedge  pattern  nanotechnology  Delicious 
november 2011 by asteroza
Brennan Research Group
Using diamond shaped pyramid nanostructure surface patterns, one can inhibit bacterial growth. applications include medical item sterility, and ship antifouling coatings.
Gator  Sharkote  ship  hull  antifouling  Sharklet  diamond  pyramid  nanostructure  nanopattern  surface  treatment  coating  antibacterial  health  medicine  Delicious 
september 2011 by asteroza
Self-Cleaning Anodes: Researchers Develop Nanoparticle Technology That Could Facilitate Cost-Effective Coal-Powered Fuel Cells « Georgia Tech Research News
Barium oxide nanostructure anode coating keeps SOFC clear of coking deposits when using coal gas, operate at 750C for less expensive materials usage. Coal gas poisoning issues not explored.
SOFC  fuelcell  materials  science  reearch  anode  coking  surface  treatment  barium  oxide  nanostructure  nanotechnology  self-cleaning  cleaning  water  mediated  carbon  removal  coal  gas  syngas  vapor  deposition  Delicious 
june 2011 by asteroza
.:. Hyper Solar .:.
I think they are basically trying to sell a thin film prismatic lens array with spectrum waveguiding as an aftermarket upgrade to existing solar PV systems. Wait, now they are doing photoelectrochemical hydrogen production with the intent of synthetic natural gas production? Seems they are close to the magical 1.23V open circuit voltage needed for direct solar hydrogen production.
thin  film  optical  solar  concentrator  lens  array  CSP  CPV  addon  hardware  green  energy  PV  photonic  light  routing  separation  photoelectrochemical  nanostructure  artificial  photosynthesis  hydrogen  synthetic  fuel  methane  gas  production  materials  science  research  technology  nanotechnology  direct  high  voltage  cell  STG  Delicious 
february 2011 by asteroza
Adding Graphene Makes Polymers 31-53% Stronger Versus Carbon Nanotubes 3-20% Enhancement
This makes sense in a way, having sheets of nanoscale stuff, particularly aligned with the expected stresses. It's similar to the difference between a chopped fiber fiberglass structure, and a deliberately laid woven fiberglass mat structure. I imagine using full sheets of graphene aligned with stresses, rather than just broken up platelets, will see a huge performance boost. But, like chopped fiberglass, this is simpler to mass produce (at least until roll to roll graphene manufacturing comes of age)
graphene  platelet  nanocomposite  materials  science  research  technology  nanotechnology  nanostructure  polymer  epoxy  Delicious 
april 2010 by asteroza
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