asteroza + nanotechnology   457

Bacterial Nanobionics via 3D Printing - Nano Letters (ACS Publications)
So 3D printing aligned cynobacteria with graphene boosts spare/extra photocurrent collection 8X. In this case they painted the setup onto a mushroom as a convenient scaffold/host.
biohybrid  bionic  cynobacteria  graphene  photocurrent  collection  power  generator  materials  science  biology  research  technology  nanotechnology  nanoribbon  extracellular  electron  transport  3D  printing  fabbing  symbiosis 
november 2018 by asteroza
Strengthening effect of single-atomic-layer graphene in metal–graphene nanolayered composites | Nature Communications
Graphene/metal composites now suck less, as in wow that's a huge improvement for a very small amount of doping the parent metal
graphene  metal  composite  materials  science  research  technology  nanotechnology  copper  nickel  CVD  sandwich  multilayer 
september 2018 by asteroza
Hundred-fold enhancement in far-field radiative heat transfer over the blackbody limit | Nature
So when the gap between surfaces is 25nm, you can get much higher radiative heat transfer. But if you are that close, why not go conductive?
radiative  heat  transfer  physics  materials  science  research  technology  nanotechnology 
september 2018 by asteroza
Adaptive metalenses with simultaneous electrical control of focal length, astigmatism, and shift | Science Advances
Interesting thing film metalens manipulated by transparent polymer artificial muscle to fix focus/image shift/astigmatism simultaneously
materials  science  research  technology  artificial  eye  polymer  muscle  silicon  thin  film  metalens  optics  nanotechnology 
march 2018 by asteroza
Ultrahard carbon film from epitaxial two-layer graphene | Nature Nanotechnology
SiC coated with exactly two layers of aligned graphene can turn into diamene, a temporary state that is harder than bulk diamond, when compressed at room temperature. Sorta like those shear thickening liquid armors.
defense  military  armor  shear  thickening  hardening  diamene  graphene  silicon  carbide  materials  science  research  technology  nanotechnology 
december 2017 by asteroza
Feeding Single-Walled Carbon Nanotubes or Graphene to Silkworms for Reinforced S...
Hrm, so it didn't kill the silkworms or degrade their output too much? I thought nanotubes are the new asbestos because of cell wall interactions...
biocomposite  graphene  CNT  carbon  nanotube  silkworm  silk  fiber  production  manufacturing  compsite  materials  science  research  technology  biology  nanotechnology  Delicious 
october 2016 by asteroza
Magnetic hyperbolic optical metamaterials : Nature Communications : Nature Publishing Group
New metamaterial allows conversion of wideband IR into enhanced narrowband IR, suitable for TPV and atmospheric heat rejection to space.
magnetic  hyperbolic  dispersion  metamaterial  materials  science  research  technology  nanotechnology  lens  filter  frequency  concentrator  IR  TPV  thermophotovoltaic  converter  narrowband  emitter  Delicious 
april 2016 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
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
Synthesis of Large Area Graphene for High Performance in Flexible Optoelectronic Devices : Scientific Reports
So using the copper used in lithium ion batteries, rather than custom copper normally used for CVD graphene, they can make decent large area platelets.
graphene  production  manufacturing  materials  science  research  technology  nanotechnology  copper  substrate  Delicious 
november 2015 by asteroza
Graphene Supermarket
Not sure how legit this is, but it has a somewhat major company backing it so....
graphene  supplier  manufacturer  vendor  materials  science  research  technology  nanotechnology  Delicious 
october 2015 by asteroza
A carbon nanotube optical rectenna : Nature Nanotechnology : Nature Publishing Group
Whoa, looks like they solve the diode problem in visible light spectrum optical rectennas using a diode made up of a pointy nanotube and a non-pointy tunnel. Now to get the efficiency up...
optical  rectenna  tunnel  diode  carbon  anotube  materials  science  opticsresearch  technology  nanotechnology  semiconductor  power  generator  solar  Delicious 
september 2015 by asteroza
Highly thermally conductive and mechanically strong graphene fibers
Interesting packing approach to deal with cavities in large graphene platelets that are being rolled up into fibers.
graphene  fiber  manufacturing  production  technique  materials  science  research  technology  nanotechnology  Delicious 
september 2015 by asteroza
High-rate aluminium yolk-shell nanoparticle anode for Li-ion battery with long cycle life and ultrahigh capacity : Nature Communications : Nature Publishing Group
Interesting trick of using an alumina oxide nanoparticle, converting the outer layer to titanium oxide, and thus creating a nanoparticle anode with a squishy center that can handle expansion stress from battery cycling.
nanocomposite  nanoparticle  titanium  oxide  shell  aluminum  yolk  materials  science  research  technology  nanotechnology  high  performance  battery  anode  Delicious 
august 2015 by asteroza
Macroscale superlubricity enabled by graphene nanoscroll formation
So right now this only works with amorphous diamond surfaces, but couple this with that diamond bearing coating that was recently announced, and you might have something good here.
diamond  nanoparticle  encapsulation  nanoscroll  roll  ball  low  friciton  materials  science  research  technology  nanotechnology  graphene  Delicious 
june 2015 by asteroza
Dr.Hilonga is creating semi-customized nanoparticle based final stage water filters for water purification in rural Tanzania. His premise is that one-size-fits-all filter designs are somewhat inappropriate, and should be more tailored to the local conditions/contamination. These are not emergency filters but fixed installation home/business/school/community water purification systems, so local conditions can be determined in advance.
tanzania  nanofilter  water  purification  filter  business  materials  science  research  technology  nanotechnology  nanoparticle  tailored  customized  custom  HydrAid  biosand  Delicious 
june 2015 by asteroza
Magnetospinning of Nano- and Microfibers - Tokarev - 2015 - Advanced Materials - Wiley Online Library
Most nanofibers are electrospun, but this uses a neat magnetic trick to make nanofibers much faster and without high voltage equipment.
magnetospinning  nanofiber  polymer  ferrofluid  manufacturing  materials  science  research  technology  nanotechnology  spinning  fiber  spindle  textiles  Delicious 
may 2015 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
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