asteroza + nanotube   135

Phys. Rev. B 83, 233404 (2011) - Polarized light emission from individual incandescent carbon nanotubes
10x more intense output from a wire radiator if the wire is shorter than the wavelength, polarize in a specific direction
nanotube  nanowire  wire  radiator  heat  rejection  materials  science  research  technology 
may 2019 by asteroza
NASA Awards Contract for Continued Development of Carbon Nanotube Tech | NASA
Covers Miralon demos for

- Miralon as a heat shield for space, aircraft and automotive applications
- Miralon heated furniture and fixtures
- Miralon yarn as a wire for lighting
Miralon  heatshield  wire  CNT  yarn  tape  materials  science  research  technology  NASA  carbon  nanotube 
october 2018 by asteroza
Large-scale polymeric carbon nanotube membranes with sub–1.27-nm pores | Science Advances
Mattershift is apparently building programmable matter separation filters/membranes using CNT tubes mounted as an array of through tubes/pillars on a polymer membrane.
CNT  carbon  nanotube  membrane  programmable  filter  separation  materials  science  research  technology 
march 2018 by asteroza
Harvesting electrical energy from carbon nanotube yarn twist | Science
twisted nanotube yarn submerged in an electrolyte operates like a variable area supercapacitor, usable as an energy harvestor
twistiron  carbon  nanotube  CNT  yarn  power  generator  kinetic  energy  harvestor  scavenger  harvesting  scavenging  supercapacitor  fiber  stretching 
august 2017 by asteroza
Carbon nanotube manufacturer & product development services, US based
Making a Vantablack alternative called Singularity Black, and planning on opening up the recipe. Will also coat something for you if you send it in. Unfortunately ITAR restricted...
vertically  aligned  nanotube  array  Vantablack  black  color  materials  science  research  technology 
august 2017 by asteroza
Velcro®-Inspired SiC Fuzzy Fibers for Aerospace Applications - ACS Applied Mater...
Coating silicon carbide fibers with fuzzy silicon carbide nanotubes/nanowire like a velco surface of fuzzy fibers improves composite ceramic performance in high heat applications.
silicon  carbide  nanotube  nanofiber  reinforced  composite  ceramic  materials  science  research  technology  velcro  surface  treatment  fiber  fuzzy  Delicious 
march 2017 by asteroza
Observation of extreme phase transition temperatures of water confined inside is...
Not conclusively "ice", but it appears water is solid inside CNT's at room temperatures. Which might allow "water wires" with high conductivity. But they aren't quite sure how the water gets inside the nanotube in the first place...
CNT  carbon  nanotube  encapsulated  water  materials  science  research  technologgy  wire  high  conductivity  Delicious 
november 2016 by asteroza
A carbon nanotube optical rectenna : Nature Nanotechnology : Nature Research
New demo of optical rectennas, pushing antenna into diode, functioning as a petahertz recitifier
CNT  carbon  nanotube  diode  optical  rectenna  physics  materials  science  research  technology  power  generator  solar  Delicious 
november 2016 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
FastCAP Systems | Ultracapacitor and CNT Technologies
New high performance ultracaps that work well at a broad temperature range, this startup is a MIT spinout.
CNT  arbon  nanotube  ultracapacitor  energy  storage  materials  science  research  MIT  Delicious 
september 2016 by asteroza
Influence of Polymer Electronics on Selective Dispersion of Single-Walled Carbon...
New polymer allows dispersing metallic nanotubes, leaving behind only the semiconducting nanotubes. Might be key to increasing production of nanotubes due to ease of separation.
semiconducting  metallic  carbon  nanotube  CNT  SWNT  filter  separation  polymer  chemical  manufacturing  materials  science  research  technology  Delicious 
august 2016 by asteroza
Researchers assess power plants that convert all of their CO2 emissions into car...
I wonder if some bright spark in china could run with this and their soft coal powerplants which already power bitcoin mining datacenters...
molten  lithium  carbonate  electrolysis  carbon  nanotube  CNT  production  CO2  CCS  CCGT  materials  science  manufacturing  research  technology  Delicious 
june 2016 by asteroza
Thermodynamic assessment of CO2 to carbon nanofiber transformation for carbon se...
Oh wow, at the current prices for CNT's, you might be able to recover the profit lost on electricity production in a combined cycle powerplant with CCS installed by manufacturing carbon nanotubes from the captured CO2.
CO2  carbon  capture  CCS  molten  lithium  carbonate  electrolysis  nanotube  CNT  production  manufacturing  research  technology  Delicious 
june 2016 by asteroza
The Great Reduction of a Carbon Nanotube’s Mechanical Performance by a Few Topol...
Single atom displacement drops carbon nanotubes to 40GPa, multiple defects make it much worse. So unless you have a perfect set of tubes/fibers, there will be no earth space elevator using CNT's.
carbon  nanotube  CNT  strength  research  technology  topological  defect  space  elevator  Delicious 
june 2016 by asteroza
[1504.06751] Silk reinforced with graphene or carbon nanotubes spun by spiders
Uh, so having spiders swim in graphene/nanotube laced water makes them produce super silk. This may not end well...
graphene  carbon  nanotube  reinforced  spider  silk  biomaterial  materials  science  research  technology  Delicious 
may 2015 by asteroza
Macroscopic Nanotube Fibers Spun from Single-Walled Carbon Nanotube Polyelectrolytes - ACS Nano (ACS Publications)
doped nanotubes in solution align similar to liquid crystal display, this can be used to make a gel that when forced through a needle creates macro scale fibers of nanotubes.
macro  macroscopic  nanotube  fiber  production  SWNT  CNT  carbon  SWCNT  materials  science  manufacturing  research  nanotechnology  technology  polyelectrolyte  gel  Delicious 
september 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
Bulletproof Suit - Garrison Bespoke
Nice idea, but it seems to be a bulletproof fabric suit. Unless it's a 3 piece suit with a snazzy vest that doubles as a plate carrier, or is lined with DragonSkin platelets, life is going to suck when you get hit.
bulletproof  defense  carbon  dress  suit  nanotube  fabric  Delicious 
november 2013 by asteroza
InSolution » Stronger than Kevlar, light as a tee-shirt, and cheap all over
Improving polymer fibers (polyvinyl alcohol chains) by mixing in a few nanotube segments or larger nanochips, which cause the otherwise poorly ordered polymer chains in the polymer fiber to slide and align with the nanotube, making a more uniform and stronger fiber at substantially lower cost, while keeping their flexibility.
alignment  technology  polymer  polyvinyl  lubrication  strand  PVA  fiber  research  composite  science  materials  chain  alcohol  nanotube  nanochip  nanotechnology  SWNT  Delicious 
february 2013 by asteroza
Cement nanotubes as a natural means for reinforcing concrete
Interesting. Does this imply using nanotubes of cement within cement pastes could eliminate the need for separate steel reinforcement (and potentially eliminate the reinforcement creation/placement stage in construction?)
portlandite  cement  nanotube  materials  science  research  technology  nanotechnology  inorganic  chemistry  Delicious 
june 2012 by asteroza
Zyvex Technologies
Arovex carbon nanotube infused fiber composites now commercially available for structural use, seen here mostly for boats, which have a nice history of large scale composite material usage.
Arovex  carbon  nanotube  fiber  materials  science  research  technology  nanotechnology  composite  Delicious 
april 2012 by asteroza
A Photo-Thermal-Electrical Converter Based On Carbon Nanotubes for Bioelectronic Applications - Miyako - 2011 - Angewandte Chemie International Edition - Wiley Online Library
Interesting biocompatible power transfer research for implantable electronics, since it uses lasers that can pass through living tissue. Only issue is inherent to the process; namely, you are using a medium to convert tissue penetrating laser light to heat, then using a conventional thermoelectric generator embedded in the medium to generate power internally, which means you have a non-trivial amount of waste heat to reject through body tissue and fluids. As an alternative to skin penetration for power transfer this is nice, and it is not sensitive to EMF interference like induction pads, but induction pads are more efficient probably and generate less heat internally. This might be a good application for sensors, but may not be ideal for larger devices like assist pumps or pacemakers.
photothermoelectric  thermoelectric  biocompatible  implantable  power  generator  health  medicine  materials  science  research  technology  nanotechnology  laser  receiver  substrate  heat  transfer  CNT  nanotube  hardware  electronics  devices  sensor  Delicious 
december 2011 by asteroza
Three Dimensional Carbon-Nanotube Polymers - ACS Nano (ACS Publications)
If the progression is from individual tubes to aligned tubes (anisotropic), could something similar be done with buckyballs to make a porous solid, like some 3D honeycomb sponge (isotropic)?
3D  nanotube  polymer  materials  science  research  technology  nanotechnology  computational  chemistry  prediction  simulation  Delicious 
december 2011 by asteroza
NASA - NASA Develops Super-Black Material That Absorbs Light Across Multiple Wavelength Bands
So this might be useful for solar concentrator absorbers and space radiators (up to 750C in air maybe, up to 2800C in a vacuum), but maybe not so good for other applications.
carbon  nanotube  black  broadband  absorber  surface  coating  materials  science  research  technology  nanotechnology  optics  Delicious 
november 2011 by asteroza
Research update: New way to store sun’s heat - MIT News Office
Rechargeable solar fuel of sorts? How fast are the kinetics on this? Energy density is something similar to Li-ion batteries so this isn't explosive levels of energy...
azobenzene  functionalized  carbon  nanotube  CNT  solar  synfuel  synthetic  fuel  heat  rechargeable  source  energy  storage  reversible  materials  science  research  technology  nanotechnology  Delicious 
july 2011 by asteroza
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