Skip to main content

Home/ Advanced Concepts Team/ Group items tagged nanotubes

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
santecarloni

Nanotube bundles could boost solar cells - physicsworld.com - 0 views

physicsworld.com/...48311

Space technology

shared by santecarloni on 20 Jan 12 - No Cached
  • santecarloni on 20 Jan 12
     
    Thin-film solar cells could be made far more efficient with the addition of bundles of carbon nanotubes.
  • LeopoldS on 20 Jan 12
     
    Lionel could you have a closer look at this one?
Juxi Leitner

Honda Improves Process for Making Nanotubes - Reviews by PC Magazine - 0 views

www.pcmag.com/...0,2817,2353656,00.asp

technology phy nanotubes NRG

shared by Juxi Leitner on 08 Oct 09 - Cached
  • Honda Research Institute USA plans to publish results of new research on Friday that shows that the company has improved the success rate of growing carbon nanotubes with metallic properties, a key to using them in future power devices.
ESA ACT

Nanotube Phonon Waveguide - 0 views

scitation.aip.org/...GetabsServlet

NaN technology Thermal_Control

shared by ESA ACT on 24 Apr 09 - No Cached
  • ESA ACT on 24 Apr 09
     
    We find that the high thermal conductivity of carbon nanotubes remains intact under severe structural deformations while the corresponding electrical resistance and thermoelectric power show compromised responses. Similar robust thermal transport against
Thijs Versloot

Carbon nanotubes grow in combustion flames - 0 views

www.itbm.nagoya-u.ac.jp/...-grow-in-combustion-flames.php

CNT nano

shared by Thijs Versloot on 02 Apr 14 - No Cached
  • Thijs Versloot on 02 Apr 14
     
    Quantum chemical simulations reveal an unprecedented relationship between the mechanism of carbon nanotube growth and hydrocarbon combustion processes. Results of these simulations illustrate the importance in the role of carbon chemical bonding and molecular transformations in CNT growth.
Tom Gheysens

Biomimicr-E: Nature-Inspired Energy Systems | AAAS - 4 views

www.aaaspolicyfellowships.org/...nature-inspired-energy-systems

energy science phy space

shared by Tom Gheysens on 13 Jan 14 - No Cached
  • Tom Gheysens on 13 Jan 14
     
    some biomimicry used in energy systems... maybe it sparks some ideas
  • LeopoldS on 27 Jan 14
     
    not much new that has not been shared here before ... BUT: we have done relativley little on any of them. for good reasons?? don't know - maybe time to look into some of these again more closely Energy Efficiency( Termite mounds inspired regulated airflow for temperature control of large structures, preventing wasteful air conditioning and saving 10% energy.[1] Whale fins shapes informed the design of new-age wind turbine blades, with bumps/tubercles reducing drag by 30% and boosting power by 20%.[2][3][4] Stingray motion has motivated studies on this type of low-effort flapping glide, which takes advantage of the leading edge vortex, for new-age underwater robots and submarines.[5][6] Studies of microstructures found on shark skin that decrease drag and prevent accumulation of algae, barnacles, and mussels attached to their body have led to "anti-biofouling" technologies meant to address the 15% of marine vessel fuel use due to drag.[7][8][9][10] Energy Generation( Passive heliotropism exhibited by sunflowers has inspired research on a liquid crystalline elastomer and carbon nanotube system that improves the efficiency of solar panels by 10%, without using GPS and active repositioning panels to track the sun.[11][12][13] Mimicking the fluid dynamics principles utilized by schools of fish could help to optimize the arrangement of individual wind turbines in wind farms.[14] The nanoscale anti-reflection structures found on certain butterfly wings has led to a model to effectively harness solar energy.[15][16][17] Energy Storage( Inspired by the sunlight-to-energy conversion in plants, researchers are utilizing a protein in spinach to create a sort of photovoltaic cell that generates hydrogen from water (i.e. hydrogen fuel cell).[18][19] Utilizing a property of genetically-engineered viruses, specifically their ability to recognize and bind to certain materials (carbon nanotubes in this case), researchers have developed virus-based "scaffolds" that
pacome delva

Better Nanotubes May Be on the Way -- Fox 2009 (1210): 3 -- ScienceNOW - 1 views

sciencenow.sciencemag.org/...3

phy nan carbon_nanotubes

shared by pacome delva on 14 Dec 09 - Cached
  • Success at building large amounts of inexpensive nanotubes opens the door for lighter, faster car frames; affordable space vehicles; and ultralightweight armor. Or on a smaller level, BNNTs could be used with pinpoint precision to attack cancer cells by sticking to tumors, absorbing neutrons from a targeted beam, and generating localized alpha radiation to kill the cancer. "This is the start of a revolution in materials," says Dennis Bushnell, a NASA engineer who has watched the work closely in the hopes of using BNNTs for space vehicles.
ESA ACT

Carbon nanotubes causing asbestos-like effects in lab mice - Engadget - 0 views

www.engadget.com/...estos-like-effects-in-lab-mice

nanotechnology biology environment health

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    any new findings in there?
ESA ACT

Cellulose Nanopaper Structures of High Toughness - 0 views

pubs.acs.org/...bm800038n.html

NAN BIO materials bng

shared by ESA ACT on 24 Apr 09 - No Cached
  • ESA ACT on 24 Apr 09
     
    The end of the Carbon Nanotubes.
ESA ACT

Technology Review: Cheaper Fuel Cells - 0 views

www.technologyreview.com/...22074

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    Carbon nanotubes could replace expensive platinum catalysts and help finally make fuel cells economical
dejanpetkow

Torsional Carbon Nanotube Artificial Muscles - 0 views

www.sciencemag.org/...science.1211220

BIO NAN carbon muscles

shared by dejanpetkow on 18 Oct 11 - No Cached
  • Actuator materials producing rotation are rare and demonstrated rotations are small, though rotary systems like electric motors, pumps, turbines and compressors are widely needed and utilized. Present motors can be rather complex and, therefore, difficult to miniaturize. We show that a short electrolyte-filled twist spun carbon nanotube yarn, which is much thinner than a human hair, functions as a torsional artificial muscle in a simple three-electrode electrochemical system, providing a reversible 15,000° rotation and 590 revolutions/minute. A hydrostatic actuation mechanism, like for nature’s muscular hydrostats, explains the simultaneous occurrence of lengthwise contraction and torsional rotation during the yarn volume increase caused by electrochemical double-layer charge injection. Use of a torsional yarn muscle as a mixer for a fluidic chip is demonstrated.
  • dejanpetkow on 18 Oct 11
     
    I have no access to the pdf, but abstract sounds interesting.
LeopoldS

Giant osmotic energy conversion measured in a single transmembrane boron nitride nanotu... - 2 views

www.nature.com/...nature11876.html

energy conversion

shared by LeopoldS on 19 Mar 13 - No Cached
  • LeopoldS on 19 Mar 13
     
    interesting power source ...
Luzi Bergamin

Carbon nanotube computer - 0 views

www.nature.com/...nature12502.html

INF nanotechnology

shared by Luzi Bergamin on 26 Sep 13 - No Cached
LeopoldS liked it
pacome delva

Stones from Sticks | Physical Review Focus - 1 views

focus.aps.org/st13

nan phy nanodiamond

shared by pacome delva on 07 Oct 09 - Cached
  • to make nanoscale diamond crystals, researchers have used their own tricks, including recipes involving carbon nanotubes.
  • nanodiamonds could be used as hard protective coatings in small scale systems or sensors.
pacome delva

A Battery Made With Paper - 0 views

sciencenow.sciencemag.org/...2

phy nrg nan carbon_nanotubes batteries

shared by pacome delva on 09 Dec 09 - Cached
LeopoldS liked it
  • Researchers are reporting that they've made batteries and other energy-storage devices by printing layers of carbon nanotube–based ink atop standard photocopy paper. The result is a highly conductive sheet that can carry a charge and be easily incorporated into a flexible battery. Because of paper's low cost, that could help lower the price of batteries used in electric vehicles, wind farms, and other renewable sources.
  • LeopoldS on 13 Dec 09
     
    can we use it for space :-) ?
pacome delva

Enter the 'thermopower wave' - 0 views

physicsworld.com/...41978

carbon_nanotubes nan power_sources nrg

shared by pacome delva on 16 Mar 10 - Cached
  • Researchers in the US and Korea have discovered that igniting a carbon nanotube, coated in chemically flammable material, can trigger a high-speed wave to race along the tube at 10,000× the speed of the spreading chemical reaction. The new phenomenon, dubbed a "thermopower wave", could lead to a new way of generating electricity and may enable micro power sources to drive nanoscale devices.
pacome delva

Nanotube 'fuzz' boosts optical performance - 0 views

physicsworld.com/...42486

phy nan gold plasmonics metamaterials

shared by pacome delva on 29 Apr 10 - Cached
LeopoldS liked it
  • This structure is called a "plasmonic metamaterial" because its optical properties involve surface plasmons.
  • pacome delva on 29 Apr 10
     
    Again some plasmonic metamaterial...
ESA ACT

Experimental Observation of an Extremely Dark Material Made By a Low-Density Nanotube A... - 0 views

pubs.acs.org/...nl072369t.html

NAN optics technology

shared by ESA ACT on 24 Apr 09 - No Cached
  • ESA ACT on 24 Apr 09
     
    The integrated total reflectance from carbonnanotube arrays is three times lower than the lowest-ever reported values of optical reflectance from any material, making it the darkest man-made material ever.
ESA ACT

Carbon Nanotube Arrays with Strong Shear Binding-On and Easy Normal Lifting-Off -- Qu e... - 0 views

www.sciencemag.org/...238

NAN nanotechnology BIO biomimicry

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    looks like a big step forward ... any comments Tobias? - LS +++ surely is a huge technological success. didn't look into details yet - TSe
1 - 20 of 26 Next ›
Showing 20▼ items per page