Skip to main content

Home/ Advanced Concepts Team/ Group items tagged NaN

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
LeopoldS

Access : Coherent terahertz control of antiferromagnetic spin waves : Nature Photonics - 1 views

www.nature.com/...nphoton.2010.259.html

NRG PHY nan science

shared by LeopoldS on 27 Nov 10 - No Cached
  • LeopoldS on 27 Nov 10
     
    terahertz lasers controling the spin of electrons ....
santecarloni

Team:Hong Kong-CUHK/Project - 2010.igem.org - 2 views

2010.igem.org/...Project

nan BIO technology

shared by santecarloni on 26 Nov 10 - No Cached
LeopoldS liked it
  • santecarloni on 26 Nov 10
     
    impressive...
  • LeopoldS on 27 Nov 10
     
    not sure how to understand this: " Employing a specially people are denied access to obtain the information." ...
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.
Dario Izzo

World's Strangest | A Glass Bottle Will Disappear… - 4 views

www.worldsstrangest.com/...a-glass-bottle-will-disappear

NAN optics

shared by Dario Izzo on 15 Dec 09 - Cached
  • Dario Izzo on 15 Dec 09
     
    Here is a first entry for our canweuseitforspace database. Jose, apparently this invisibility cloack is not that difficult after all!!!! Watch the youtube video.....
pacome delva

Paper battery could boost energy storage - 2 views

physicsworld.com/...41267

phy nan nanoparticle carbon_nanotubes batteries

shared by pacome delva on 18 Dec 09 - Cached
  • pacome delva on 18 Dec 09
     
    watch the nice video...
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 :-) ?
Luzi Bergamin

Power scattering and absorption mediated by cloak/anti-cloak interactions: A transforma... - 1 views

arxiv.org/1001.3000

phy nan metamaterials

shared by Luzi Bergamin on 20 Jan 10 - Cached
LeopoldS liked it
  • Luzi Bergamin on 20 Jan 10
     
    To keep you updated in the field of metamaterials. "Invisible sensors" are a hot topic at the moment. Of course, mainly due to military applications. Might be interesting to sense something while minimizing the perturbations due to the sensor.
  • Dario Izzo on 20 Jan 10
     
    And all seems to be allowed by transformation optics ..... mah
LeopoldS

HP Labs' Central Nervous System for the Earth project aims to build a planetwide sensin... - 4 views

www.hpl.hp.com/...cense.html

NAN nanoengineering smart dust

shared by LeopoldS on 01 Feb 10 - Cached
  • LeopoldS on 01 Feb 10
     
    is it worth having another look at this smart dust evolution? anybody interested?
Luzi Bergamin

Compact metallo-dielectric optical antenna for ultra directional and enhanced radiative... - 3 views

arxiv.org/1003.4880

phy nan antenna

shared by Luzi Bergamin on 26 Mar 10 - Cached
LeopoldS liked it
  • Luzi Bergamin on 26 Mar 10
     
    A new paper related to our old Ariadna on microstructured radiators.
  • LeopoldS on 28 Mar 10
     
    This is actually a very nice paper in my view .... José, have a look at it!! "This study demonstrates that appropriately designed metallo-dielectric systems can serve as compact, highly directive and ultra radiative antennas. Let us emphasize that contrary to fully metallic antennas, the high directivity of this antenna does not result from a plasmonic effect, and that it is efficient over a wide range of frequencies. In consequence, the high directivity does compromise the high radiative decay rate enhancement offered by two coupled metallic particles and it is possible to exploit whispering gallery modes to further enhance the radiative decay rates. This work paves the way towards the design of compact, simple and highly efficient optical antennas."
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.
Nicholas Lan

artificial inorganic leaf (AIL) - 1 views

www.sciencedaily.com/...100325131549.htm

nrg nan bio

shared by Nicholas Lan on 29 Mar 10 - Cached
  • Nicholas Lan on 29 Mar 10
     
    bit confused about what they actually have achieved so far but sounds like it might turn out to be interesting. "The scientists first infiltrated the leaves of Anemone vitifolia -- a plant native to China -- with titanium dioxide in a two-step process. Using advanced spectroscopic techniques, the scientists were then able to confirm that the structural features in the leaf favorable for light harvesting were replicated in the new TiO2 structure. Excitingly, the AIL are eight times more active for hydrogen production than TiO2 that has not been "biotemplated" in that fashion. AILs also are more than three times as active as commercial photo-catalysts. Next, the scientists embedded nanoparticles of platinum into the leaf surface. Platinum, along with the nitrogen found naturally in the leaf, helps increase the activity of the artificial leaves by an additional factor of ten."
Nicholas Lan

self-healing of nano-structured materials following radiation damage - 2 views

www.sciencemag.org/...1631

nan radiation self-healing

shared by Nicholas Lan on 29 Mar 10 - Cached
pacome delva

Novel negative-index metamaterial bends light 'wrong' direction - 1 views

www.sciencedaily.com/...100422153939.htm

phy nan metamaterials

shared by pacome delva on 23 Apr 10 - Cached
  • the first negative index metamaterial to operate at visible frequencies
  • By engineering a metamaterial with such properties, we are opening the door to such unusual -- but potentially useful -- phenomena as superlensing (high-resolution imaging past the diffraction limit), invisibility cloaking, and the synthesis of materials index-matched to air, for potential enhancement of light collection in solar cells
  • Luzi Bergamin on 23 Apr 10
     
    I forwarded the link to my experimental colleagues and here is the comment from Sergei (the master himself:) "this is what Igor has been doing - an array of plasmonic nanocables. This basically works as a wire-medium slab. All their epsilon and mu are rubbish." * If Sergei is as strict as in this comment, then it IS rubbish. He's not one of the notorious complainer (as e.g. myself.) * Please DO NOT FORWARD this to anybody else, Sergei's comment is NOT FOR PUBLIC USE!
  • Luzi Bergamin on 23 Apr 10
     
    UPDATE: I had a short chat with Sergei and Pekka, Sergei noticed that there is an increasing number of papers on metamaterials, especially in Nature and Science, which are simply wrong, this one being an example. * The idea is based on a very well known effect of wired media. What appears to be interesting about this paper is that they manage to make an optical analogue with aparently low losses. This could be interesting. * The whole interpretation as NIM, "wrong" refraction etc. is total nonsense.
  • pacome delva on 23 Apr 10
     
    wow, good to know ! But for the privacy you should be aware that this is a public group, so anyone has access to our comments i think !
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...
LeopoldS

High-Flux Solar-Driven Thermochemical Dissociation of CO2 and H2O Using Nonstoichiometr... - 1 views

www.sciencemag.org/...1797

NRG nan

shared by LeopoldS on 05 Jan 11 - No Cached
  • LeopoldS on 05 Jan 11
     
    very nice .... looks really promising!
  • duncan barker on 06 Jan 11
     
    "solar cavity-receiver reactor" .... nice!!! I'm going to build one!
LeopoldS

NASA - An Answer to Green Energy Could Be in the Air - 1 views

www.nasa.gov/...capturingwind.html

nan technology NRG

shared by LeopoldS on 22 Dec 10 - No Cached
  • LeopoldS on 22 Dec 10
     
    Tiago rules ...
‹ Previous 21 - 40 of 188 Next › Last »
Showing 20▼ items per page