Group items tagged carbon - Advanced Concepts Team

Space capsule probed for asteroid dust : Nature News - 1 views

www.nature.com/...466016a.html

asteroid MAD

shared by Joris _ on 30 Jun 10 - No Cached

They have clearly shown us the path forward to the inevitable large-scale exploration of the near-Earth asteroid population
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Interest in asteroid missions has also been on the rise in the United States. In June, US President Barack Obama called for a manned trip to an asteroid. And late last year, the OSIRIS-REx project, also a sample-return mission targeting a carbon-rich asteroid, was selected as a finalist in NASA's New Frontiers Program,
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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.
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nanodiamonds could be used as hard protective coatings in small scale systems or sensors.
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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.
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LeopoldS on 13 Dec 09

can we use it for space :-) ?

<div class="cArrow"> </div><div class="cContentInner">can we use it for space :-) ?</div>

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China To Spend CNY1 Billion To Protect Rural Environment - ChinaCSR.com - Corporate Soc... - 1 views

www.chinacsr.com/...n-to-protect-rural-environment

water environment china policy carbon

shared by LeopoldS on 07 Dec 09 - Cached

LeopoldS on 07 Dec 09

interesting initiative - also with respect to "space and water" a theme we should explore a bit better in my view ...

<div class="cArrow"> </div><div class="cContentInner">interesting initiative - also with respect to "space and water" a theme we should explore a bit better in my view ...</div>

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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.
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Ocean Geoengineering Scheme May Prove Lethal : Discovery News - 1 views

news.discovery.com/...questration-phytoplankton.html

geoengineering bio

shared by Joris _ on 22 Mar 10 - Cached

Macroscopic invisibility cloaking of visible light : Nature Communications : Nature Pub... - 3 views

www.nature.com/...ncomms1176.html

invisibility PHY science

shared by LeopoldS on 02 Feb 11 - No Cached

LeopoldS on 02 Feb 11

and all this without magic metamaterials ...

<div class="cArrow"> </div><div class="cContentInner">and all this without magic metamaterials ...</div>

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...1 more comment...
Luzi Bergamin on 02 Feb 11

Wellwellwell! I don't know how I have to complain, since I could not yet read the full article, but I'm sure I will :-).

<div class="cArrow"> </div><div class="cContentInner">Wellwellwell! I don't know how I have to complain, since I could not yet read the full article, but I'm sure I will :-).</div>

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Luzi Bergamin on 02 Feb 11

It's funny to see how people get more and more humble in the desperate attempt to save their stupid ideas... At the beginning was the brave and bold aim to cloak something in free space (in a sphere or a cylinder). This requires inhomogeneous, anisotropic, magnetic materials; hopeless!! So one reduces to one polarization, now we have inhomogenous, anisotropic materials; still hopeless! At this point one downgraded the pretension: instead of cloaking in free space, we make a "carpet cloak" and hide an object behind an invisible dent in a mirror. But if that shall be continuous, we still need inhomogeneity and this is very hard. So now instead of a dent we take a cone and then it is claimed to work ... for ONE polarization. But of course the cloak can't work at all incident angles... irony of fate: everything is now made from birefringent media, the antithesis of what the metamaterials dogma was at the beginning!

<div class="cArrow"> </div><div class="cContentInner">It's funny to see how people get more and more humble in the desperate attempt to save their stupid ideas... At the beginning was the brave and bold aim to cloak something in free space (in a sphere or a cylinder). This requires inhomogeneous, anisotropic, magnetic materials; hopeless!! So one reduces to one polarization, now we have inhomogenous, anisotropic materials; still hopeless! At this point one downgraded the pretension: instead of cloaking in free space, we make a "carpet cloak" and hide an object behind an invisible dent in a mirror. But if that shall be continuous, we still need inhomogeneity and this is very hard. So now instead of a dent we take a cone and then it is claimed to work ... for ONE polarization. But of course the cloak can't work at all incident angles... irony of fate: everything is now made from birefringent media, the antithesis of what the metamaterials dogma was at the beginning!</div>

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jmlloren on 04 Feb 11

Hi Luzi, can you please send me the paper. We are writing a project based on sulfates and carbonates, and all this BS sounds great for the introduction (The authors used Calcite as birefringent material)

<div class="cArrow"> </div><div class="cContentInner">Hi Luzi, can you please send me the paper. We are writing a project based on sulfates and carbonates, and all this BS sounds great for the introduction (The authors used Calcite as birefringent material)</div>

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Wind Power Without the Blades: Big Pics : Discovery News - 4 views

news.discovery.com/...-power-without-the-blades.html

NRG wind energy biomimicry

shared by Luís F. Simões on 19 Sep 11 - No Cached

The carbon-fiber stalks, reinforced with resin, are about a foot wide at the base tapering to about 2 inches at the top. Each stalk will contain alternating layers of electrodes and ceramic discs made from piezoelectric material, which generates a current when put under pressure. In the case of the stalks, the discs will compress as they sway in the wind, creating a charge.
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Based on rough estimates, said Núñez-Ameni the output would be comparable to that of a conventional wind farm covering the same area
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After completion, a Windstalk should be able to produce as much electricity as a single wind turbine, with the advantage that output could be increased with a denser array of stalks. Density is not possible with conventional turbines, which need to be spaced about three times the rotor's diameter in order to avoid air turbulence. But Windstalks work on chaos and turbulence so they can be installed much closer together, said Núñez-Ameni.
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...1 more annotation...
Núñez-Ameni also reports that the firm is currently working on taking the Windstalk idea underwater. Called Wavestalk, the whole system would be inverted to harness energy from the flow of ocean currents and waves.
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Luís F. Simões on 19 Sep 11

additional information: http://atelierdna.com/?p=144

<div class="cArrow"> </div><div class="cContentInner">additional information: <a href="http://atelierdna.com/?p=144" rel="nofollow" target="_blank">http://atelierdna.com/?p=144</a></div>

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LeopoldS on 24 Sep 11

isn't this a bit of a contradiction: on the one hand: "Based on rough estimates, said Núñez-Ameni the output would be comparable to that of a conventional wind farm covering the same area" and on the other: "After completion, a Windstalk should be able to produce as much electricity as a single wind turbine, with the advantage that output could be increased with a denser array of stalks. Density is not possible with conventional turbines, which need to be spaced about three times the rotor's diameter in order to avoid air turbulence. " still, very interesting concept!

<div class="cArrow"> </div><div class="cContentInner">isn't this a bit of a contradiction: on the one hand: "Based on rough estimates, said Núñez-Ameni the output would be comparable to that of a conventional wind farm covering the same area" and on the other: "After completion, a Windstalk should be able to produce as much electricity as a single wind turbine, with the advantage that output could be increased with a denser array of stalks. Density is not possible with conventional turbines, which need to be spaced about three times the rotor's diameter in order to avoid air turbulence. " still, very interesting concept!</div>

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EUROPA - Press Releases - Investing in the future: Commission calls for ad... - 0 views

europa.eu/...pressReleasesAction.do

EU energy research 2020

shared by nikolas smyrlakis on 08 Oct 09 - Cached

nikolas smyrlakis on 08 Oct 09

an additional investment of €50 billion in energy technology research will be needed over the next 10 years. This means almost tripling the annual investment in the European Union, from €3 to €8 billion

<div class="cArrow"> </div><div class="cContentInner">an additional investment of €50 billion in energy technology research will be needed over the next 10 years. This means almost tripling the annual investment in the European Union, from €3 to €8 billion</div>

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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.
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Trapping Carbon Dioxide Or Switching To Nuclear Power Not Enough To Solve Global Warmin... - 0 views

www.sciencedaily.com/...090713085248.htm

climate change global warming

shared by Nina Nadine Ridder on 14 Jul 09 - Cached

pacome delva on 14 Jul 09

hello, you should put underscores between the words of your tags otherwise it makes two tags...

<div class="cArrow"> </div><div class="cContentInner">hello, you should put underscores between the words of your tags otherwise it makes two tags...</div>

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Nina Nadine Ridder on 15 Jul 09

Oh... sorry. Thought that it's enough to seperate the tags with a comma. Won't happen again!

<div class="cArrow"> </div><div class="cContentInner">Oh... sorry. Thought that it's enough to seperate the tags with a comma. Won't happen again!</div>

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http://downloads.globalchange.gov/usimpacts/pdfs/climate-impacts-report.pdf - 0 views

downloads.globalchange.gov/...climate-impacts-report.pdf

climate change carbon CO2

shared by LeopoldS on 05 Sep 09 - No Cached

LeopoldS on 05 Sep 09

nina and Friederike - please have a look at this ... some good arguments in it very likely ....

<div class="cArrow"> </div><div class="cContentInner">nina and Friederike - please have a look at this ... some good arguments in it very likely ....</div>

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Army heli-Weeble hops to avoid rubble trouble - tech - 18 September 2009 - New Scientist - 0 views

www.newscientist.com/...s-to-avoid-rubble-trouble.html

flying robotics hopping

shared by Juxi Leitner on 21 Sep 09 - Cached

is a rotor-powered, bottom-heavy, self-righting vehicle that spends most of its time on the ground, thus conserving battery power. Instead of flying around, it hops, using a pair of contra-rotating rotors (to avoid the need for a tail rotor) mounted on an aluminium base. All this is encased in a spherical cage made of strong carbon-fibre spars (see diagram).
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BBC NEWS | Science & Environment | Space rock yields carbon bounty - 0 views

news.bbc.co.uk/...8068049.stm

bio astronomy

shared by Francesco Biscani on 26 May 09 - Cached

Francesco Biscani on 26 May 09

All we are is stardust.

<div class="cArrow"> </div><div class="cContentInner">All we are is stardust.</div>

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