squarewaves

thefrogman: Warp Dogs.

Sat, 25 May 2013 02:33:32 -0400

thefrogman:

Warp Dogs.

jevanstrip: Alucinante o_o

Sat, 25 May 2013 02:30:44 -0400

jevanstrip:

Alucinante o_o

brucesterling: *Memories of the Space Age

Sat, 25 May 2013 02:30:31 -0400

brucesterling:

*Memories of the Space Age

black-and-white: mind pattern | by DpressedSoul

Sat, 25 May 2013 01:38:01 -0400

black-and-white:

mind pattern | by DpressedSoul

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Fri, 24 May 2013 23:46:53 -0400

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Fri, 24 May 2013 22:59:10 -0400

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Fri, 24 May 2013 22:38:47 -0400

fer1972: Can Art by Mydogsighs

Fri, 24 May 2013 21:58:41 -0400

fer1972:

Can Art by Mydogsighs

hellmanelegans: :D

Fri, 24 May 2013 21:00:46 -0400

hellmanelegans:

:D

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Fri, 24 May 2013 20:56:41 -0400

mnky: 「S.A.F.S」/「1608」の作品 [pixiv] #pixitail

Fri, 24 May 2013 20:50:30 -0400

mnky:

「S.A.F.S」/「1608」の作品 [pixiv] #pixitail

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Fri, 24 May 2013 03:32:28 -0400

wordsfromdaak: plush graffiti wall by scrumptiousdelight on...

Fri, 24 May 2013 03:31:59 -0400

wordsfromdaak:

plush graffiti wall by scrumptiousdelight on Flickr.

grinderbot: “Similar to the chloroplasts in green plants that...

Thu, 23 May 2013 22:41:46 -0400

grinderbot:

“Similar to the chloroplasts in green plants that carry out photosynthesis, our artificial photosynthetic system is composed of two semiconductor light absorbers, an interfacial layer for charge transport, and spatially separated co-catalysts,” says Peidong Yang, a chemist with Berkeley Lab’s Materials Sciences Division, who led this research. “To facilitate solar water- splitting in our system, we synthesized tree-like nanowire heterostructures, consisting of silicon trunks and titanium oxide branches. Visually, arrays of these nanostructures very much resemble an artificial forest.”

…

“In natural photosynthesis the energy of absorbed sunlight produces energized charge-carriers that execute chemical reactions in separate regions of the chloroplast,” Yang says. “We’ve integrated our nanowire nanoscale heterostructure into a functional system that mimics the integration in chloroplasts and provides a conceptual blueprint for better solar-to-fuel conversion efficiencies in the future.”

When sunlight is absorbed by pigment molecules in a chloroplast, an energized electron is generated that moves from molecule to molecule through a transport chain until ultimately it drives the conversion of carbon dioxide into carbohydrate sugars. This electron transport chain is called a “Z-scheme” because the pattern of movement resembles the letter Z on its side. Yang and his colleagues also use a Z-scheme in their system only they deploy two Earth abundant and stable semiconductors – silicon and titanium oxide - loaded with co-catalysts and with an ohmic contact inserted between them. Silicon was used for the hydrogen-generating photocathode and titanium oxide for the oxygen-generating photoanode. The tree-like architecture was used to maximize the system’s performance. Like trees in a real forest, the dense arrays of artificial nanowire trees suppress sunlight reflection and provide more surface area for fuel producing reactions.

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Wed, 22 May 2013 00:48:59 -0400

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Tue, 21 May 2013 22:30:23 -0400

louddetective: pleatedjeans: via THE BEST

Tue, 21 May 2013 22:13:05 -0400

louddetective:

pleatedjeans:

via

THE BEST

snowce: Moebius

Tue, 21 May 2013 22:01:40 -0400

snowce:

Moebius

hydro74: Contest. Game on! @karvt

Tue, 21 May 2013 15:40:05 -0400

hydro74:

Contest. Game on! @karvt

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Mon, 20 May 2013 20:54:49 -0400