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Electronic microscopic image of a "nanoforest," with green tint added for contrast (Imge: Wang Research Group, UC San Diego Jacobs School of Engineering)
The light trapping effect in nanowire arrays sees photons bounced between single nanowires and eventually absorbed by them (R), allowing hydrogen fuel to be produced more efficiently compared to planar counterparts where they are reflected off the surface (L) (Image: Wang Research Group, UC San Diego Jacobs School of Engineering)
While hydrogen is considered a “clean” fuel because the only waste product it generates is water, the conventional way to produce it relies on electricity, which is usually produced through the burning of fossil fuels. Researchers at the University of California, San Diego (UCSD), have now developed a “3D branched nanowire array” that they claim could cheaply and cleanly deliver hydrogen fuel on a mass scale.
Read the full article: Solar energy-harvesting “nanotrees” could produce hydrogen fuel on a mass scale
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