Solar Cells Modeled on A Moth's Eye

Solar cells that work indoors are being modeled on moth's eyes.  Fascinating stuff!  Here's an excerpt:

As a rule, most solar cells need to catch direct sunlight. Even those that work indoors can only do so much to generate power from artificial light sources. However, British researchers have found a clever (and decidedly) unusual way to harvest energy while inside: by imitating moths

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