here is an interesting video about how solar cells can be way more efficient. This also kind-of covers the topic of 'power from radio waves'
if you think nano-diodes are impossible then check this article out:
Controllable nano-diode created - 08 July 2004 - New Scientist
if you think nano-diodes are impossible then check this article out:
Controllable nano-diode created - 08 July 2004 - New Scientist
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