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Algae powers computer for a year using only light and water
(www.anthropocenemagazine.org)
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this post was submitted on 09 Jul 2023
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... and light. This is a solar panel. Cool, but not really ground breaking as the article suggests.
With embedded battery, where neither depend on mined metals, both are biodegradable and non toxic, and it's carbon fixing (negative greenhouse gas impact). Yeah that's fucking groundbreaking.
You don't need a battery, just a capacitor for these levels of power draw, and you would be hard pressed to find a material that is more abundant on earth then silicon.