Hydrogen Bubbles Powered Microrockets

A team from the University of California, San Diego, has created what they are now calling microrockets: tiny self-propelled motors that can zip around an acidic environment, like the human stomach, without the need for any external fuel. The microrockets are the first known example of a chemically-powered micro-machine that powers itself without carrying some kind of fuel, like hydrogen peroxide, onboard. Rather, the UCSD team’s microrockets are powered by hydrogen bubbles produced by a reaction between an acidic solution–like that present in the stomach–and the zinc that the microrocket itself is made of.
(Source Link: Phys.Org)

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