Researchers use graphene oxide to create a self-powered sensor that translates sign language into audio

Researchers from Tsinghua University recently developed a self-powered sensor that can monitor and detect multiple environmental stimuli simultaneously and demonstrated how it can “translate” sign language into audio.

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The sensor was made from graphene oxide and powered internally by a moist electric generator called MEG, which contains a membrane that spontaneously absorbs water from the air. When water adheres to the surface, this results in a higher concentration of hydrogen ions at the top of the membrane and a potential difference between its two electrodes.