UC Berkeley researchers develop first graphene-based headphones

When UC Berkeley Professor of Physics Alex Zettl arrives at his lab in the morning, he’s never certain that his research assistants are busy at work.

‘I come in and I’ll see them with earphones in and I’ll ask, ‘What are you doing?’ and they will say “I’m just testing the graphene earphones.” But I’m never sure,” Zettl said.
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