AudioNervosa
Systemic Development => Speakers => Topic started by: BobM on March 21, 2013, 11:34:31 AM
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http://www.technologyreview.com/view/512496/first-graphene-audio-speaker-easily-outperforms-traditional-designs/?utm_campaign=newsletters&utm_source=newsletter-daily-all&utm_medium=email&utm_content=20130314 (http://www.technologyreview.com/view/512496/first-graphene-audio-speaker-easily-outperforms-traditional-designs/?utm_campaign=newsletters&utm_source=newsletter-daily-all&utm_medium=email&utm_content=20130314)
- Is this new or is it just an electrostatic?
- Is it just graphene replacing mylar?
- Small now, so only appropriate for headphones?
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Interesting . What surprised me the most was not one measurement provided.
charles
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Well, the graphene would replace mylar. Notice they didn't compare the Graphene driver to a Stax driver. THAT would be an interesting comparison.
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Hey bobrex! =)
Graphene is a sheet of carbon only one molecule thick! So it has virtually no mass, but relatively high strength. I don't think it is strong enough to make a big diaphragm, yet. But it would sound fast 8)
I think the silicon grid for the AC signal is something new, instead of metal, etc.
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Hey Rich
Take a better look at the article. The membrane is multi-layered, and is 30nm (which I'm reading as nanometers) thick. That's what, about a third of a micron? While that is incredibly thin, it's definitely over a molecule. So more than likely a larger panel is possible.
So they sound better than a 15 buck earbud! They didn't set the goal too high, did they?
Yes, this does fall into the "it's a miracle that it works" category, and I'm not trying to denigrate the accomplishment, let's see how it shakes out.
Silicon and SiO2 are standard semiconductor materials - the base of almost all ICs. Using it for small stators is interesting.