DV Hardware bringing you the hottest news about processors, graphics cards, Intel, AMD, NVIDIA, hardware and technology!

   Home | News submit | News Archives | Reviews | Articles | Howto's | Advertise
 
DarkVision Hardware - Daily tech news
August 21, 2017 
Main Menu
Home
Info
News archives
Articles
Howto
Reviews
 

Who's Online
There are currently 67 people online.

 

Latest Reviews
Zowie P-TF Rough mousepad
Zowie FK mouse
BitFenix Ronin case
Ozone Rage ST headset
Lamptron FC-10 SE fan controller
ZOWIE G-TF Rough mousepad
ROCCAT Isku FX gaming keyboard
Prolimatech Magnetic Pin
 

Follow us
RSS
 

Berkeley researchers make first graphene headphones

Posted on Friday, March 15 2013 @ 12:56:34 CET by


Researchers at the University of California in Berkeley announced the creation of world's first graphene-based audio speaker. It's an earphone with diaphragm made from a 30nm-thick, 7mm-wide sheet of graphene. Interestingly, even without any optimizations, the graphene earphone is already superior to commercially available earphones such as the Sennheiser MX-400. The completely untuned, unoptimized graphene speaker performs amazingly in terms of frequency response and also in terms of energy efficiency.
Given graphene’s status as a wonder material we shouldn’t really be surprised, but it turns out that this graphene speaker — the first of its kind — has intrinsically excellent performance. As you can see in the graph above, the graphene earphone’s frequency response is superb. The reason for this is down to the graphene diaphragm’s simplicity: Whereas most diaphragms/cones must be damped (padded, restricted) to prevent undesirable frequency responses, the graphene diaphragm requires no damping. This is because graphene is so strong that the diaphragm can be incredibly thin — and thus very light. Instead of being artificially damped, the graphene diaphragm is damped by air itself. As a corollary, the lack of damping means that the graphene diaphragm is also very energy efficient — which could be important for reducing the power usage of smartphone and tablet speakers.
Full details over here. Graphene headphones made by Berkeley researchers



 



 

DV Hardware - Privacy statement
All logos and trademarks are property of their respective owner.
The comments are property of their posters, all the rest © 2002-2017 DM Media Group bvba