World's Smallest FM Radio Transmitter Created With Graphene

minty3 writes "The team used graphene's mechanical 'stretchability' in order to create a voltage controlled oscillator (VCO) – an electronic component that can generate an FM signal. The VCO was used to send and receive audio signals of 100 megahertz. The team used pure tones and more complex music signals to tune the VCO's output and found that both kinds of signals could be 'faithfully reproduced' by an ordinary radio receiver."

100 Mhz audio?

[radaos]

Audio signals of 100 megahertz? They have perfected ultrasound then.

Re:*world's smallest VCO

[drinkypoo]

Is the size of the VCO a big deal in manufacturing of any radio transmitter?

Only for people interested in listening in on other people without their knowledge. I can't imagine anyone wanting to do that, though. Besides, you'd need a barely visible microphone [phys.org] to make it useful.

Re:*world's smallest VCO

[wbr1]

You don't even need this when most people willingly carry a remotely accessible microphone and transmitter in their pocket.