Electrostatic graphene speaker
AssigneeThe Regents of the University of California
InventorsQin Zhou, Alexander K. Zettl
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Abstract
This disclosure provides a device that includes a graphene membrane and a first electrode proximate a first side of the graphene membrane, the first electrode being electrically conductive. The device further includes a frame comprising a first part and a second part, wherein the graphene membrane is suspended between the first part and the second part. The device is configured to have a frequency response across a frequency range at least from 20 Hz to 20 kHz or across the entire human audible frequency range. The device is a microphone or a loudspeaker.
Claims22
A device comprising:
- a graphene membrane;
- a first electrode proximate a first side of the graphene membrane, the first electrode being electrically conductive;
- and
- a frame comprising a first part and a second part;
- wherein the graphene membrane is suspended between the first part and the second part,
- wherein the device is configured to have a frequency response across a frequency range at least from 20 Hz to 20 kHz or across the entire human audible frequency range, and
- wherein the device is a microphone or a loudspeaker.
A device comprising:
- a graphene membrane;
- a first electrode proximate a first side of the graphene membrane, the first electrode being electrically conductive;
- and
- a frame comprising an open region;
- wherein the graphene membrane is adhered to the frame with an adhesive,
- wherein the device is configured to have a frequency response across a frequency range at least from 20 Hz to 20 kHz or across the entire human audible frequency range, and
- wherein the device is a microphone or a loudspeaker.
A device comprising:
- a graphene membrane;
- and
- a first electrode proximate a first side of the graphene membrane, the first electrode being electrically conductive;
- wherein the device is configured to have a frequency response across a frequency range at least from 20 Hz to 20 kHz or across the entire human audible frequency range,
- wherein the graphene membrane is configured such that air damping dominates power dissipation, and
- wherein the device is a microphone or a loudspeaker.
Dependencies are inferred from the claim text.