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US 11,252,512 B2Granted
Electrostatic graphene speaker
AssigneeThe Regents of the University of California
InventorsQin Zhou, Alexander K. Zettl
Life of this patent
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Abstract
This disclosure provides systems, methods, and device associated with an electrostatically driven graphene speaker. In one aspect, the device includes a graphene membrane having a diameter of about 3 millimeters to about 11 millimeters, and a first electrode proximate a first side of the graphene membrane, the first electrode being electrically conductive. The device is a microphone or a loudspeaker.
Claims29
A device comprising:
- a graphene membrane having a diameter of about 3 millimeters to about 11 millimeters;
- and
- a first electrode proximate a first side of the graphene membrane, the first electrode being electrically conductive;
- a second electrode proximate a second side of the graphene membrane, the second 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, and
- wherein the device is a microphone or a loudspeaker.
3 more elements
A device comprising:
- a graphene membrane;
- a first electrode proximate a first side of the graphene membrane, the first electrode being electrically conductive;
- a second electrode proximate a second side of the graphene membrane, the second 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.
5 more elements
A device comprising:
- a graphene membrane;
- a first electrode proximate a first side of the graphene membrane, the first electrode being electrically conductive;
- a second electrode proximate a second side of the graphene membrane, the second 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.
5 more elements
A device comprising:
- a graphene membrane;
- a first electrode proximate a first side of the graphene membrane, the first electrode being electrically conductive;
- a second electrode proximate a second side of the graphene membrane, the second electrode being electrically conductive;
- and
- 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.
4 more elements
Dependencies are inferred from the claim text.