Microphone diaphragm
AssigneeVorbeck Materials Corp.
InventorsJOHN S. LETTOW, DAN F. SCHEFFER, KENNETH E. FRITSCH
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Abstract
Embodiments of the present invention relate to microphones diaphragms. In one embodiment, a sensor comprising a diaphragm comprised of a composition having a plurality of individual graphene sheets. An emitter formed in a manner to transmit lights towards a surface of the diaphragm. A collector that captures at least a portion of light that is reflected by the diaphragm. A converter is in communication with the detector that converts a signal that is generated by the sensor to a digital signal for processing. The graphene-based composition includes graphene sheets.
Claims20
A sensor comprising:
- a diaphragm comprised of a composition having individual graphene sheets;
- an emitter formed in a manner to transmit light towards a surface of the diaphragm;
- a collector that receives at least a portion of light reflected by the surface;
- a converter in communication with the collector that converts light received by the collector to a digital signal for processing;
- and
- wherein the diaphragm is made is manner to distort when impacted upon impact with a pressure wave.
A microphone diaphragm comprising:
- a first layer having individual graphene sheets;
- a second layer affixed at least to a portion of a surface of the first layer;
- wherein the second layer comprises a reflective material;
- wherein the diaphragm is formed in a manner to at least partially distorts in response to a pressure wave impacting thereon;
- and
- wherein the individual graphene sheets form a three-dimensional interconnected network throughout the composition in a manner wherein individual functional graphene sheets have nanometer scale separation at contact points between individual functional graphene sheets.
A method to fabricate a microphone diaphragm comprising:
- forming a first layer on to a surface of a substrate, wherein the first layer includes individual graphene sheets;
- curing the first layer;
- forming a second layer on a surface of the first layer;
- removing the first layer from the surface of the substrate;
- removing excess portions of the first layer and/or the second layer to form a predefined shape;
- and
- wherein the individual graphene sheets form a three-dimensional interconnected network in the first layer in a manner wherein individual functional graphene sheets have nanometer scale separation at contact points between individual functional graphene sheets.
Dependencies are inferred from the claim text.