PRESSURE SENSITIVE GRAPHENE-BASED VALVE ELEMENT
First Claim
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1. A valve element disposed between a gas pressure differential, comprising:
- (1) a separating wall placed between a gas at a higher pressure and a gas at a lower pressure, wherein the difference between the higher pressure and the lower pressure is a pressure differential, wherein the wall comprises an aperture allowing fluid communication between the gases;
(2) a valve membrane occluding the aperture, wherein the membrane comprises a graphene-based layer and a porous support, wherein the graphene-based layer is deposited upon the porous support;
wherein the valve membrane allows the gas at the higher pressure to begin to pass through the aperture when the pressure differential reaches an opening threshold.
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Abstract
Described herein is a graphene-based valve element capable of passive and repeatable stopping or allowing fluid flow as a function of inlet pressure. Passive flow controller devices based on the valve element are also described.
14 Citations
30 Claims
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1. A valve element disposed between a gas pressure differential, comprising:
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(1) a separating wall placed between a gas at a higher pressure and a gas at a lower pressure, wherein the difference between the higher pressure and the lower pressure is a pressure differential, wherein the wall comprises an aperture allowing fluid communication between the gases; (2) a valve membrane occluding the aperture, wherein the membrane comprises a graphene-based layer and a porous support, wherein the graphene-based layer is deposited upon the porous support; wherein the valve membrane allows the gas at the higher pressure to begin to pass through the aperture when the pressure differential reaches an opening threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 12, 13, 14, 16, 17, 19, 20, 21, 22, 24, 29, 30)
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Specification