Patent ID: 9250204
Filing Date: 2016-02-02
CPC Classification: G01N,H01L

Claim Text:
1. A sensor, comprising: a fluid channel defined in a substrate, the fluid channel having a first end and a second end; a first cavity in communication with the first end of the fluid channel, and a second cavity in communication with the second end of the fluid channel opposite the first end so as to define a fluid flow path comprising the first cavity, the fluid channel and the second cavity; a transistor gate dielectric layer, comprising a first dielectric layer, disposed on the substrate and over the fluid channel; a graphene layer disposed on the transistor gate dielectric layer; a second dielectric layer disposed on the graphene layer; a source region disposed on the transistor gate dielectric layer, the source region also in contact with a first end of the graphene layer; a drain region disposed on the gate dielectric layer, the drain region also in contact with a second end of the graphene layer; a capping layer disposed on a portion of the substrate; and wherein the channel comprises a physical opening formed in the substrate so as to define a gap between a bottom surface of the gate dielectric layer and a top surface of the substrate.