Patent ID: 11921112
Assignee: PARAGRAF USA INC.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 0:
1. An apparatus comprising:
a biosensor integrated circuit (“IC”) chip with one or more sensing zones within one or more well structures configured to receive a liquid comprising one or more biological analytes, the biosensor IC chip further comprising:
a two-dimensional (“2D”) nanomaterial layer disposed on a dielectric oxide layer on a wafer to form a 2D channel for a liquid gated field effect transistor in an array of liquid gated field effect transistors;
an etch stop layer deposited over the 2D nanomaterial layer;
a passivation layer deposited over the etch stop layer;
one or more openings or trenches etched through the passivation layer and the etch stop layer to expose a portion of a top side and/or an edge of the 2D nanomaterial;
a drain electrode formed in electrode material so as to form one or more of an edge side contact or a top side contact with an exposed portion of the 2D nanomaterial at a first end of the 2D channel; and
a source electrode formed in electrode material so as to form one or more of an edge side contact or a top-side contact with an exposed portion of the 2D nanomaterial at a second end of the 2D channel,
wherein a liquid gate for the field effect transistor is formed above a top surface of the 2D channel upon receiving the liquid.