Patent ID: 11946920
Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method for manufacturing a hydrogen sensor, comprising:
a first sacrificial layer formation step of forming a first sacrificial layer to a predetermined thickness on a substrate, the substrate being configured to perform a function of an electrode, a support portion formation step of forming a support portion having insulating properties on an outside of the first sacrificial layer, the support portion including a first support portion and a second support portion respectively spaced a predetermined distance apart from the first sacrificial layer after the first sacrificial layer formation step, a second sacrificial layer formation step of forming a second sacrificial layer having a spacer disposed between the first sacrificial layer and the support portion and a side protrusion protruding from a side of the spacer to a predetermined length and disposed at part of an upper surface of the first sacrificial layer after the support portion formation step, a sensor portion formation step of forming a sensor portion supported on the support portion with an end contacting the first sacrificial layer through deposition of a metal that expands in reaction with hydrogen after the second sacrificial layer formation step, and a nanogap formation step of forming a nanogap by removing the first sacrificial layer and the second sacrificial layer after the sensor portion formation step, wherein a thickness of the nanogap formed by the separation of the substrate and the sensor portion is adjusted by adjusting a thickness of the first sacrificial layer;
wherein the removing the first sacrificial layer and the second sacrificial layer after the seating portion formation step forms the nanogap to be bounded on opposing sides by the first support portion and the second support portion.