High-sensitivity graphene MEMS force and acceleration sensor based on graphene-induced non-radiative transition

TL;DR

This paper presents a highly sensitive, wireless MEMS force and acceleration sensor based on graphene-induced non-radiative transitions, capable of detecting extremely small deflections, forces, and accelerations without external power sources.

Contribution

It introduces a novel graphene-based MEMS sensor leveraging non-radiative transitions for ultra-sensitive detection and wireless operation, with potential for diverse micro-device applications.

Findings

Detects deflections as small as 1 nm

Measures forces as low as 0.1 pN

Detects accelerations of 0.1 mg

Abstract

The micro-electromechanical-system (MEMS) force and acceleration sensor utilizing the graphene-induced non-radiative transition was investigated. The graphene-induced non-radiative transition is very sensitive to the distance, and the deflection of the graphene ribbon is highly susceptive to applied force or acceleration. Thus, a high-sensitivity MEMS sensor can be achieved with detecting the graphene ribbon's deflection of 1 nm, the force of 0.1 pN, and the acceleration of 0.1 mg. The MEMS sensor, with a size of only tens of microns, can be charged by light irradiation without connecting power sources. In addition, it allows long-distance detection, i.e., wireless transmitter circuit can be omitted. Therefore, it will have significant application prospects in the fields of micro-smart devices, wearable devices, biomedical systems, and so on.