Enhanced sensitivity in nonlinear parity-time symmetric silicon micromechanical resonators.

ABSTRACT: Silicon resonant sensors are essential to a wide range of applications that involve the detection of pressure, acceleration, and magnetic fields. In general, they operate by monitoring a shift in the resonant frequency of silicon micromechanical resonators when subjected to perturbations due to the aforementioned parameters. This frequency shift manifests as a linear dependence on the perturbation. The demand for ever more precise silicon resonant sensors has catalyzed research endeavors aimed at boosting their sensitivity beyond geometrical constraints, including attempts to utilize synchronization phenomenon in coupled silicon resonators. Here, we establish and experimentally demonstrate a method using non-Hermitian singularities, or an exceptional point (EP), to amplify sensitivity. Thi

SUBMITTER: Xie YJ 

PROVIDER: S-EPMC12756326 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature