High-resolution biomolecules mass sensing based on a spinning optomechanical system with phonon pump

Abstract

Abstract We theoretically propose a high-resolution biomolecules mass sensor based on a spinning resonator with a coherent phonon pump. When the resonator spins along the clockwise and counterclockwise directions, the resonator undergoes a different Sagnac effect, which combines the phonon pump with tunable amplitude and phase results in significantly enhanced probe transmission. If the mass of external biomolecules (such as baculovirus or coronavirus) deposited on the resonator, they can be measured by tracking the resonance frequency shifts in the transmission spectrum. Therefore our study presents a means to classify different viruses, and can also be used to identify 2019-nCoV.