Nanoscale Electric Field Sensing Using Levitated Nano-resonator with Net Charge

2022/08/27 by Shaocong Zhu, Zhu, Shaocong, Zhenhai Fu +13 · 2 citations
Physics and Astronomy · Engineering · #Mechanical and Optical Resonators #Photonic and Optical Devices #Force Microscopy Techniques and Applications

paper · pdf · doi:10.48550/arxiv.2208.13047

Abstract

Nanomechanical resonator based on levitated particle exhibits unique advantages in the development of ultrasensitive electric field detector. We demonstrate a three-dimensional, high-sensitivity electric field measurement technology using the optically levitated nanoparticle with a known net charge. By changing the relative position between nanoparticle and parallel electrodes, the three-dimensional electric field distribution is scanned. The measured noise equivalent electric intensity with charge amount of 100 reaches the order of \rm1μV/cm/H\rmz^\rm1/2 at 1.4 × 10 ^{- 7}mbar. Linearity analysis near resonance frequency shows a measured linear range over 91dB limited only by the maximum output voltage of the driving equipment. This work may provide avenue for developing a high-sensitive electric field sensor based on optically levitated nano-resonator.

Cited by

• Free expansion of a charged nanoparticle via electrostatic compensation
• Roto-translational optomechanics

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