Force measurement goes to femto-Newton sensitivity of single microscopic particle

Xiaohe Zhang; Bing Gu; Cheng-Wei Qiu

doi:10.1038/s41377-021-00684-6

Force measurement goes to femto-Newton sensitivity of single microscopic particle

Light Sci Appl. 2021 Dec 8;10(1):243. doi: 10.1038/s41377-021-00684-6.

Authors

Xiaohe Zhang^{1

2}, Bing Gu¹, Cheng-Wei Qiu³

Affiliations

¹ Advanced Photonics Center, Southeast University, Nanjing, 210096, China.
² Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117583, Singapore.
³ Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117583, Singapore. chengwei.qiu@nus.edu.sg.

Abstract

Highly sensitive force measurements of a single microscopic particle with femto-Newton sensitivity have remained elusive owing to the existence of fundamental thermal noise. Now, researchers have proposed an optically controlled hydrodynamic manipulation method, which can measure the weak force of a single microscopic particle with femto-Newton sensitivity.

Publication types

News