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arXiv · 1810.00288

Optical tweezers as a mathematically driven spatio-temporal potential generator

John A. C. Albay·Govind Paneru·Hyuk Kyu Pak·Yonggun Jun
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Abstract

The ability to create and manipulate the spatio-temporal potentials is essential in the diverse fields of science and technology. Here, we introduce an optical feedback trap system based on a high precision position detection and an ultrafast feedback control of a Brownian particle in the optical tweezers to generate spatio-temporal virtual potentials of the desired shape in a controlled manner. As an application, we study nonequilibrium fluctuation dynamics of the particle in a time-varying virtual harmonic potential and validate the Crooks fluctuation theorem in highly nonequilibrium condition.

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John A. C. Albay, Govind Paneru, Hyuk Kyu Pak, Yonggun Jun. 2018-09-30. Optical tweezers as a mathematically driven spatio-temporal potential generator. https://doi.org/10.1364/oe.26.029906

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