Theoretical investigation on the effect of volume fraction in the optical trapping of gold nanoparticles

Journal article (2023)

Authors

Z. Zhu ImPhys/Urbach group - AS , Shenzhen University
Yu Quan Zhang Shenzhen University
A.J.L. Adam ImPhys/Adam group - AS
Changjun Min Shenzhen University
Paul Urbach ImPhys/Urbach group - AS
Xiaocong Yuan Shenzhen University
Research Group
ImPhys/Urbach group (AS) (TU Delft)
Copyright: © 2023 Z. Zhu, Yu Quan Zhang, A.J.L. Adam, Changjun Min, Paul Urbach, Xiaocong Yuan
DOI: https://doi.org/10.1016/j.optcom.2023.129572
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Published Date

2023

Language

English

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Faculty

Applied Sciences

Department

ImPhys/Imaging Physics

Research Group

ImPhys/Urbach group

Abstract

Stable optical trapping of gold nanoparticles is essential and desirable because of its wide applications in nanotechnology. While several factors have been proposed to affect optical trapping stability, the sample's volume fraction during optical trapping has often been neglected. To address this, by utilizing the effective medium theory, we analyze the stability of optical trapping of a gold nanoparticle in human serum albumin solutions, HIV-1,virus solutions, and gold nanoparticle solutions in this article. Our comparative analysis of the optical force and potential on a single gold nanoparticle in solutions of varying volume fractions reveals that both parameters decrease with increasing volume fraction. This finding can aid in more effective control of gold nanoparticles in various applications.

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