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Nanoparticle manipulation using plasmonic optical tweezers based on particle sizes and refractive indices

Li, Huaxin; Ren, Yatao; Li, Yang; He, Mingjian; Gao, Baohai; Qi, Hong


Huaxin Li

Yatao Ren

Yang Li

Mingjian He

Baohai Gao

Hong Qi



As an effective tool for micro/nano-scale particle manipulation, plasmonic optical tweezers can be used to manipulate cells, DNA, and macromolecules. Related research is of great significance to the development of nanoscience. In this work, we investigated a sub-wavelength particle manipulation technique based on plasmonic optical tweezers. When the local plasmonic resonance is excited on the gold nanostructure arrays, the local electromagnetic field will be enhanced to generate a strong gradient force acting on nanoparticles, which could achieve particle sorting in sub-wavelength scale. On this basis, we explored the plasmonic enhancement effect of the sorting device and the corresponding optical force and optical potential well distributions. Additionally, the sorting effect of the sorting device was investigated in statistical methods, which showed that the sorting device could effectively sort particles of different diameters and refractive indices.


Li, H., Ren, Y., Li, Y., He, M., Gao, B., & Qi, H. (2022). Nanoparticle manipulation using plasmonic optical tweezers based on particle sizes and refractive indices. Optics Express, 30(19), 34092-34105.

Journal Article Type Article
Acceptance Date Aug 25, 2022
Online Publication Date Sep 2, 2022
Publication Date Sep 2, 2022
Deposit Date Jan 31, 2023
Publicly Available Date Feb 1, 2023
Journal Optics Express
Electronic ISSN 1094-4087
Publisher Optical Society of America
Peer Reviewed Peer Reviewed
Volume 30
Issue 19
Pages 34092-34105
Keywords Atomic and Molecular Physics, and Optics
Public URL
Publisher URL
Additional Information This article is maintained by: Optica Publishing Group; Crossref DOI link to publisher maintained version:; Article type: research-article; Similarity check: Screened by Similarity Check; Peer reviewed: Yes; Review process: Single blind; Received: 16 June 2022; Accepted: 25 August 2022; Published: 2 September 2022; Copyright: Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.


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