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

Abstract

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.

Citation

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. https://doi.org/10.1364/oe.468024

• 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
• DOI: https://doi.org/10.1364/oe.468024
• Keywords: Atomic and Molecular Physics, and Optics
• Public URL: https://nottingham-repository.worktribe.com/output/11188292
• Publisher URL: https://opg.optica.org/oe/fulltext.cfm?uri=oe-30-19-34092&id=498609
• Additional Information: This article is maintained by: Optica Publishing Group; Crossref DOI link to publisher maintained version: https://doi.org/10.1364/OE.468024; 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.