Work

Multifunctional chip-scale plasmonic optical tweezers enabled by a polarization- and wavelength-dependent metasurface

Year: 2025

Type: article

Abstract: The ability of surface plasmons to confine light at a subwavelength scale enables new perspectives and opportunities in the field of nanotechnology. Making use of this unique advantage, plasmonic trapping techniques have been developed to tackle new challenges in a wide range of areas from physics to biology. However, it is still a challenge to achieve multifunctional chip-scale manipulation of small particles in a single plasmonic device. Here, we proposed a polarization- and wavelength-dependent plasmonic metasurface to realize multifunctional plasmonic optical tweezers. By fully utilizing the polarization and wavelength of light, it is shown that different kinds of SPP fields can be generated, which leads to integration of more than four optical manipulation functions, including plasmonic trapping as well as plasmonic spanner that can control both the rotation direction and radius of trapped particles. Furthermore, the metasurface also enables double-well optical trapping under linear polarization incidence. The proposed multifunctional metasurface facilitates diverse manipulation, which may open up new opportunities in biology, photonics, sensing, and related fields.

Source: Optics Express

DOI: 10.1364/oe.585194

Authors: Ying Yu, Cheng Chi, Lanqi Lian, Dan Wang, Qiao Jiang

Institution: Beijing Institute of Technology

Language: English

Topic: Orbital Angular Momentum in Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: National Natural Science Foundation of China