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When Plasmonic Colloids Meet Optical Vortices - A Brief Review

NOPR - NISCAIR Online Periodicals Repository

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Field Value
 
Title When Plasmonic Colloids Meet Optical Vortices - A Brief Review
 
Creator Kumar, G V Pavan
 
Subject Optical Vortices
Plasmonic Colloids
Optical Scattering
Absorption
 
Description 589-600
Structured light has emerged as an important tool to interrogate and manipulate matter at micron and sub-micron scale. One form of structured light is an optical vortex beam. The helical wave front of these vortices carry orbital angular momentum which can be transferred to a Brownian colloid. When the colloid is made of metallic nanostructures, such as silver and gold, resonant optical effects play a vital role, and the interaction leads to complex dynamics and assembly. This brief review aims to discuss some recent work on trapping plasmonic colloids with optical vortices and their lattices. The role of optical scattering and absorption has important implications on the underlying forces and torques, which is specifically enunciated. The effect of spin and orbital angular momentum in an optical vortex can lead to spin-orbit coupling dynamics, and these effects are highlighted with examples from the literature. In addition to assembly and dynamics, enhanced Brownian motion of plasmonic colloids under the influence of a vortex-lattice is discussed. The pedagogical aspects to understand the interaction between optical vortex and plasmonic colloids is emphasized.
 
Date 2023-07-03T10:45:24Z
2023-07-03T10:45:24Z
2023-07
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/62237
https://doi.org/10.56042/ijpap.v61i7.107
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.61(07) [July 2023]