Phase transition, self-stabilization, and negative torque in optically bound nanoparticles

Zijie Yan; Fei Han

doi:10.1117/12.2568769

20 August 2020 Phase transition, self-stabilization, and negative torque in optically bound nanoparticles

Zijie Yan, Fei Han

Proceedings Volume 11463, Optical Trapping and Optical Micromanipulation XVII; 114630Z (2020) https://doi.org/10.1117/12.2568769
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

Optically bound matter offers a route to study mesoscale electrodynamics interactions among nanoparticles. Here we report our recent work on light-driven self-organization of plasmonic nanoparticles. We observed new phenomena, such as phase transition, self-stabilization and negative torque, in optical matter systems ranging from 2 to 100 optically bound silver or gold nanoparticles. In particular, optical torque reversal can happen in stable dimers of two optically bound nanoparticles. These phenomena can be understood by electrodynamic simulations. Our results demonstrate the rich dynamics in optically bound matter.

Conference Presentation

Citation Download Citation

Zijie Yan and Fei Han "Phase transition, self-stabilization, and negative torque in optically bound nanoparticles", Proc. SPIE 11463, Optical Trapping and Optical Micromanipulation XVII, 114630Z (20 August 2020); https://doi.org/10.1117/12.2568769

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