Reconfigurable construction of all-dielectric chiral metamaterials on solid substrates

Jingang Li; Yuebing Zheng

doi:10.1117/12.2568038

20 August 2020 Reconfigurable construction of all-dielectric chiral metamaterials on solid substrates

Jingang Li, Yuebing Zheng

Proceedings Volume 11463, Optical Trapping and Optical Micromanipulation XVII; 1146310 (2020) https://doi.org/10.1117/12.2568038
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

We apply a novel optical technique – optothermally-gated photon nudging – to construct all-dielectric chiral metamaterials with silicon nanoparticles (SiNPs) and silicon nanowires (SiNWs). Through coordinating optical heating and radiation-pressure forces, a SiNP is manipulated and delivered to the vicinity of a SiNW to form chiral nanostructures. By dynamically moving the SiNP along the nanowire from one side to the other end, the chirality of the nanostructure can be tailored on-demand. Owing to simultaneous electric and magnetic resonances in dielectric nanostructures, the assembled chiral metamaterials support strong enhancement of optical near-field chirality for high-performance enantiodiscrimination of chiral molecules.

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Citation Download Citation

Jingang Li and Yuebing Zheng "Reconfigurable construction of all-dielectric chiral metamaterials on solid substrates", Proc. SPIE 11463, Optical Trapping and Optical Micromanipulation XVII, 1146310 (20 August 2020); https://doi.org/10.1117/12.2568038

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KEYWORDS

Chiral metamaterials

Solids

Near field optics

Nanolithography

Silicon

Biomedical optics

Biosensing

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