Enhancing near-ultraviolet circular dichroism and chirality-sorting optical forces using dielectric metasurfaces (Conference Presentation)

Kan Yao; Yuebing Zheng

doi:10.1117/12.2546152

10 March 2020 Enhancing near-ultraviolet circular dichroism and chirality-sorting optical forces using dielectric metasurfaces (Conference Presentation)

Kan Yao, Yuebing Zheng

Author Affiliations +

Proceedings Volume 11290, High Contrast Metastructures IX; 1129010 (2020) https://doi.org/10.1117/12.2546152
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

The functionality of biomolecules is largely relevant to their structural chirality, especially the handedness. Discriminating between enantiomers, namely mirror-imaged chiral molecule pairs, and physically separating them are thus vitally important in life sciences. However, completing these tasks by an optical means is very challenging, because the molecular chirality is intrinsically weak. Here we numerically study a design of dielectric metasurfaces for enhancing the near-ultraviolet circular dichroism of chiral molecules and for enantioselective separation of chiral nanoparticles by optical forces. The proposed device can also function as a helicity-preserving meta-mirror. Our findings may pave the way toward practical chiroptical devices.

Conference Presentation

Citation Download Citation

Kan Yao and Yuebing Zheng "Enhancing near-ultraviolet circular dichroism and chirality-sorting optical forces using dielectric metasurfaces (Conference Presentation)", Proc. SPIE 11290, High Contrast Metastructures IX, 1129010 (10 March 2020); https://doi.org/10.1117/12.2546152

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