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Proceedings Paper

Enhancing near-ultraviolet circular dichroism and chirality-sorting optical forces using dielectric metasurfaces (Conference Presentation)
Author(s): Kan Yao; Yuebing Zheng

Paper 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.

Paper Details

Date Published: 10 March 2020
Proc. SPIE 11290, High Contrast Metastructures IX, 1129010 (10 March 2020); doi: 10.1117/12.2546152
Show Author Affiliations
Kan Yao, The Univ. of Texas at Austin (United States)
Yuebing Zheng, The Univ. of Texas at Austin (United States)

Published in SPIE Proceedings Vol. 11290:
High Contrast Metastructures IX
Connie J. Chang-Hasnain; Andrei Faraon; Weimin Zhou, Editor(s)

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