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All-optical reconfigurable chiral meta-molecules.

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Title: All-optical reconfigurable chiral meta-molecules.
Authors: Lin, Linhan1 (AUTHOR) linlh04@utexas.edu, Lepeshov, Sergey1 (AUTHOR), Krasnok, Alex1 (AUTHOR), Jiang, Taizhi1 (AUTHOR), Peng, Xiaolei1 (AUTHOR), Korgel, Brian A.1 (AUTHOR), Alù, Andrea1 (AUTHOR), Zheng, Yuebing1 (AUTHOR) zheng@austin.utexas.edu
Source: Materials Today. May2019, Vol. 25, p10-20. 11p.
Subjects: Chirality, Amino acids, Biomolecules, Physics, Chirality of nuclear particles, Chemistry
Abstract: Chirality is a ubiquitous phenomenon in the natural world. Many biomolecules without inversion symmetry, such as amino acids and sugars, are chiral molecules. Measuring and controlling molecular chirality at a high precision down to the atomic scale that are highly desired in physics, chemistry, biology, and medicine, however, have remained challenging. Herein, we achieve all-optical reconfigurable chiral meta-molecules experimentally using metallic and dielectric colloidal particles as artificial atoms or building blocks to serve at least two purposes. One is that the on-demand meta-molecules with strongly enhanced optical chirality are well-suited as substrates for surface-enhanced chiroptical spectroscopy of chiral molecules and as active components in optofluidic and nanophotonic devices. The other is that the bottom-up-assembled colloidal meta-molecules provide microscopic models to better understand the origin of chirality in the actual atomic and molecular systems. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Chirality is a ubiquitous phenomenon in the natural world. Many biomolecules without inversion symmetry, such as amino acids and sugars, are chiral molecules. Measuring and controlling molecular chirality at a high precision down to the atomic scale that are highly desired in physics, chemistry, biology, and medicine, however, have remained challenging. Herein, we achieve all-optical reconfigurable chiral meta-molecules experimentally using metallic and dielectric colloidal particles as artificial atoms or building blocks to serve at least two purposes. One is that the on-demand meta-molecules with strongly enhanced optical chirality are well-suited as substrates for surface-enhanced chiroptical spectroscopy of chiral molecules and as active components in optofluidic and nanophotonic devices. The other is that the bottom-up-assembled colloidal meta-molecules provide microscopic models to better understand the origin of chirality in the actual atomic and molecular systems. [ABSTRACT FROM AUTHOR]
ISSN:13697021
DOI:10.1016/j.mattod.2019.02.015