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All-optical reconfigurable chiral meta-molecules.

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 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.

SUBMITTER: Lin L

PROVIDER: S-EPMC6880947 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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All-optical reconfigurable chiral meta-molecules.

Lin Linhan L Lepeshov Sergey S Krasnok Alex A Jiang Taizhi T Peng Xiaolei X Korgel Brian A BA Alù Andrea A Zheng Yuebing Y

Materials today (Kidlington, England) 20190309

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 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 atom ...[more]

PMID: 31777449

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