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. Keywords: opto-thermoelectric tweezers; optical chirality; metamolecules; bottom-up assembly
Cite
@article{arxiv.1902.06834,
title = {All-optical reconfigurable chiral meta-molecules},
author = {Linhan Lin and Sergey Lepeshov and Alex Krasnok and Taizhi Jiang and Xiaolei Peng and Brian A. Korgel and Andrea Alù and Yuebing Zheng},
journal= {arXiv preprint arXiv:1902.06834},
year = {2019}
}