Tuning Geometric Chirality in Metallic and Hybrid Nanostructures by Controlled Nanoscale Crystal Symmetry Breaking

Published

April 23, 2023

Author(s)

Andras E. Vladar, Hayu Liu, Peng-Peng Wang, Min Ouyang

Abstract

Understanding and controlling chirality in inorganic crystalline materials at the nanoscale is crucial in elucidating fundamental chirality-dependent physical and chemical processes as well as advancing new technological prospects but remains significant challenges due to the lack of materials control. Here we have developed a general bottom-up synthetic strategy for achieving chiral plasmonic Au nanostructures, including nanocubes and nanorods with fine chirality control. The underlying chiral mechanism enabled by the chiral boundary morphology is substantiated by theoretical modelling and finite element method simulation. Because of the robustness of induced handedness and their small size, these as-synthesized chiral nanostructures can be further employed as building blocks towards formation of complex chiral nanostructures. We have demonstrated a new class of chiral hybrid metal-semiconductor nanostructures that can allow integration of chirality with other properties and functionalities. All these together have paved the way to engineer nanoscale inorganic chirality and thus study various emerging chirality entangled effects with practical technology applications.

Citation

Nature Materials

Volume

145

Pub Type

Journals

Download Paper

https://doi.org/10.1021/jacs.3c00503

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Keywords

Chirality, tuning nanocube, synthesis, characterization, modeling, optics

Citation

Vladar, A. , Liu, H. , Wang, P. and Ouyang, M. (2023), Tuning Geometric Chirality in Metallic and Hybrid Nanostructures by Controlled Nanoscale Crystal Symmetry Breaking, Nature Materials, [online], https://doi.org/10.1021/jacs.3c00503, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=935817 (Accessed October 20, 2025)