NAKATA, Masahiro; YASUDA, Takumi; MIYAMOTO, Masayuki; KITADA, Atsushi; OKAZAKI, Yutaka; ODA, Reiko; MURASE, Kuniaki; FUKAMI, Kazuhiro

doi:10.1021/acs.nanolett.2c03512

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Nano Letters. 2023-01-13, vol. 23, n° 2, p. 462-468

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Spatiotemporal pattern formation is dynamic self-organization widely observed in nature and drives various functions. Among these functions, chirality plays a central role. The relationship between dynamic self-organization and chirality has been an open question; therefore, the production of chiral nanomaterials by dynamic self-organization has not been achieved. Here, we show that the confinement of a two-dimensional spatiotemporal micropattern via the electrodeposition of a binary Cu alloy into a nanopore induces mirror symmetry breaking to produce a helical nanostructure of the noble-metal component although it is still not yet possible to control the handedness at this stage. This result suggests that spatiotemporal symmetry breaking functions as a mirror symmetry breaking if cylindrical pores are given as the boundary condition. This study can be a model system of how spatiotemporal symmetry breaking plays a role in mirror symmetry breaking, and it proposes a new approach to producing helical nanomaterials through dynamic selforganization.< Leer menos

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nanohelices

spatiotemporal pattern

electrodeposition

alloys

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Production of Noble-Metal Nanohelices Based on Nonlinear Dynamics in Electrodeposition of Binary Copper Alloys

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