Chiral Plasmonic Nanostructures Fabricated by Circularly Polarized Light
Chiral Plasmonic Nanostructures Fabricated by Circularly Polarized Light
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DOI：
10.1021/acs.nanolett.8b00929
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发表时间：
2018-05-01
期刊：
影响因子：
10.8
通讯作者：
Tatsuma, Tetsu
中科院分区：
文献类型：
--
作者：
Saito, Koichiro;Tatsuma, Tetsu
材料的手性导致了各种各样的先进技术，包括图像显示，数据存储，包括负折射在内的光管理，以及对映选择性催化和传感。本文首次利用圆偏振光作为唯一的手性源，将手性引入等离子体纳米结构。用圆偏振光照射作为半导体前驱体的金纳米立方体，根据光的手性在立方体的特定角处局部化电场，并在局部电场作用下沉积电介质部分作为电子振荡助推器。从而开发出具有高手性的等离子体纳米结构。目前的自下而上的方法将允许大规模和具有成本效益的制造手性材料，并进一步应用于功能材料和器件。
The chirality of materials results in a wide variety of advanced technologies including image display, data storage, light management including negative refraction, and enantioselective catalysis and sensing. Here, we introduce chirality to plasmonic nanostructures by using circularly polarized light as the sole chiral source for the first time. Gold nanocuboids as precursors on a semiconductor were irradiated with circularly polarized light to localize electric fields at specific corners of the cuboids depending on the handedness of light and deposited dielectric moieties as electron oscillation boosters by the localized electric field. Thus, plasmonic nanostructures with high chirality were developed. The present bottom-up method would allow the large-scale and cost-effective fabrication of chiral materials and further applications to functional materials and devices.