Large-Area 3D Chiral Plasmonic Structures
Large-Area 3D Chiral Plasmonic Structures
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DOI:
10.1021/nn402370x
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发表时间:
2013-07-01
期刊:
影响因子:
17.1
通讯作者:
Giessen, Harald
中科院分区:
文献类型:
--
作者:
Frank, Bettina;Yin, Xinghui;Giessen, Harald
We manufacture large-area plasmonic structures featuring 3-dimensional chirality by colloidal nanohole lithography. By varying the polar rotating speed of the samples during gold evaporation, we can fabricate spiral-type ramp nanostructures. The optical properties show chiroptical resonances in the 100 to 400 THz frequency region (750 to 3000 nm), with circular dichroism values of up to 13%. Our method offers a simple low-cost manufacturing method of cm(2)-sized chiral plasmonic templates for chiroptical applications such as stereochemical enantiomer sensors.