期刊
ACS NANO
卷 7, 期 7, 页码 6321-6329出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn402370x
关键词
hole-mask colloidal nanolithography; large-area chiral gold nanostructures; plasmonics; chirality; circular dichroism; dipole model
类别
资金
- European Research Council (ERC)
- BMBF (3D Metamat)
- DFG [FOR 730, SPP1391]
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.
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