Journal
NANO LETTERS
Volume 16, Issue 9, Pages 5823-5828Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b02583
Keywords
Chiral metamaterials; dielectric chiral metamaterials; circular dichroism; optical rotation; plasmonics
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Funding
- Italian projects PON R&C MAAT Molecular NAnotechnology for HeAlth and EnvironmenT [PON02 00563 3316357]
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The capability to fully control the chito-optical properties of metamaterials in the visible range enables a number of applications from integrated photonics to life science. To achieve this goal, a simultaneous, control over complex spatial and localized structuring as well as material composition at the nanoscale is required. Here, we demonstrate how circular dichroic bands and optical rotation can be effectively and independently tailored throughout the visible regime as a function of, the fundamental meta-atoms properties and of their three dimensional architecture in a the helix-shaped metamaterials. The record chiro-optical effects obtained in the visible range are accompanied by an additional control over optical efficiency, even in the plasmonic context. These achievements pave the way toward fully integrated chiral photonic devices.
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