期刊
OPTICS EXPRESS
卷 26, 期 14, 页码 17841-17848出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.26.017841
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资金
- EPSRC (UK)
- ERC iPLASMM [321268]
- TAU Rector grant
- PAZY foundation
- German-Israeli Foundation [2399]
- Israel Sciecnce Foundataion [507/14]
- Russian Foundation for Basic Research [16-52-00112]
- Russian Science Foundation [16-12-10287]
- Ministry of Education and Science of Russian Federation [SP-4248.2016.1, 3.4982.2017/6.7]
- Royal Society
- Wolfson Foundation
- EPSRC [EP/M013812/1] Funding Source: UKRI
- European Research Council (ERC) [321268] Funding Source: European Research Council (ERC)
Optical activity is a fundamental phenomenon originating from the chiral nature of crystals and molecules. While intrinsic chiroptical responses of ordinary chiral materials to circularly polarized light are relatively weak, they can be enhanced by specially tailored nanostructures. Here, nanorod metamaterials, comprising a dense array of vertically aligned gold nanorods, is shown to provide a significant enhancement of the circular dichroism response of an embedded material. A nanorod composite, acting as an artificial uniaxial crystal, is filled with chiral mercury sulfide nanocrystals embedded in a transparent polymer. The metamaterial, being inherently achiral, enables optical activity enhancement or suppression. Unique properties of inherently achiral structures to tailor optical activities pave a way for flexible characterization of optical activity of molecules and nanocrystal-based compounds. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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