Chiroptical effects in planar achiral plasmonic oriented nanohole arrays

Ben M. Maoz; Assaf Ben Moshe; Daniel Vestler; Omri Bar-Elli; Gil Markovich

doi:10.1021/nl300316f

Chiroptical effects in planar achiral plasmonic oriented nanohole arrays

Ben M. Maoz, Assaf Ben Moshe, Daniel Vestler, Omri Bar-Elli, Gil Markovich

Tel Aviv University

Research output: Contribution to journal › Article › peer-review

95 Scopus citations

Abstract

Chiroptical effects are routinely observed in three dimensional objects lacking mirror symmetry or quasi-two-dimensional thin films lacking in-plane mirror symmetry. Here we show that symmetric plasmonic planar arrays of circular nanoholes produced strong chiroptical responses at visible wavelengths on tilting them with respect to the incident light beam due to the collective asymmetric nature of their surface plasmon excitations. This extrinsic chiroptical effect can be stronger than the local chiroptical response in arrays of intrinsically chiral nanoholes and may be useful for chiral sensing and negative refraction.

Original language	English
Pages (from-to)	2357-2361
Number of pages	5
Journal	Nano Letters
Volume	12
Issue number	5
DOIs	https://doi.org/10.1021/nl300316f
State	Published - 9 May 2012
Externally published	Yes

Keywords

2D chirality
Nanohole arrays
circular dichroism
extrinsic chirality
plasmonic nanostructures

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10.1021/nl300316f

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abstract = "Chiroptical effects are routinely observed in three dimensional objects lacking mirror symmetry or quasi-two-dimensional thin films lacking in-plane mirror symmetry. Here we show that symmetric plasmonic planar arrays of circular nanoholes produced strong chiroptical responses at visible wavelengths on tilting them with respect to the incident light beam due to the collective asymmetric nature of their surface plasmon excitations. This extrinsic chiroptical effect can be stronger than the local chiroptical response in arrays of intrinsically chiral nanoholes and may be useful for chiral sensing and negative refraction.",

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AU - Maoz, Ben M.

AU - Ben Moshe, Assaf

AU - Vestler, Daniel

AU - Bar-Elli, Omri

AU - Markovich, Gil

PY - 2012/5/9

Y1 - 2012/5/9

N2 - Chiroptical effects are routinely observed in three dimensional objects lacking mirror symmetry or quasi-two-dimensional thin films lacking in-plane mirror symmetry. Here we show that symmetric plasmonic planar arrays of circular nanoholes produced strong chiroptical responses at visible wavelengths on tilting them with respect to the incident light beam due to the collective asymmetric nature of their surface plasmon excitations. This extrinsic chiroptical effect can be stronger than the local chiroptical response in arrays of intrinsically chiral nanoholes and may be useful for chiral sensing and negative refraction.

AB - Chiroptical effects are routinely observed in three dimensional objects lacking mirror symmetry or quasi-two-dimensional thin films lacking in-plane mirror symmetry. Here we show that symmetric plasmonic planar arrays of circular nanoholes produced strong chiroptical responses at visible wavelengths on tilting them with respect to the incident light beam due to the collective asymmetric nature of their surface plasmon excitations. This extrinsic chiroptical effect can be stronger than the local chiroptical response in arrays of intrinsically chiral nanoholes and may be useful for chiral sensing and negative refraction.

KW - 2D chirality

KW - Nanohole arrays

KW - circular dichroism

KW - extrinsic chirality

KW - plasmonic nanostructures

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JO - Nano Letters

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Chiroptical effects in planar achiral plasmonic oriented nanohole arrays

Abstract

Keywords

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