Plasmonic Horizon in Gold Nanosponges

Cynthia Vidal; Dmitry Sivun; Johannes Ziegler; Dong Wang; Peter Schaaf; Calin Hrelescu; Thomas A. Klar

doi:10.1021/acs.nanolett.7b04875

Plasmonic Horizon in Gold Nanosponges

Cynthia Vidal, Dmitry Sivun, Johannes Ziegler, Dong Wang, Peter Schaaf, Calin Hrelescu, Thomas A. Klar

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

27 Citations (Scopus)

Abstract

An electromagnetic wave impinging on a gold nanosponge coherently excites many electromagnetic hot-spots inside the nanosponge, yielding a polarization-dependent scattering spectrum. In contrast, a hole, recombining with an electron, can locally excite plasmonic hot-spots only within a horizon given by the lifetime of localized plasmons and the speed carrying the information that a plasmon has been created. This horizon is about 57 nm, decreasing with increasing size of the nanosponge. Consequently, photoluminescence from large gold nanosponges appears unpolarized.

Original language	English
Pages (from-to)	1269-1273
Number of pages	5
Journal	Nano Letters
Volume	18
Issue number	2
DOIs	https://doi.org/10.1021/acs.nanolett.7b04875
Publication status	Published - 14 Feb 2018
Externally published	Yes

Keywords

dark-field scattering
event horizon
fluorescence
nanosponges
Plasmonics
single particle spectroscopy

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10.1021/acs.nanolett.7b04875

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title = "Plasmonic Horizon in Gold Nanosponges",

abstract = "An electromagnetic wave impinging on a gold nanosponge coherently excites many electromagnetic hot-spots inside the nanosponge, yielding a polarization-dependent scattering spectrum. In contrast, a hole, recombining with an electron, can locally excite plasmonic hot-spots only within a horizon given by the lifetime of localized plasmons and the speed carrying the information that a plasmon has been created. This horizon is about 57 nm, decreasing with increasing size of the nanosponge. Consequently, photoluminescence from large gold nanosponges appears unpolarized.",

keywords = "dark-field scattering, event horizon, fluorescence, nanosponges, Plasmonics, single particle spectroscopy",

author = "Cynthia Vidal and Dmitry Sivun and Johannes Ziegler and Dong Wang and Peter Schaaf and Calin Hrelescu and Klar, {Thomas A.}",

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T1 - Plasmonic Horizon in Gold Nanosponges

AU - Vidal, Cynthia

AU - Sivun, Dmitry

AU - Ziegler, Johannes

AU - Wang, Dong

AU - Schaaf, Peter

AU - Hrelescu, Calin

AU - Klar, Thomas A.

PY - 2018/2/14

Y1 - 2018/2/14

N2 - An electromagnetic wave impinging on a gold nanosponge coherently excites many electromagnetic hot-spots inside the nanosponge, yielding a polarization-dependent scattering spectrum. In contrast, a hole, recombining with an electron, can locally excite plasmonic hot-spots only within a horizon given by the lifetime of localized plasmons and the speed carrying the information that a plasmon has been created. This horizon is about 57 nm, decreasing with increasing size of the nanosponge. Consequently, photoluminescence from large gold nanosponges appears unpolarized.

AB - An electromagnetic wave impinging on a gold nanosponge coherently excites many electromagnetic hot-spots inside the nanosponge, yielding a polarization-dependent scattering spectrum. In contrast, a hole, recombining with an electron, can locally excite plasmonic hot-spots only within a horizon given by the lifetime of localized plasmons and the speed carrying the information that a plasmon has been created. This horizon is about 57 nm, decreasing with increasing size of the nanosponge. Consequently, photoluminescence from large gold nanosponges appears unpolarized.

KW - dark-field scattering

KW - event horizon

KW - fluorescence

KW - nanosponges

KW - Plasmonics

KW - single particle spectroscopy

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VL - 18

SP - 1269

EP - 1273

JO - Nano Letters

JF - Nano Letters

IS - 2

ER -

Plasmonic Horizon in Gold Nanosponges

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Keywords

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