Optical property – composition correlation in noble metal alloy nanoparticles studied with EELS

Research output: Contribution to journalJournal article – Annual report year: 2019Researchpeer-review

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Optical property – composition correlation in noble metal alloy nanoparticles studied with EELS. / Kadkhodazadeh, Shima; Nugroho, Ferry Anggoro Ardy; Langhammer, Christoph; Beleggia, Marco; Wagner, Jakob Birkedal.

In: ACS Photonics, Vol. 6, No. 3, 2019, p. 779–786.

Research output: Contribution to journalJournal article – Annual report year: 2019Researchpeer-review

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@article{5ce48d9fee174554814745c8a1c45bac,
title = "Optical property – composition correlation in noble metal alloy nanoparticles studied with EELS",
abstract = "Noble metals are currently the most common building blocks in plasmonics and thus define the available range of optical properties. Their alloying provides a viable strategy to engineer new materials with a tunable range of optical responses. Despite this attractive prospect, the link between composition and optical properties of many noble metal alloys is still not well understood. Here, electron energy-loss spectroscopy is employed to systematically study AuAg and AuPd nanoparticles of varying compositions. The localized surface plasmons, the bulk plasmons, and the permittivity functions of these two sets of alloys are investigated as functions of their composition. In the case of the more widely studied AuAg alloy system, good agreement is found with previous experimental and theoretical studies. The results on the less scrutinized AuPd system provide highly valuable experimental data that complements other experimental investigations and supports the development of theoretical models.",
keywords = "Plasmonics, Alloys, Nanoparticles, Electron energy-loss spectroscopy, Optical properties, Localized surface plasmons, Prermittivity function",
author = "Shima Kadkhodazadeh and Nugroho, {Ferry Anggoro Ardy} and Christoph Langhammer and Marco Beleggia and Wagner, {Jakob Birkedal}",
year = "2019",
doi = "10.1021/acsphotonics.8b01791",
language = "English",
volume = "6",
pages = "779–786",
journal = "A C S Photonics",
issn = "2330-4022",
publisher = "American Chemical Society",
number = "3",

}

RIS

TY - JOUR

T1 - Optical property – composition correlation in noble metal alloy nanoparticles studied with EELS

AU - Kadkhodazadeh, Shima

AU - Nugroho, Ferry Anggoro Ardy

AU - Langhammer, Christoph

AU - Beleggia, Marco

AU - Wagner, Jakob Birkedal

PY - 2019

Y1 - 2019

N2 - Noble metals are currently the most common building blocks in plasmonics and thus define the available range of optical properties. Their alloying provides a viable strategy to engineer new materials with a tunable range of optical responses. Despite this attractive prospect, the link between composition and optical properties of many noble metal alloys is still not well understood. Here, electron energy-loss spectroscopy is employed to systematically study AuAg and AuPd nanoparticles of varying compositions. The localized surface plasmons, the bulk plasmons, and the permittivity functions of these two sets of alloys are investigated as functions of their composition. In the case of the more widely studied AuAg alloy system, good agreement is found with previous experimental and theoretical studies. The results on the less scrutinized AuPd system provide highly valuable experimental data that complements other experimental investigations and supports the development of theoretical models.

AB - Noble metals are currently the most common building blocks in plasmonics and thus define the available range of optical properties. Their alloying provides a viable strategy to engineer new materials with a tunable range of optical responses. Despite this attractive prospect, the link between composition and optical properties of many noble metal alloys is still not well understood. Here, electron energy-loss spectroscopy is employed to systematically study AuAg and AuPd nanoparticles of varying compositions. The localized surface plasmons, the bulk plasmons, and the permittivity functions of these two sets of alloys are investigated as functions of their composition. In the case of the more widely studied AuAg alloy system, good agreement is found with previous experimental and theoretical studies. The results on the less scrutinized AuPd system provide highly valuable experimental data that complements other experimental investigations and supports the development of theoretical models.

KW - Plasmonics

KW - Alloys

KW - Nanoparticles

KW - Electron energy-loss spectroscopy

KW - Optical properties

KW - Localized surface plasmons

KW - Prermittivity function

U2 - 10.1021/acsphotonics.8b01791

DO - 10.1021/acsphotonics.8b01791

M3 - Journal article

VL - 6

SP - 779

EP - 786

JO - A C S Photonics

JF - A C S Photonics

SN - 2330-4022

IS - 3

ER -