Gold Nanorod Plasmon Resonance Damping Effects on a Nanopatterned Substrate

Z. Zolnai, Dániel Zámbó, Z. Osváth, N. Nagy, M. Fried, Attila Németh, Szilárd Pothorszky, Dániel Péter Szekrényes, A. Deák

Research output: Contribution to journalArticle

Abstract

Substrate properties might significantly influence the scattering spectra of supported plasmonic nanoparticles because of different damping mechanisms. In this work, indium tin oxide substrates are modified by the combination of nanosphere lithography and ion-bombardment to create a nanopattern with sharp boundaries between the irradiated and masked regions. The single-particle scattering spectra of gold nanorods distributed over the nanopattern are investigated in detail. For nanorods located purely on either the masked or implanted areas, the spectra can be adequately interpreted in terms of a classical damped harmonic oscillator model, taking the chemical interface damping into account. When the particles overlap the masked and irradiated areas, however, markedly a different behavior is found depending on the actual arrangement. For the rods experiencing a symmetric inhomogeneity (i.e., by bridging between two masked regions), damping varies smoothly with the extent of substrate inhomogeneity. For the asymmetric case (rods overlapping the boundary between the implanted and masked zones), a sudden increase of the damping is found, which is rather independent on the specific extent of substrate inhomogeneity. Comparing the damping variations with the related intensity changes indicates that substrate inhomogeneity at such length scales results in a different behavior than predicted by the classical damped harmonic oscillator model applied for nanoparticles encapsulated or homogeneously surrounded by molecular coatings.

Original languageEnglish
Pages (from-to)24941-24948
Number of pages8
JournalJournal of Physical Chemistry C
Volume122
Issue number43
DOIs
Publication statusPublished - Nov 1 2018

Fingerprint

Nanorods
Gold
nanorods
Damping
damping
gold
inhomogeneity
Substrates
harmonic oscillators
rods
Scattering
Nanoparticles
nanoparticles
Nanospheres
Ion bombardment
Tin oxides
scattering
indium oxides
Indium
Lithography

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

Gold Nanorod Plasmon Resonance Damping Effects on a Nanopatterned Substrate. / Zolnai, Z.; Zámbó, Dániel; Osváth, Z.; Nagy, N.; Fried, M.; Németh, Attila; Pothorszky, Szilárd; Szekrényes, Dániel Péter; Deák, A.

In: Journal of Physical Chemistry C, Vol. 122, No. 43, 01.11.2018, p. 24941-24948.

Research output: Contribution to journalArticle

Zolnai, Z. ; Zámbó, Dániel ; Osváth, Z. ; Nagy, N. ; Fried, M. ; Németh, Attila ; Pothorszky, Szilárd ; Szekrényes, Dániel Péter ; Deák, A. / Gold Nanorod Plasmon Resonance Damping Effects on a Nanopatterned Substrate. In: Journal of Physical Chemistry C. 2018 ; Vol. 122, No. 43. pp. 24941-24948.
@article{03e9918d730f4ed99fb3395ba4f546a0,
title = "Gold Nanorod Plasmon Resonance Damping Effects on a Nanopatterned Substrate",
abstract = "Substrate properties might significantly influence the scattering spectra of supported plasmonic nanoparticles because of different damping mechanisms. In this work, indium tin oxide substrates are modified by the combination of nanosphere lithography and ion-bombardment to create a nanopattern with sharp boundaries between the irradiated and masked regions. The single-particle scattering spectra of gold nanorods distributed over the nanopattern are investigated in detail. For nanorods located purely on either the masked or implanted areas, the spectra can be adequately interpreted in terms of a classical damped harmonic oscillator model, taking the chemical interface damping into account. When the particles overlap the masked and irradiated areas, however, markedly a different behavior is found depending on the actual arrangement. For the rods experiencing a symmetric inhomogeneity (i.e., by bridging between two masked regions), damping varies smoothly with the extent of substrate inhomogeneity. For the asymmetric case (rods overlapping the boundary between the implanted and masked zones), a sudden increase of the damping is found, which is rather independent on the specific extent of substrate inhomogeneity. Comparing the damping variations with the related intensity changes indicates that substrate inhomogeneity at such length scales results in a different behavior than predicted by the classical damped harmonic oscillator model applied for nanoparticles encapsulated or homogeneously surrounded by molecular coatings.",
author = "Z. Zolnai and D{\'a}niel Z{\'a}mb{\'o} and Z. Osv{\'a}th and N. Nagy and M. Fried and Attila N{\'e}meth and Szil{\'a}rd Pothorszky and Szekr{\'e}nyes, {D{\'a}niel P{\'e}ter} and A. De{\'a}k",
year = "2018",
month = "11",
day = "1",
doi = "10.1021/acs.jpcc.8b07521",
language = "English",
volume = "122",
pages = "24941--24948",
journal = "Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "43",

}

TY - JOUR

T1 - Gold Nanorod Plasmon Resonance Damping Effects on a Nanopatterned Substrate

AU - Zolnai, Z.

AU - Zámbó, Dániel

AU - Osváth, Z.

AU - Nagy, N.

AU - Fried, M.

AU - Németh, Attila

AU - Pothorszky, Szilárd

AU - Szekrényes, Dániel Péter

AU - Deák, A.

PY - 2018/11/1

Y1 - 2018/11/1

N2 - Substrate properties might significantly influence the scattering spectra of supported plasmonic nanoparticles because of different damping mechanisms. In this work, indium tin oxide substrates are modified by the combination of nanosphere lithography and ion-bombardment to create a nanopattern with sharp boundaries between the irradiated and masked regions. The single-particle scattering spectra of gold nanorods distributed over the nanopattern are investigated in detail. For nanorods located purely on either the masked or implanted areas, the spectra can be adequately interpreted in terms of a classical damped harmonic oscillator model, taking the chemical interface damping into account. When the particles overlap the masked and irradiated areas, however, markedly a different behavior is found depending on the actual arrangement. For the rods experiencing a symmetric inhomogeneity (i.e., by bridging between two masked regions), damping varies smoothly with the extent of substrate inhomogeneity. For the asymmetric case (rods overlapping the boundary between the implanted and masked zones), a sudden increase of the damping is found, which is rather independent on the specific extent of substrate inhomogeneity. Comparing the damping variations with the related intensity changes indicates that substrate inhomogeneity at such length scales results in a different behavior than predicted by the classical damped harmonic oscillator model applied for nanoparticles encapsulated or homogeneously surrounded by molecular coatings.

AB - Substrate properties might significantly influence the scattering spectra of supported plasmonic nanoparticles because of different damping mechanisms. In this work, indium tin oxide substrates are modified by the combination of nanosphere lithography and ion-bombardment to create a nanopattern with sharp boundaries between the irradiated and masked regions. The single-particle scattering spectra of gold nanorods distributed over the nanopattern are investigated in detail. For nanorods located purely on either the masked or implanted areas, the spectra can be adequately interpreted in terms of a classical damped harmonic oscillator model, taking the chemical interface damping into account. When the particles overlap the masked and irradiated areas, however, markedly a different behavior is found depending on the actual arrangement. For the rods experiencing a symmetric inhomogeneity (i.e., by bridging between two masked regions), damping varies smoothly with the extent of substrate inhomogeneity. For the asymmetric case (rods overlapping the boundary between the implanted and masked zones), a sudden increase of the damping is found, which is rather independent on the specific extent of substrate inhomogeneity. Comparing the damping variations with the related intensity changes indicates that substrate inhomogeneity at such length scales results in a different behavior than predicted by the classical damped harmonic oscillator model applied for nanoparticles encapsulated or homogeneously surrounded by molecular coatings.

UR - http://www.scopus.com/inward/record.url?scp=85055709619&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85055709619&partnerID=8YFLogxK

U2 - 10.1021/acs.jpcc.8b07521

DO - 10.1021/acs.jpcc.8b07521

M3 - Article

AN - SCOPUS:85055709619

VL - 122

SP - 24941

EP - 24948

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

IS - 43

ER -