Fabrication and optical properties of large-scale arrays of gold nanocavities based on rod-in-a-tube coaxials

A. Murphy; Y. Sonnefraud; A. V. Krasavin; P. Ginzburg; F. Morgan; J. McPhillips; G. Wurtz; S. A. Maier; A. V. Zayats; R. Pollard

doi:10.1063/1.4794935

Fabrication and optical properties of large-scale arrays of gold nanocavities based on rod-in-a-tube coaxials

A. Murphy^*, Y. Sonnefraud, A. V. Krasavin, P. Ginzburg, F. Morgan, J. McPhillips, G. Wurtz, S. A. Maier, A. V. Zayats, R. Pollard

^*Corresponding author for this work

Physics

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

34 Citations (Scopus)

Abstract

Centimeter sized arrays of gold coaxial rod-in-a tube cavities have been fabricated using anodized aluminum oxide as a template. The etching process used to create the cavities enables the production of extremely small gaps between tube and rod, on the order of 5 nm, smaller than those created by standard fabrication techniques. Normal incidence spectroscopy reveals two extinction peaks in the visible and near infrared wavelength range associated with resonant plasmonic modes excited in the structure. Numerical simulations show that the modes are associated with in-phase and out-of-phase hybridization of transverse dipolar excitations in the nanorod and in the tube.

Original language	English
Article number	103103
Number of pages	5
Journal	APPLIED PHYSICS LETTERS
Volume	102
Issue number	10
DOIs	https://doi.org/10.1063/1.4794935
Publication status	Published - 11 Mar 2013

Keywords

REFRACTIVE-INDEX
NANOPARTICLES
NANOWIRE ARRAYS
LITHOGRAPHY
ANODIC ALUMINA
SURFACE-PLASMON RESONANCE
SHAPE
LIGHT
NANORODS
NANOPLASMONICS

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title = "Fabrication and optical properties of large-scale arrays of gold nanocavities based on rod-in-a-tube coaxials",

abstract = "Centimeter sized arrays of gold coaxial rod-in-a tube cavities have been fabricated using anodized aluminum oxide as a template. The etching process used to create the cavities enables the production of extremely small gaps between tube and rod, on the order of 5 nm, smaller than those created by standard fabrication techniques. Normal incidence spectroscopy reveals two extinction peaks in the visible and near infrared wavelength range associated with resonant plasmonic modes excited in the structure. Numerical simulations show that the modes are associated with in-phase and out-of-phase hybridization of transverse dipolar excitations in the nanorod and in the tube.",

keywords = "REFRACTIVE-INDEX, NANOPARTICLES, NANOWIRE ARRAYS, LITHOGRAPHY, ANODIC ALUMINA, SURFACE-PLASMON RESONANCE, SHAPE, LIGHT, NANORODS, NANOPLASMONICS",

author = "A. Murphy and Y. Sonnefraud and Krasavin, {A. V.} and P. Ginzburg and F. Morgan and J. McPhillips and G. Wurtz and Maier, {S. A.} and Zayats, {A. V.} and R. Pollard",

year = "2013",

month = mar,

day = "11",

doi = "10.1063/1.4794935",

language = "English",

volume = "102",

journal = "APPLIED PHYSICS LETTERS",

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TY - JOUR

T1 - Fabrication and optical properties of large-scale arrays of gold nanocavities based on rod-in-a-tube coaxials

AU - Murphy, A.

AU - Sonnefraud, Y.

AU - Krasavin, A. V.

AU - Ginzburg, P.

AU - Morgan, F.

AU - McPhillips, J.

AU - Wurtz, G.

AU - Maier, S. A.

AU - Zayats, A. V.

AU - Pollard, R.

PY - 2013/3/11

Y1 - 2013/3/11

N2 - Centimeter sized arrays of gold coaxial rod-in-a tube cavities have been fabricated using anodized aluminum oxide as a template. The etching process used to create the cavities enables the production of extremely small gaps between tube and rod, on the order of 5 nm, smaller than those created by standard fabrication techniques. Normal incidence spectroscopy reveals two extinction peaks in the visible and near infrared wavelength range associated with resonant plasmonic modes excited in the structure. Numerical simulations show that the modes are associated with in-phase and out-of-phase hybridization of transverse dipolar excitations in the nanorod and in the tube.

AB - Centimeter sized arrays of gold coaxial rod-in-a tube cavities have been fabricated using anodized aluminum oxide as a template. The etching process used to create the cavities enables the production of extremely small gaps between tube and rod, on the order of 5 nm, smaller than those created by standard fabrication techniques. Normal incidence spectroscopy reveals two extinction peaks in the visible and near infrared wavelength range associated with resonant plasmonic modes excited in the structure. Numerical simulations show that the modes are associated with in-phase and out-of-phase hybridization of transverse dipolar excitations in the nanorod and in the tube.

KW - REFRACTIVE-INDEX

KW - NANOPARTICLES

KW - NANOWIRE ARRAYS

KW - LITHOGRAPHY

KW - ANODIC ALUMINA

KW - SURFACE-PLASMON RESONANCE

KW - SHAPE

KW - LIGHT

KW - NANORODS

KW - NANOPLASMONICS

U2 - 10.1063/1.4794935

DO - 10.1063/1.4794935

M3 - Article

SN - 0003-6951

VL - 102

JO - APPLIED PHYSICS LETTERS

JF - APPLIED PHYSICS LETTERS

IS - 10

M1 - 103103

ER -

Fabrication and optical properties of large-scale arrays of gold nanocavities based on rod-in-a-tube coaxials

Abstract

Keywords

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