Combined antenna and localized plasmon resonance in Raman scattering from Random arrays of silver-coated, vertically aligned multiwalled carbon nanotubes

Paul Dawson; J.A. Duenas; Michael Boyle; Matthew Doherty; S. E. J.  Bell; A. M.  Kern; O. F. J. Martin; A. S. Teh; K. B. K. Teo; W. I.  Milne

doi:10.1021/nl102838w

Combined antenna and localized plasmon resonance in Raman scattering from Random arrays of silver-coated, vertically aligned multiwalled carbon nanotubes

Paul Dawson, J.A. Duenas, Michael Boyle, Matthew Doherty, S. E. J. Bell, A. M. Kern, O. F. J. Martin, A. S. Teh, K. B. K. Teo, W. I. Milne

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

83 Citations (Scopus)

Abstract

The electric field enhancement associated with detailed structure within novel optical antenna nanostructures is modeled using the surface integral equation technique in the context of surface-enhanced Raman scattering (SERS). The antennae comprise random arrays of vertically aligned, multi-walled carbon nanotubes dressed with highly granular Ag. Different types of "hot-spot" underpinning the SERS are identified, but contrasting characteristics are revealed. Those at the outer edges of the Ag grains are antenna driven with field enhancement amplified in antenna antinodes while intergrain hotspots are largely independent of antenna activity. Hot-spots between the tops of antennae leaning towards each other also appear to benefit from antenna amplification.

Original language	English
Pages (from-to)	365-371
Number of pages	7
Journal	Nano Letters
Volume	11
Issue number	2
Early online date	25 Jan 2011
DOIs	https://doi.org/10.1021/nl102838w
Publication status	Published - 09 Feb 2011

ASJC Scopus subject areas

Condensed Matter Physics
Bioengineering
General Chemistry
General Materials Science
Mechanical Engineering

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title = "Combined antenna and localized plasmon resonance in Raman scattering from Random arrays of silver-coated, vertically aligned multiwalled carbon nanotubes",

abstract = "The electric field enhancement associated with detailed structure within novel optical antenna nanostructures is modeled using the surface integral equation technique in the context of surface-enhanced Raman scattering (SERS). The antennae comprise random arrays of vertically aligned, multi-walled carbon nanotubes dressed with highly granular Ag. Different types of {"}hot-spot{"} underpinning the SERS are identified, but contrasting characteristics are revealed. Those at the outer edges of the Ag grains are antenna driven with field enhancement amplified in antenna antinodes while intergrain hotspots are largely independent of antenna activity. Hot-spots between the tops of antennae leaning towards each other also appear to benefit from antenna amplification.",

author = "Paul Dawson and J.A. Duenas and Michael Boyle and Matthew Doherty and Bell, {S. E. J.} and Kern, {A. M.} and Martin, {O. F. J.} and Teh, {A. S.} and Teo, {K. B. K.} and Milne, {W. I.}",

year = "2011",

month = feb,

day = "9",

doi = "10.1021/nl102838w",

language = "English",

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journal = "Nano Letters",

issn = "1530-6984",

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T1 - Combined antenna and localized plasmon resonance in Raman scattering from Random arrays of silver-coated, vertically aligned multiwalled carbon nanotubes

AU - Dawson, Paul

AU - Duenas, J.A.

AU - Boyle, Michael

AU - Doherty, Matthew

AU - Bell, S. E. J.

AU - Kern, A. M.

AU - Martin, O. F. J.

AU - Teh, A. S.

AU - Teo, K. B. K.

AU - Milne, W. I.

PY - 2011/2/9

Y1 - 2011/2/9

N2 - The electric field enhancement associated with detailed structure within novel optical antenna nanostructures is modeled using the surface integral equation technique in the context of surface-enhanced Raman scattering (SERS). The antennae comprise random arrays of vertically aligned, multi-walled carbon nanotubes dressed with highly granular Ag. Different types of "hot-spot" underpinning the SERS are identified, but contrasting characteristics are revealed. Those at the outer edges of the Ag grains are antenna driven with field enhancement amplified in antenna antinodes while intergrain hotspots are largely independent of antenna activity. Hot-spots between the tops of antennae leaning towards each other also appear to benefit from antenna amplification.

AB - The electric field enhancement associated with detailed structure within novel optical antenna nanostructures is modeled using the surface integral equation technique in the context of surface-enhanced Raman scattering (SERS). The antennae comprise random arrays of vertically aligned, multi-walled carbon nanotubes dressed with highly granular Ag. Different types of "hot-spot" underpinning the SERS are identified, but contrasting characteristics are revealed. Those at the outer edges of the Ag grains are antenna driven with field enhancement amplified in antenna antinodes while intergrain hotspots are largely independent of antenna activity. Hot-spots between the tops of antennae leaning towards each other also appear to benefit from antenna amplification.

U2 - 10.1021/nl102838w

DO - 10.1021/nl102838w

M3 - Article

SN - 1530-6984

VL - 11

SP - 365

EP - 371

JO - Nano Letters

JF - Nano Letters

IS - 2

ER -

Combined antenna and localized plasmon resonance in Raman scattering from Random arrays of silver-coated, vertically aligned multiwalled carbon nanotubes

Abstract

ASJC Scopus subject areas

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