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Surface-enhanced Raman scattering of rhodamine 6G on nanowire arrays decorated with gold nanoparticles

Chen, Jianing; Mårtensson, Thomas LU ; Dick Thelander, Kimberly LU ; Deppert, Knut LU ; Xu, Hongqi LU ; Samuelson, Lars LU and Xu, Hongxing LU (2008) In Nanotechnology 19(27). p.5-275712
Abstract
We investigate the surface-enhanced Raman scattering (SERS) of rhodamine 6G (R6G) adsorbed on Au nanoparticles attached to InP nanowires. We find that nanowire arrays act as frameworks for effective SERS substrates with a significantly higher Raman signal sensitivity than a planar framework of Au nanoparticles adsorbed two-dimensionally on a flat surface. The SERS signal displays a clear polarization-dependent effect when the nanowires are arranged in a row. We also find that the SERS signal increases with time during continuous laser illumination. The plasmon-enhanced optical forces between Au nanoparticles may either move pairs of nanoparticles closer together or attract adsorbed molecules by moving them to the junctions of Au... (More)
We investigate the surface-enhanced Raman scattering (SERS) of rhodamine 6G (R6G) adsorbed on Au nanoparticles attached to InP nanowires. We find that nanowire arrays act as frameworks for effective SERS substrates with a significantly higher Raman signal sensitivity than a planar framework of Au nanoparticles adsorbed two-dimensionally on a flat surface. The SERS signal displays a clear polarization-dependent effect when the nanowires are arranged in a row. We also find that the SERS signal increases with time during continuous laser illumination. The plasmon-enhanced optical forces between Au nanoparticles may either move pairs of nanoparticles closer together or attract adsorbed molecules by moving them to the junctions of Au nanoparticle aggregates. Such effects by plasmon optical forces may cause the observed increase of the SERS signal with continuous laser illumination. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nanotechnology
volume
19
issue
27
pages
5 - 275712
publisher
IOP Publishing
external identifiers
  • wos:000256456000031
  • scopus:48249095551
ISSN
0957-4484
DOI
10.1088/0957-4484/19/27/275712
language
English
LU publication?
yes
id
f194e05d-bb76-452c-ace4-82da2700b93c (old id 1201167)
date added to LUP
2008-09-12 15:28:53
date last changed
2017-09-03 03:51:12
@article{f194e05d-bb76-452c-ace4-82da2700b93c,
  abstract     = {We investigate the surface-enhanced Raman scattering (SERS) of rhodamine 6G (R6G) adsorbed on Au nanoparticles attached to InP nanowires. We find that nanowire arrays act as frameworks for effective SERS substrates with a significantly higher Raman signal sensitivity than a planar framework of Au nanoparticles adsorbed two-dimensionally on a flat surface. The SERS signal displays a clear polarization-dependent effect when the nanowires are arranged in a row. We also find that the SERS signal increases with time during continuous laser illumination. The plasmon-enhanced optical forces between Au nanoparticles may either move pairs of nanoparticles closer together or attract adsorbed molecules by moving them to the junctions of Au nanoparticle aggregates. Such effects by plasmon optical forces may cause the observed increase of the SERS signal with continuous laser illumination.},
  author       = {Chen, Jianing and Mårtensson, Thomas and Dick Thelander, Kimberly and Deppert, Knut and Xu, Hongqi and Samuelson, Lars and Xu, Hongxing},
  issn         = {0957-4484},
  language     = {eng},
  number       = {27},
  pages        = {5--275712},
  publisher    = {IOP Publishing},
  series       = {Nanotechnology},
  title        = {Surface-enhanced Raman scattering of rhodamine 6G on nanowire arrays decorated with gold nanoparticles},
  url          = {http://dx.doi.org/10.1088/0957-4484/19/27/275712},
  volume       = {19},
  year         = {2008},
}