Au nanoparticles on graphitic petal arrays for surface-enhanced Raman spectroscopy

Chandra Sekhar Rout, Anurag Kumar, Guoping Xiong, Joseph Irudayaraj, Timothy S. Fisher

Research output: Contribution to journalArticle

Abstract

We report a unique substrate for surface-enhanced Raman scattering (SERS) based on Au nanoparticle-decorated, thin graphitic petals. The petals were grown on Si substrates by microwave plasma chemical vapor deposition without catalyst, followed by Au nanoparticle decoration on the oxygen plasma-treated petals by electrodeposition. The substrates possess high surface area and sharp nanoscale features that enable high SERS sensitivity to detect 1× 10 -7 M rhodamine 6G in methanol solution. The obtained SERS enhancement is comparable to the best values reported in the literature and is determined to result from high surface area and increased density of Au nanoparticles on the petal surfaces.

Original languageEnglish (US)
Article number133108
JournalApplied Physics Letters
Volume97
Issue number13
DOIs
StatePublished - Sep 27 2010
Externally publishedYes

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petals
Raman spectroscopy
nanoparticles
Raman spectra
oxygen plasma
rhodamine
electrodeposition
methyl alcohol
vapor deposition
microwaves
catalysts
augmentation
sensitivity

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Au nanoparticles on graphitic petal arrays for surface-enhanced Raman spectroscopy. / Rout, Chandra Sekhar; Kumar, Anurag; Xiong, Guoping; Irudayaraj, Joseph; Fisher, Timothy S.

In: Applied Physics Letters, Vol. 97, No. 13, 133108, 27.09.2010.

Research output: Contribution to journalArticle

Rout, Chandra Sekhar ; Kumar, Anurag ; Xiong, Guoping ; Irudayaraj, Joseph ; Fisher, Timothy S. / Au nanoparticles on graphitic petal arrays for surface-enhanced Raman spectroscopy. In: Applied Physics Letters. 2010 ; Vol. 97, No. 13.
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