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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 5
BKCSDE 33(5)
May 20, 2012

Title	Tip-Enhanced Raman Scattering with a Nanoparticle-Functionalized Probe
Author	Chan-Gyu Park, Ju-Young Kim, Eunbyoul Lee, Han-Kyu Choi, Won-Hwa Park, Jinwook Kim, Zee Hwan Kim*
Keywords	Plasmons, Nanoparticles, Raman scattering
Abstract	We carried out the tip-enhanced Raman scattering (TERS) with a tip that is functionalized with a Aunanoparticle (AuNP, with a diameter of 250 nm). The AuNP tip is fabricated by a direct mechanical pickup of a AuNP from a flat substrate, and the TERS signal from the AuNP tip - organic monolayer - Au thin film (thickness of 10 nm) is recorded. We find that such a AuNP-tip interacting with a thin film routinely yields signal enhancement larger than ~104, which is sufficient not only for local (with detection area of ~200 nm2) Raman spectroscopy, but also the nanometric imaging of organic monolayers within a reasonable acquisition time (~20 minutes/image).
Page	1748 - 1752
Full Text	PDF

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