Abstract
Original language | English |
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Journal | Journal of Physical Chemistry C |
Publication status | Published - Nov 1 2017 |
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Study of signal-to-background ratio of surface-enhanced Raman scattering: Dependences on excitation wavelength and hot-spot gap. / Dvoynenko, Mykhaylo M.; Wang, Huai Hsien; Hsiao, Hui-Hsin; Wang, Yuh Lin; Wang, Juen Kai.
In: Journal of Physical Chemistry C, 01.11.2017.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Study of signal-to-background ratio of surface-enhanced Raman scattering: Dependences on excitation wavelength and hot-spot gap
AU - Dvoynenko, Mykhaylo M.
AU - Wang, Huai Hsien
AU - Hsiao, Hui-Hsin
AU - Wang, Yuh Lin
AU - Wang, Juen Kai
PY - 2017/11/1
Y1 - 2017/11/1
N2 - Signal-to-background ratio of surface-enhanced Raman scattering (SERS) plays an important role in the analytic applications of SERS. Its dependences on excitation wavelength and gap between metal particles were studied theoretically and experimentally. We show that this ratio is higher at smaller gaps for the same excitation wavelength and is higher for the wavelengths having higher values of the absolute values of the dielectric function of the metal. This study thus results in design guidelines in the fabrication of SERS-active substrates with high signal-to-background ratio.
AB - Signal-to-background ratio of surface-enhanced Raman scattering (SERS) plays an important role in the analytic applications of SERS. Its dependences on excitation wavelength and gap between metal particles were studied theoretically and experimentally. We show that this ratio is higher at smaller gaps for the same excitation wavelength and is higher for the wavelengths having higher values of the absolute values of the dielectric function of the metal. This study thus results in design guidelines in the fabrication of SERS-active substrates with high signal-to-background ratio.
M3 - Article
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
ER -