Study of signal-to-background ratio of surface-enhanced Raman scattering: Dependences on excitation wavelength and hot-spot gap

Mykhaylo M. Dvoynenko; Huai Hsien Wang; Hui-Hsin Hsiao; Yuh Lin Wang; Juen Kai Wang

Study of signal-to-background ratio of surface-enhanced Raman scattering: Dependences on excitation wavelength and hot-spot gap

Mykhaylo M. Dvoynenko, Huai Hsien Wang, Hui-Hsin Hsiao, Yuh Lin Wang, Juen Kai Wang

Graduate Institute of Biomedical Optomechatronics

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

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.

Original language	English
Journal	Journal of Physical Chemistry C
Publication status	Published - Nov 1 2017

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Dvoynenko, M. M., Wang, H. H., Hsiao, H-H., Wang, Y. L., & Wang, J. K. (2017). Study of signal-to-background ratio of surface-enhanced Raman scattering: Dependences on excitation wavelength and hot-spot gap. Journal of Physical Chemistry C.

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title = "Study of signal-to-background ratio of surface-enhanced Raman scattering: Dependences on excitation wavelength and hot-spot gap",

abstract = "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.",

author = "Dvoynenko, {Mykhaylo M.} and Wang, {Huai Hsien} and Hui-Hsin Hsiao and Wang, {Yuh Lin} and Wang, {Juen Kai}",

year = "2017",

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journal = "Journal of Physical Chemistry C",

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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 -