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Title: Size dependence of Nanoparticle-SERS Enhancement from Silver Film over Nanosphere (AgFON) Substrate
Authors: Wen-Chi Lin
Lu-Shing Liao
Yi-Hui Chen
Hung-Chun Chang
Din Ping Tsai
Hai-Pang Chiang
Contributors: 國立臺灣海洋大學:光電科學研究所
Keywords: Finite-difference time-domain (FDTD)
Surface-enhanced Raman scattering (SERS)
Nanosphere lithography (NSL)
Silver film over nanospheres (AgFON)
Enhanced factor (EF)
Date: 2011
Issue Date: 2017-02-10T01:14:02Z
Publisher: Plasmonics
Abstract: Abstract: The dependence of nanoparticle size on surface-enhanced Raman scattering (SERS) from silver film over nanospheres substrate is studied. For a range of nanosphere sizes from 430 to 1,500 nm, optimum SERS signal is obtained with a nanosphere size of 1,000 nm at an excitation wavelength of 532 nm. We have clarified the physical origin of this optimization in an unambiguious way as due to resonant plasmonic excitations from 3D finite-difference time-domain simulations, as well as with the assistance of UV-visible reflectance spectrum.
Relation: 6(12)
Appears in Collections:[Institute of Optoelectronic Sciences] Periodical Articles

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