Size Dependence of Nanoparticle-SERS Enhancement from Silver Film over Nanosphere (AgFON) Substrate

被引：82

作者：

Lin, Wen-Chi ^{[1
]}

Liao, Lu-Shing ^{[1
]}

Chen, Yi-Hui ^{[2
,3
]}

Chang, Hung-Chun ^{[2
,3
]}

Tsai, Din Ping ^{[4
,5
]}

Chiang, Hai-Pang ^{[1
,5
,6
]}

机构：

[1] Natl Taiwan Ocean Univ, Inst Optoelect Sci, Keelung 202, Taiwan

[2] Natl Taiwan Univ, Grad Inst Photon & Optoelect, Taipei 10764, Taiwan

[3] Natl Taiwan Univ, Dept Elect Engn, Taipei 10764, Taiwan

[4] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan

[5] Natl Appl Res Labs, Instrument Technol Res Ctr, Hsinchu, Taiwan

[6] Acad Sinica, Inst Phys, Taipei, Taiwan

来源：

PLASMONICS | 2011年 / 6卷 / 02期

关键词：

Surface-enhanced Raman scattering (SERS); Nanosphere lithography (NSL); Silver film over; POLYCYCLIC AROMATIC-HYDROCARBONS; NORMAL-MODE ANALYSIS; METAL NANOPARTICLES; FT-RAMAN; SURFACE; LITHOGRAPHY; EXCITATIONS; ARRAYS; IR;

D O I：

10.1007/s11468-010-9188-x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：201 / 206

页数：6

共 25 条

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