, Volume 6, Issue 2, pp 201–206 | Cite as

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

  • Wen-Chi Lin
  • Lu-Shing Liao
  • Yi-Hui Chen
  • Hung-Chun Chang
  • Din Ping Tsai
  • Hai-Pang ChiangEmail author


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.


Surface-enhanced Raman scattering (SERS) Nanosphere lithography (NSL) Silver film over nanospheres (AgFON) Enhanced factor (EF) Finite-difference time-domain (FDTD) 



H.-P. Chiang acknowledges financial support from Center for Marine Bioenvironment and Biotechnology, National Taiwan Ocean University and the National Science Council of ROC under grant number NSC 97-2112-M-019-001-MY3.


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Wen-Chi Lin
    • 1
  • Lu-Shing Liao
    • 1
  • Yi-Hui Chen
    • 2
  • Hung-Chun Chang
    • 2
  • Din Ping Tsai
    • 3
    • 4
  • Hai-Pang Chiang
    • 1
    • 4
    • 5
    Email author
  1. 1.Institute of Optoelectronic SciencesNational Taiwan Ocean UniversityKeelungRepublic of China
  2. 2.Graduate Institute of Photonics and Optoelectronics, and Department of Electrical EngineeringNational Taiwan UniversityTaipeiRepublic of China
  3. 3.Department of PhysicsNational Taiwan UniversityTaipeiRepublic of China
  4. 4.Instrument Technology Research CenterNational Applied Research LaboratoriesHsinchuRepublic of China
  5. 5.Institute of PhysicsAcademia SinicaTaipeiRepublic of China

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