Spectral shapes of surface-enhanced resonance Raman scattering sensitive to the refractive index of media around single Ag nanoaggregates

Yoshida, Ken-ichi; Itoh, Tamitake; Biju, Vasudevanpillai; Ishikawa, Mitsuru; Ozaki, Yukihiro
December 2009
Applied Physics Letters;12/28/2009, Vol. 95 Issue 26, p263104
Academic Journal
We found large spectral changes in surface-enhanced resonance Raman scattering (SERRS) with increasing refractive index of media around single Ag nanoaggregates. We analyzed relationship between the spectral changes in SERRS and those in plasma (plasmon) resonance based on the twofold electromagnetic (EM) enhancement theory. The analysis revealed that the changes in SERRS spectra are induced by changes in spectral shapes of twofold EM enhancement factors, which arise from coupling of plasma resonance with both incident and Raman scattering light.


Related Articles

  • Enhancement of Alq3 fluorescence by nanotextured silver films deposited on porous alumina substrates. Wang, Ziyao; Chen, Zhijian; Lan, Zhihao; Zhai, Xiaofeng; Du, Weimin; Gong, Qihuang // Applied Physics Letters;4/9/2007, Vol. 90 Issue 15, p151119 

    Enhanced photoluminescence was found in tris-8-hydroxyquinoline aluminum deposited onto nanotextured silver films with porous alumina substrates. The surface-enhanced Raman signals and shortened lifetimes suggested the presence of enhanced local electromagnetic field due to the plasmon resonance...

  • Distribution of the Field of Whispering-Gallery Modes in a Radially Nonuniform Two-Layer Cylindrical Dielectric Resonator. Prokopenko, Yu V.; Filippov, Yu. F.; Shipilova, I. A. // Radiophysics & Quantum Electronics;Jul2008, Vol. 51 Issue 7, p561 

    We study eigenmodes of a radially nonuniform two-layer cylindrical dielectric resonator bounded by two perfectly conducting planes at its ends. Formulas for the electromagnetic-field components of the modes and the characteristic equation of the resonator made of anisotropic dielectrics and...

  • Tunable and augmented plasmon resonances of Au/SiO2/Au nanodisks. Su, K. H.; Wei, Q. H.; Zhang, X. // Applied Physics Letters;2/6/2006, Vol. 88 Issue 6, p063118 

    The plasmon resonance of Au/SiO2 multilayered nanodisks was studied using light scattering spectroscopy and numerical calculations. Compared to single layered Au nanodisks, multilayered nanodisks exhibit several distinctive properties including significantly enhanced plasmon resonances and...

  • Plasmonic structure and electromagnetic field enhancements in the metallic nanoparticle-film system. Nordlander, P.; Le, F. // Applied Physics B: Lasers & Optics;Jul2006, Vol. 84 Issue 1/2, p35 

    We investigate the plasmonic structure of a metallic nanoparticle near a metallic thin film. We show that in the thin film limit, a virtual plasmon resonance composed of delocalized thin film plasmons is induced. We investigate how the physical properties of the virtual state depend on...

  • Low-frequency isotropic and anisotropic Raman spectra of aromatic liquids. Heisler, Ismael A.; Meech, Stephen R. // Journal of Chemical Physics;5/7/2010, Vol. 132 Issue 17, p174503 

    The Raman spectra below 300 wavenumbers of six different aromatic molecular liquids have been measured with a time and polarization resolved optical Kerr effect technique. The isotropic and anisotropic contributions were determined to yield the complete third order response, and thus a more...

  • Phase propagation of localized surface plasmons probed by time-resolved photoemission electron microscopy. Bauer, M.; Wiemann, C.; Lange, J.; Bayer, D.; Rohmer, M.; Aeschlimann, M. // Applied Physics A: Materials Science & Processing;Aug2007, Vol. 88 Issue 3, p473 

    In combining time-resolved two-photon photoemission (TR-2PPE) and photoemission electron microscopy (PEEM) the ultra-fast dynamics of collective electron excitations in silver nanoparticles (localized surface plasmons – LSPs) is probed at fs and nm resolution. Here we demonstrate that the...

  • Optical Fiber-Based Surface-Enhanced Raman Scattering Sensor Using Au Nanovoid Arrays. Chang, Shih-Hsin; Nyagilo, James; Wu, Jiaqi; Hao, Yaowu; Davé, Digant // Plasmonics;Sep2012, Vol. 7 Issue 3, p501 

    Plasmonic properties of gold nanovoid array substrates for fiber-based surface-enhanced Raman scattering (SERS) sensing are studied numerically and experimentally. In the nanovoid arrays, each void has openings on both sides, bottom hole facing the fiber tip for introducing incident light and...

  • Near-field Coupling Effect between Individual Au Nanospheres and their Supporting SiO2/Si Substrate. Chao Du; Yu You; Johnson, Kasim; Hai Hu; Xue Zhang; Ze Shen // Plasmonics;Jun2010, Vol. 5 Issue 2, p105 

    We studied the far-field optical reflection contrast spectroscopy (FORCS) properties of the following system: individual Au nanospheres (radius R) immobilized above Si substrate with different thicknesses ( d) SiO2 between them. We found that peaks in the FORCS red-shift exponentially with d...

  • Nanoplasmonics in field-enhanced spectroscopy. Aizpurua, Javier // AIP Conference Proceedings;10/7/2010, Vol. 1291 Issue 1, p5 

    We study theoretically the role of surface plasmons in optical nanoantennas to enhance nanoscale local fields. The activation of localized surface plasmon polaritons allows for performing very effective field-enhanced vibrational spectroscopy such as in Surface Enhanced Raman Spectroscopy (SERS)...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics