Individual Ag Nanowire Dimer for Surface-Enhanced Raman Scattering View Full Text


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Article Info

DATE

2011-08-06

AUTHORS

ChaoLing Du, YuMeng You, Tao Chen, Yan Zhu, HaiLong Hu, DaNing Shi, HongYu Chen, ZeXiang Shen

ABSTRACT

We have investigated the polarization-dependent surface-enhanced Raman scattering (SERS) of an individual Ag nanowire (AgNW) dimer, which contains two parallel closely packed AgNWs with very different lengths. Similar cos2θ dependence of signal intensities with respect to the polarization angle θ of the incident laser was observed from the dimeric part and the parts of the body as well as the tip of the longer AgNW. The dimeric part was demonstrated to exhibit the strongest SERS effect. The results agree well with our numerical simulations of the electric field distributions using finite element method. The SERS enhancement mechanisms at different parts of the dimer were also discussed which are different in origin. More... »

PAGES

761

References to SciGraph publications

  • 2007-11. Nano-optics from sensing to waveguiding in NATURE PHOTONICS
  • Identifiers

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    http://scigraph.springernature.com/pub.10.1007/s11468-011-9261-0

    DOI

    http://dx.doi.org/10.1007/s11468-011-9261-0

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