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Proceedings Article

Taking cascaded plasmonic field enhancement to the ultimate limit in silver nanoparticle dimers

[+] Author Affiliations
S. Toroghi, P. G. Kik

CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)

Proc. SPIE 8457, Plasmonics: Metallic Nanostructures and Their Optical Properties X, 84570D (October 9, 2012); doi:10.1117/12.930333
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From Conference Volume 8457

  • Plasmonics: Metallic Nanostructures and Their Optical Properties X
  • Mark I. Stockman
  • San Diego, California, USA | August 12, 2012

abstract

Cascaded optical field enhancement in coupled plasmonic nanostructures has attracted significant attention because of field enhancement factors that dramatically exceed those observed in isolated nanostructures. While previous studies demonstrated the existence of cascaded enhancement, little work has been done to identify the requirements for achieving maximum field enhancement. Here, we investigate cascaded field enhancement in silver nanosphere dimers as a function of volume ratio and center-to-center separation, and show the requirements for achieving the ultimate cascading limit in nanoparticle dimers. We observe field enhancements that are a factor 75 larger than observed in isolated silver nanoparticles. © (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

S. Toroghi and P. G. Kik
" Taking cascaded plasmonic field enhancement to the ultimate limit in silver nanoparticle dimers ", Proc. SPIE 8457, Plasmonics: Metallic Nanostructures and Their Optical Properties X, 84570D (October 9, 2012); doi:10.1117/12.930333; http://dx.doi.org/10.1117/12.930333


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