Tip-enhanced Raman scattering from bridged nanocones

Satish Rao, Mikko J. Huttunen, Juha M. Kontio, Jouni Mäkitalo, Milla-Riina Viljanen, Janne Simonen, Martti Kauranen, Dmitri Petrov

    Research output: Contribution to journalArticleScientificpeer-review

    13 Citations (Scopus)
    36 Downloads (Pure)

    Abstract

    We present two silver nanocones separated by 450 nm, well beyond the typical gap spacing of coupled nanoantennas, and connected by a metal bridge to facilitate plasmonic coupling between them. The tip-enhanced Raman scattering from crystal violet molecules is found to be almost an order of magnitude higher from the bridged cones than from individual cones. This result is supported by local-field calculations of the two types of structures. The bridged nanocones are easily fabricated by a nanoimprint-based process, thus offering a faster and simpler approach compared to other fabrication techniques.
    Translated title of the contributionTip-enhanced Raman scattering from bridged nanocones
    Original languageEnglish
    Pages (from-to)23790-23795
    JournalOptics Express
    Volume18
    Issue number23
    DOIs
    Publication statusPublished - 2010
    Publication typeA1 Journal article-refereed

    Publication forum classification

    • Publication forum level 2

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