Near-field polarization effects in molecular-motion-induced photochemical imaging

Christophe Hubert*, Renaud Bachelot, Jérôme Plain, Sergeï Kostcheev, Gilles Lerondel, Mathieu Juan, Pascal Royer, Shengli Zou, George C. Schatz, Gary P. Wiederrecht, Stephen K. Gray

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    45 Citations (Scopus)


    We demonstrate near-field polarization-sensitive photochemical imaging of the optical near fields produced by metal nanostructures under a variety of illumination conditions. The method relies on the optically induced vectorial molecular mass transport of a light-sensitive polymer. The experimental and theoretical results clearly show that this method can map the three spatial components of the optical near field of complex metal nanostructures. The method was applied to map the electromagnetic near field of silver bowtie nanostructures. In particular, we find that longitudinally polarized plasmons are confined at the top of the metallic structures. Furthermore, the intricate optical near fields in the polymer lead to molecular trapping regions at intensity minima.

    Original languageEnglish
    Pages (from-to)4111-4116
    Number of pages6
    JournalJournal of Physical Chemistry C
    Issue number11
    Publication statusPublished - 20 Mar 2008


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