23 December 2013 Remote-excitation surface-enhanced Raman scattering with counter-propagating plasmons: silver nanowire-nanoparticle system
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Abstract
Surface-enhanced Raman scattering (SERS) has emerged as a powerful tool to probe molecules at nanoscale. By utilizing plasmon polaritons on metallic nanowires, remote-excitation SERS can be achieved. Enhancement and modulation of remote-SERS intensity are vital for nano-optical spectroscopy. Counter-propagating plasmons have been excited in a plasmonic nanowire-nanoparticle (NW-NP) system and further utilized to perform remote-excitation SERS. By using the polarization of counter-propagating fields, remote-SERS intensity from NW-NP hot-spot junction was enhanced and modulated. Such capabilities of counter-propagating plasmons to control optical fields and SERS intensity at NW-NP junction can have implications in nanowire photonics and nano-optical spectroscopy.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Arindam Dasgupta, Arindam Dasgupta, Danveer Singh, Danveer Singh, Shreyash Tandon, Shreyash Tandon, Ravi P. N. Tripathi, Ravi P. N. Tripathi, G. V. Pavan Kumar, G. V. Pavan Kumar, } "Remote-excitation surface-enhanced Raman scattering with counter-propagating plasmons: silver nanowire-nanoparticle system," Journal of Nanophotonics 8(1), 083899 (23 December 2013). https://doi.org/10.1117/1.JNP.8.083899 . Submission:
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