Remote Sensing by Plasmonic Transport
- 2 July 2012
- journal article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 134 (28), 11384-11387
- https://doi.org/10.1021/ja3046662
Abstract
Arrays of periodically disposed silver nanowires embedded in alumina were shown to be capable of conducting plasmons excited by laser illuminating one end of the array to its opposite end where surface-enhanced Raman of molecules resident among the tips of the nanowires was excited. The SERS signals, in turn, excited plasmons which propagated back to the originally illuminated ends of the nanowires where they emitted light signals that were collected and spectroscopically dispersed, in essence creating a sensor capable of exciting and collecting SERS remotely. For nanowire arrays with interwire gaps of ∼11 nm and lengths of ∼3.3 μm (i.e., after a ∼6.6 μm round trip) the SERS signals obtained by remote sensing were rather strong, ∼5% the intensity of those obtained by exciting the molecules resident among the nanowire tips directly.This publication has 12 references indexed in Scilit:
- Ultrafast Plasmon Propagation in Nanowires Characterized by Far-Field Spectral InterferometryNano Letters, 2011
- Plasmonic Coupling of Bow Tie Antennas with Ag NanowireNano Letters, 2011
- Correlation between Incident and Emission Polarization in Nanowire Surface Plasmon WaveguidesNano Letters, 2010
- Remote-Excitation Surface-Enhanced Raman Scattering Using Propagating Ag Nanowire PlasmonsNano Letters, 2009
- Subdiffraction Limited, Remote Excitation of Surface Enhanced Raman ScatteringNano Letters, 2009
- Generation of single optical plasmons in metallic nanowires coupled to quantum dotsNature, 2007
- Nanoparticle-Mediated Coupling of Light into a NanowireNano Letters, 2007
- Observation of Plasmon Propagation, Redirection, and Fan-Out in Silver NanowiresNano Letters, 2006
- Silver Nanowires as Surface Plasmon ResonatorsPhysical Review Letters, 2005
- Unidirectional Plasmon Propagation in Metallic NanowiresThe Journal of Physical Chemistry B, 2000