Clark, A.W., Glidle, A., Cumming, D.R.S., and Cooper, J.M. (2008) Nanophotonic split-ring resonators as dichroics for molecular spectroscopy. Applied Physics Letters, 93 (2). 023121. ISSN 0003-6951 (doi:10.1063/1.2956389)
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We describe the design and fabrication of nanostructured silver split-ring resonators and demonstrate their application as dichroic sensors for multipurpose visible wavelength molecular spectroscopy. By producing arrays of these identical nanostructures, with critical dimensions of 30-150 nm, we demonstrate the controllable generation of plasmonic resonances at two common visible laser wavelengths, produced as a consequence of the polarization of the light with respect to structural geometry. We show the application of these devices in surface enhanced Raman spectroscopy, using their dichroic properties to perform molecular sensing of a self-assembled monolayer of 2-mercaptopyridine at both 532 and 633 nm. (C) 2008 American Institute of Physics
|Glasgow Author(s):||Cumming, Prof David and Cooper, Prof Jonathan and Clark, Dr Alasdair and Glidle, Dr Andrew|
|Authors:||Clark, A.W., Glidle, A., Cumming, D.R.S., and Cooper, J.M.|
|College/School:||College of Science and Engineering > School of Engineering > Biomedical Engineering|
College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
|Journal Name:||Applied Physics Letters|