Nanophotonic split-ring resonators as dichroics for molecular spectroscopy

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. (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

Item Type:Articles
Glasgow Author(s) Enlighten ID:Cumming, Professor David and Glidle, Dr Andrew and Cooper, Professor Jonathan and Clark, Professor Alasdair
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
ISSN (Online):1077-3118
Published Online:16 July 2008

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
387921Extreme sensitivity by engineering plasmon resonance sensorsDavid CummingEngineering & Physical Sciences Research Council (EPSRC)EP/C509927/1Electronic and Nanoscale Engineering