Electron energy loss spectroscopy of a chiral plasmonic structure

Paterson, G. W. , Karimullah, A. , Williamson, S. D. R., Kadodwala, M. and MacLaren, D. A. (2015) Electron energy loss spectroscopy of a chiral plasmonic structure. Journal of Physics: Conference Series, 644(1), 012005. (doi: 10.1088/1742-6596/644/1/012005)

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A detailed analysis of the plasmonic excitations within a nanopatterned gold chiral biosensor element, measured by scanning transmission electron microscopy electron energy loss spectroscopy, is presented. We discuss aspects of data acquisition, processing, analysis and simulation. The localised surface plasmonic resonance modes in the structure are extracted using non-negative matrix factorisation and we use simulations to correlate notable deviations from the idealised spectrum to nanometric fabrication imperfections. The methodology presented has wide applicability to a variety of metamaterials.

Item Type:Articles
Additional Information:Electron Microscopy and Analysis Group Conference (EMAG2015), Manchester, UK, 29 June-2 July 2015
Keywords:plasmonic, chiral, metamaterial, STEM, EELS, electron energy loss spectroscopy, machine learning, deconvolution, biosensor
Glasgow Author(s) Enlighten ID:Karimullah, Dr Affar and Paterson, Dr Gary and Kadodwala, Professor Malcolm and MacLaren, Professor Donald
Authors: Paterson, G. W., Karimullah, A., Williamson, S. D. R., Kadodwala, M., and MacLaren, D. A.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Group:Materials Science and Condensed Matter Physics
Journal Name:Journal of Physics: Conference Series
Publisher:Institute of Physics Publishing Ltd.
ISSN (Online):1742-6596
Copyright Holders:Copyright © 2015 The Authors
Related URLs:
Data DOI:10.5525/gla.researchdata.195

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
631041New directions in materials characterisation using vortex electron microscopy and spectroscopyDonald MaclarenEngineering & Physical Sciences Research Council (EPSRC)EP/L001969/1S&E P&A - PHYSICS & ASTRONOMY