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dc.contributor.authorKessentini, Sameh
dc.contributor.authorBarchiesi, Dominique
dc.contributor.authorD'Andrea, Cristiano
dc.contributor.authorToma, Andrea
dc.contributor.authorGuillot, Nicolas
dc.contributor.authorDi Fabrizio, Enzo M.
dc.contributor.authorFazio, Barbara
dc.contributor.authorMaragó, Onofrio M.
dc.contributor.authorGucciardi, Pietro Giuseppe
dc.contributor.authorLamy De La Chapelle, Marc L.
dc.date.accessioned2015-08-03T11:47:28Z
dc.date.available2015-08-03T11:47:28Z
dc.date.issued2014-02-13
dc.identifier.issn19327447
dc.identifier.doi10.1021/jp409844y
dc.identifier.urihttp://hdl.handle.net/10754/563393
dc.description.abstractWe focus on improving the surface-enhanced Raman scattering (SERS) of dimer nanoantenna by tailoring the shape of the coupled nanoantennas extremities from rounded to straight or slanted ones. A numerical model based on the discrete dipole approximation method-taking into account periodicity, adhesion layer, and roughness-is first validated by comparison with localized surface plasmon resonance (LSPR) and SERS experiments on round-edged dimer nanoantennas and then used to investigate the effect of the straight or slanted gap in the dimer antenna. Simulations show that both LSPR and SERS can be tuned by changing the gap slanting angle. The SERS enhancement factor can also be improved by 2 orders of magnitude compared to the one reached using a rounded gap. Therefore, the slanting angle can be used as a new control parameter in the design of SERS substrates to guarantee stronger field confinement and higher sensitivity, especially as its feasibility is demonstrated. © 2014 American Chemical Society.
dc.description.sponsorshipThe authors thank the Nanoantenna European Project (FP7 Health-F5-2009-241818), the Region Champagne-Ardennes, the Conseil Regional de l'Aube, and MIUR (Project PRIN 2008J858Y7 and Programma Operativo Nazionale Ricerca e Competitivita 2007-2013, PON01_01322 PANREX) for financial support.
dc.publisherAmerican Chemical Society (ACS)
dc.titleGold dimer nanoantenna with slanted gap for tunable LSPR and improved SERS
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentMaterials Science and Engineering Program
dc.identifier.journalThe Journal of Physical Chemistry C
dc.contributor.institutionFaculté des Sciences de Sfax, Sfax, Tunisia
dc.contributor.institutionGAMMA3 Project (UTT-INRIA), University of Technology of Troyes, Troyes, France
dc.contributor.institutionIPCF-CNR, Istituto per i Processi Chimico-Fisici, Messina, Italy
dc.contributor.institutionNanostructures Department, Istituto Italiano di Tecnologia, Genova, Italy
dc.contributor.institutionLaboratoire CSPBAT, CNRS (UMR 7244), Université Paris 13, Bobigny, France
dc.contributor.institutionBIONEM Lab, University of Magna Graecia, Catanzaro, Italy
kaust.personDi Fabrizio, Enzo M.


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