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Tuning the Plasmonic Response up : Hollow Cuboid Metal Nanostructures Genç, Aziz Patarroyo, Javier Sancho i Parramon, Jordi Arenal, Raúl Duchamp, Martial González, Edgar E. Henrard, Luc Bastús, Neus G. Dunin-Borkowski, Rafal E. Puntes, Víctor Arbiol i Cobos, Jordi AuAg Electron energy loss spectroscopy Hollow metal nanoparticles Label-free sensing Localized surface plasmon resonances Article publicat sota la llicència AuthorChoice de l'American Chemical Society: https://pubs.acs.org/userimages/ContentEditor/1404932937291/authorchoice_form.pdf We report the fine-tuning of the localized surface plasmon resonances (LSPRs) from ultraviolet to near-infrared by nanoengineering the metal nanoparticle morphologies from solid Ag nanocubes to hollow AuAg nanoboxes and AuAg nanoframes. Spatially resolved mapping of plasmon resonances by electron energy loss spectroscopy (EELS) revealed a homogeneous distribution of highly intense plasmon resonances around the hollow nanostructures and the interaction, that is, hybridization, of inner and outer plasmon fields for the nanoframe. Experimental findings are accurately correlated with the boundary element method (BEM) simulations demonstrating that the homogeneous distribution of the plasmon resonances is the key factor for their improved plasmonic properties. As a proof of concept for these enhanced plasmonic properties, we show the effective label free sensing of bovine serum albumin (BSA) of single-walled AuAg nanoboxes in comparison with solid Au nanoparticles, demonstrating their excellent performance for future biomedical applications. 2016 Article https://ddd.uab.cat/record/195333 urn:10.1021/acsphotonics.5b00667 urn:oai:ddd.uab.cat:195333 urn:scopus_id:84969793340 urn:articleid:23304022v3n5p770 urn:wos_id:000376333700008 urn:altmetric_id:6743858 urn:icn2uab:2107520 urn:oai:egreta.uab.cat:publications/8ae0a934-a52e-4e2d-8b05-7a4676d78bc1 eng Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1638 European Commission 604602 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-612 Ministerio de Economía y Competitividad MAT2012-33330 Ministerio de Economía y Competitividad MAT2014-51480-ERC ACS Photonics ; Vol. 3, Núm. 5 (May 2016), p. 770-779 open access Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets. https://rightsstatements.org/vocab/InC/1.0/ application/pdf