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Pàgina inicial > Articles > Articles publicats > Tuning the Plasmonic Response up : |
Data: | 2016 |
Resum: | 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. |
Ajuts: | 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 Ciencia e Innovación MAT2012-33330 Ministerio de Ciencia e Innovación MAT2014-51480-ERC |
Nota: | Article publicat sota la llicència AuthorChoice de l'American Chemical Society: https://pubs.acs.org/userimages/ContentEditor/1404932937291/authorchoice_form.pdf |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | AuAg ; Electron energy loss spectroscopy ; Hollow metal nanoparticles ; Label-free sensing ; Localized surface plasmon resonances |
Publicat a: | ACS Photonics, Vol. 3, Núm. 5 (May 2016) , p. 770-779, ISSN 2330-4022 |
10 p, 4.8 MB |