Hollow metal nanostructures for enhanced plasmonics
(Conference Presentation)

Aziz Genç; Javier Patarroyo; Jordi Sancho-Parramon; Martial Duchamp; Edgar Gonzalez; Neus G. Bastus; Lothar Houben; Rafal Dunin-Borkowski; Victor F. Puntes; Jordi Arbiol

doi:10.1117/12.2211598

27 April 2016 Hollow metal nanostructures for enhanced plasmonics (Conference Presentation)

Aziz Genç, Javier Patarroyo, Jordi Sancho-Parramon, Martial Duchamp, Edgar Gonzalez, Neus G. Bastus, Lothar Houben, Rafal Dunin-Borkowski, Victor F. Puntes, Jordi Arbiol

Author Affiliations +

Proceedings Volume 9722, Colloidal Nanoparticles for Biomedical Applications XI; 972206 (2016) https://doi.org/10.1117/12.2211598
Event: SPIE BiOS, 2016, San Francisco, California, United States

Abstract

Complex metal nanoparticles offer a great playground for plasmonic nanoengineering, where it is possible to cover plasmon resonances from ultraviolet to near infrared by modifying the morphologies from solid nanocubes to nanoframes, multiwalled hollow nanoboxes or even nanotubes with hybrid (alternating solid and hollow) structures. We experimentally show that structural modifications, i.e. void size and final morphology, are the dominant determinants for the final plasmonic properties, while compositional variations allow us to get a fine tuning. EELS mappings of localized surface plasmon resonances (LSPRs) reveal an enhanced plasmon field inside the voids of hollow AuAg nanostructures along with a more homogeneous distributions of the plasmon fields around the nanostructures. With the present methodology and the appropriate samples we are able to compare the effects of hybridization at the nanoscale in hollow nanostructures. Boundary element method (BEM) simulations also reveal the effects of structural nanoengineering on plasmonic properties of hollow metal nanostructures. Possibility of tuning the LSPR properties of hollow metal nanostructures in a wide range of energy by modifying the void size/shell thickness is shown by BEM simulations, which reveals that void size is the dominant factor for tuning the LSPRs. As a proof of concept for enhanced plasmonic properties, we show effective label free sensing of bovine serum albumin (BSA) with some of our hollow nanostructures. In addition, the different plasmonic modes observed have also been studied and mapped in 3D.

Conference Presentation

Citation Download Citation

Aziz Genç, Javier Patarroyo, Jordi Sancho-Parramon, Martial Duchamp, Edgar Gonzalez, Neus G. Bastus, Lothar Houben, Rafal Dunin-Borkowski, Victor F. Puntes, and Jordi Arbiol "Hollow metal nanostructures for enhanced plasmonics (Conference Presentation)", Proc. SPIE 9722, Colloidal Nanoparticles for Biomedical Applications XI, 972206 (27 April 2016); https://doi.org/10.1117/12.2211598

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KEYWORDS

Nanostructures

Plasmonics

Metals

Plasmons

Nanoengineering

Solids

Nanoparticles

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