Magneto-Optical properties of noble-metal nanostructures: functional nanomaterials for bio sensing

Abstract Metallic nanostructures supporting Localized Surface Plasmon Resonances (LSPR) are characterized by their unique ability to control and manipulate light at the nanoscale. Noble metal nanostructures, such as gold nanostructures, are demonstrating to exhibit magneto-optic activity in the pres...

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Autores principales:	Maria Grazia Manera, Adriano Colombelli, Antonietta Taurino, Antonio Garcia Martin, Roberto Rella
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f9887d7a8e74479b9d1743f13ad9b250
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spelling	oai:doaj.org-article:f9887d7a8e74479b9d1743f13ad9b2502021-12-02T11:41:15ZMagneto-Optical properties of noble-metal nanostructures: functional nanomaterials for bio sensing10.1038/s41598-018-30862-32045-2322https://doaj.org/article/f9887d7a8e74479b9d1743f13ad9b2502018-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-30862-3https://doaj.org/toc/2045-2322Abstract Metallic nanostructures supporting Localized Surface Plasmon Resonances (LSPR) are characterized by their unique ability to control and manipulate light at the nanoscale. Noble metal nanostructures, such as gold nanostructures, are demonstrating to exhibit magneto-optic activity in the presence of modulated magnetic field of low intensity in transversal configuration (T-MOKE). Validation of experimental findings was achieved by numerical simulations based on Finite Element Method (FEM) techniques. The developed numerical models allowed studying the combination of the T-MOKE effect with the localized surface plasmon resonance of metal nanoparticles. Numerical optical and magneto-optical spectra provided a deep insight on the physical aspects behind the magneto-optical activity of metal nanostructures strictly related to direction of oscillations electrical dipoles generated in resonance conditions. Additionally the MO signal was characterized as a transducing signal for refractive index sensing in liquid conditions. The outcome is an increase in the limit of detection of magneto optical transducer with respect to traditional plasmonic sensors. A new strategy for magneto-plasmonic sensing based on the use of glass supported -Au nanostructures based on their MO properties has put forward.Maria Grazia ManeraAdriano ColombelliAntonietta TaurinoAntonio Garcia MartinRoberto RellaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-12 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Maria Grazia Manera Adriano Colombelli Antonietta Taurino Antonio Garcia Martin Roberto Rella Magneto-Optical properties of noble-metal nanostructures: functional nanomaterials for bio sensing
description	Abstract Metallic nanostructures supporting Localized Surface Plasmon Resonances (LSPR) are characterized by their unique ability to control and manipulate light at the nanoscale. Noble metal nanostructures, such as gold nanostructures, are demonstrating to exhibit magneto-optic activity in the presence of modulated magnetic field of low intensity in transversal configuration (T-MOKE). Validation of experimental findings was achieved by numerical simulations based on Finite Element Method (FEM) techniques. The developed numerical models allowed studying the combination of the T-MOKE effect with the localized surface plasmon resonance of metal nanoparticles. Numerical optical and magneto-optical spectra provided a deep insight on the physical aspects behind the magneto-optical activity of metal nanostructures strictly related to direction of oscillations electrical dipoles generated in resonance conditions. Additionally the MO signal was characterized as a transducing signal for refractive index sensing in liquid conditions. The outcome is an increase in the limit of detection of magneto optical transducer with respect to traditional plasmonic sensors. A new strategy for magneto-plasmonic sensing based on the use of glass supported -Au nanostructures based on their MO properties has put forward.
format	article
author	Maria Grazia Manera Adriano Colombelli Antonietta Taurino Antonio Garcia Martin Roberto Rella
author_facet	Maria Grazia Manera Adriano Colombelli Antonietta Taurino Antonio Garcia Martin Roberto Rella
author_sort	Maria Grazia Manera
title	Magneto-Optical properties of noble-metal nanostructures: functional nanomaterials for bio sensing
title_short	Magneto-Optical properties of noble-metal nanostructures: functional nanomaterials for bio sensing
title_full	Magneto-Optical properties of noble-metal nanostructures: functional nanomaterials for bio sensing
title_fullStr	Magneto-Optical properties of noble-metal nanostructures: functional nanomaterials for bio sensing
title_full_unstemmed	Magneto-Optical properties of noble-metal nanostructures: functional nanomaterials for bio sensing
title_sort	magneto-optical properties of noble-metal nanostructures: functional nanomaterials for bio sensing
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/f9887d7a8e74479b9d1743f13ad9b250
work_keys_str_mv	AT mariagraziamanera magnetoopticalpropertiesofnoblemetalnanostructuresfunctionalnanomaterialsforbiosensing AT adrianocolombelli magnetoopticalpropertiesofnoblemetalnanostructuresfunctionalnanomaterialsforbiosensing AT antoniettataurino magnetoopticalpropertiesofnoblemetalnanostructuresfunctionalnanomaterialsforbiosensing AT antoniogarciamartin magnetoopticalpropertiesofnoblemetalnanostructuresfunctionalnanomaterialsforbiosensing AT robertorella magnetoopticalpropertiesofnoblemetalnanostructuresfunctionalnanomaterialsforbiosensing
_version_	1718395439053537280

Magneto-Optical properties of noble-metal nanostructures: functional nanomaterials for bio sensing

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