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Magneto-optical plasmonic heterostructure with ultranarrow resonance for sensing applications

Currently, sensors invade into our everyday life to bring higher life standards, excellent medical diagnostic and efficient security. Plasmonic biosensors demonstrate an outstanding performance ranking themselves among best candidates for different applications. However, their sensitivity is still l...

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Autores principales: Ignatyeva, Daria O., Knyazev, Grigory A., Kapralov, Pavel O., Dietler, Giovanni, Sekatskii, Sergey K., Belotelov, Vladimir I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4910117/
https://www.ncbi.nlm.nih.gov/pubmed/27306301
http://dx.doi.org/10.1038/srep28077
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author Ignatyeva, Daria O.
Knyazev, Grigory A.
Kapralov, Pavel O.
Dietler, Giovanni
Sekatskii, Sergey K.
Belotelov, Vladimir I.
author_facet Ignatyeva, Daria O.
Knyazev, Grigory A.
Kapralov, Pavel O.
Dietler, Giovanni
Sekatskii, Sergey K.
Belotelov, Vladimir I.
author_sort Ignatyeva, Daria O.
collection PubMed
description Currently, sensors invade into our everyday life to bring higher life standards, excellent medical diagnostic and efficient security. Plasmonic biosensors demonstrate an outstanding performance ranking themselves among best candidates for different applications. However, their sensitivity is still limited that prevents further expansion. Here we present a novel concept of magnetoplasmonic sensor with ultranarrow resonances and high sensitivity. Our approach is based on the combination of a specially designed one-dimensional photonic crystal and a ferromagnetic layer to realize ultralong-range propagating magnetoplasmons and to detect alteration of the environment refractive index via observation of the modifications in the Transversal Magnetooptical Kerr Effect spectrum. The fabrication of such a structure is relatively easy in comparison with e.g. nanopatterned samples. The fabricated heterostructure shows extremely sharp (angular width of 0.06°) surface plasmon resonance and even sharper magnetoplasmonic resonance (angular width is 0.02°). It corresponds to the propagation length as large as 106 μm which is record for magnetoplasmons and promising for magneto-optical interferometry and plasmonic circuitry as well as magnetic field sensing. The magnitude of the Kerr effect of 11% is achieved which allows for detection limit of 1∙10(−6). The prospects of further increase of the sensitivity of this approach are discussed.
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spelling pubmed-49101172016-06-16 Magneto-optical plasmonic heterostructure with ultranarrow resonance for sensing applications Ignatyeva, Daria O. Knyazev, Grigory A. Kapralov, Pavel O. Dietler, Giovanni Sekatskii, Sergey K. Belotelov, Vladimir I. Sci Rep Article Currently, sensors invade into our everyday life to bring higher life standards, excellent medical diagnostic and efficient security. Plasmonic biosensors demonstrate an outstanding performance ranking themselves among best candidates for different applications. However, their sensitivity is still limited that prevents further expansion. Here we present a novel concept of magnetoplasmonic sensor with ultranarrow resonances and high sensitivity. Our approach is based on the combination of a specially designed one-dimensional photonic crystal and a ferromagnetic layer to realize ultralong-range propagating magnetoplasmons and to detect alteration of the environment refractive index via observation of the modifications in the Transversal Magnetooptical Kerr Effect spectrum. The fabrication of such a structure is relatively easy in comparison with e.g. nanopatterned samples. The fabricated heterostructure shows extremely sharp (angular width of 0.06°) surface plasmon resonance and even sharper magnetoplasmonic resonance (angular width is 0.02°). It corresponds to the propagation length as large as 106 μm which is record for magnetoplasmons and promising for magneto-optical interferometry and plasmonic circuitry as well as magnetic field sensing. The magnitude of the Kerr effect of 11% is achieved which allows for detection limit of 1∙10(−6). The prospects of further increase of the sensitivity of this approach are discussed. Nature Publishing Group 2016-06-16 /pmc/articles/PMC4910117/ /pubmed/27306301 http://dx.doi.org/10.1038/srep28077 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Ignatyeva, Daria O.
Knyazev, Grigory A.
Kapralov, Pavel O.
Dietler, Giovanni
Sekatskii, Sergey K.
Belotelov, Vladimir I.
Magneto-optical plasmonic heterostructure with ultranarrow resonance for sensing applications
title Magneto-optical plasmonic heterostructure with ultranarrow resonance for sensing applications
title_full Magneto-optical plasmonic heterostructure with ultranarrow resonance for sensing applications
title_fullStr Magneto-optical plasmonic heterostructure with ultranarrow resonance for sensing applications
title_full_unstemmed Magneto-optical plasmonic heterostructure with ultranarrow resonance for sensing applications
title_short Magneto-optical plasmonic heterostructure with ultranarrow resonance for sensing applications
title_sort magneto-optical plasmonic heterostructure with ultranarrow resonance for sensing applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4910117/
https://www.ncbi.nlm.nih.gov/pubmed/27306301
http://dx.doi.org/10.1038/srep28077
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