Photonic spin Hall effect enabled refractive index sensor using weak measurements

In this work, we theoretically propose an optical biosensor (consists of a BK7 glass, a metal film, and a graphene sheet) based on photonic spin Hall effect (SHE). We establish a quantitative relationship between the spin-dependent shift in photonic SHE and the refractive index of sensing medium. It...

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Detalles Bibliográficos
Autores principales: Zhou, Xinxing, Sheng, Lijuan, Ling, Xiaohui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5775336/
https://www.ncbi.nlm.nih.gov/pubmed/29352177
http://dx.doi.org/10.1038/s41598-018-19713-3
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author Zhou, Xinxing
Sheng, Lijuan
Ling, Xiaohui
author_facet Zhou, Xinxing
Sheng, Lijuan
Ling, Xiaohui
author_sort Zhou, Xinxing
collection PubMed
description In this work, we theoretically propose an optical biosensor (consists of a BK7 glass, a metal film, and a graphene sheet) based on photonic spin Hall effect (SHE). We establish a quantitative relationship between the spin-dependent shift in photonic SHE and the refractive index of sensing medium. It is found that, by considering the surface plasmon resonance effect, the refractive index variations owing to the adsorption of biomolecules in sensing medium can effectively change the spin-dependent displacements. Remarkably, using the weak measurement method, this tiny spin-dependent shifts can be detected with a desirable accuracy so that the corresponding biomolecules concentration can be determined.
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spelling pubmed-57753362018-01-26 Photonic spin Hall effect enabled refractive index sensor using weak measurements Zhou, Xinxing Sheng, Lijuan Ling, Xiaohui Sci Rep Article In this work, we theoretically propose an optical biosensor (consists of a BK7 glass, a metal film, and a graphene sheet) based on photonic spin Hall effect (SHE). We establish a quantitative relationship between the spin-dependent shift in photonic SHE and the refractive index of sensing medium. It is found that, by considering the surface plasmon resonance effect, the refractive index variations owing to the adsorption of biomolecules in sensing medium can effectively change the spin-dependent displacements. Remarkably, using the weak measurement method, this tiny spin-dependent shifts can be detected with a desirable accuracy so that the corresponding biomolecules concentration can be determined. Nature Publishing Group UK 2018-01-19 /pmc/articles/PMC5775336/ /pubmed/29352177 http://dx.doi.org/10.1038/s41598-018-19713-3 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Zhou, Xinxing
Sheng, Lijuan
Ling, Xiaohui
Photonic spin Hall effect enabled refractive index sensor using weak measurements
title Photonic spin Hall effect enabled refractive index sensor using weak measurements
title_full Photonic spin Hall effect enabled refractive index sensor using weak measurements
title_fullStr Photonic spin Hall effect enabled refractive index sensor using weak measurements
title_full_unstemmed Photonic spin Hall effect enabled refractive index sensor using weak measurements
title_short Photonic spin Hall effect enabled refractive index sensor using weak measurements
title_sort photonic spin hall effect enabled refractive index sensor using weak measurements
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5775336/
https://www.ncbi.nlm.nih.gov/pubmed/29352177
http://dx.doi.org/10.1038/s41598-018-19713-3
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AT lingxiaohui photonicspinhalleffectenabledrefractiveindexsensorusingweakmeasurements

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