Graphene-assisted biosensing based on terahertz nanoslot antennas

We report on improvement of sensitivity for molecular detection utilizing terahertz time domain spectroscopy. Based on confining and enhancing electromagnetic field with metallic nanoslot antennas, we additionally employ monolayer graphene sheet whose edge and hydrophobic surface nature lead to incr...

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Detalles Bibliográficos
Autores principales: Choi, Geunchang, Hong, Sung Ju, Bahk, Young-Mi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6611908/
https://www.ncbi.nlm.nih.gov/pubmed/31278273
http://dx.doi.org/10.1038/s41598-019-46095-x
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author Choi, Geunchang
Hong, Sung Ju
Bahk, Young-Mi
author_facet Choi, Geunchang
Hong, Sung Ju
Bahk, Young-Mi
author_sort Choi, Geunchang
collection PubMed
description We report on improvement of sensitivity for molecular detection utilizing terahertz time domain spectroscopy. Based on confining and enhancing electromagnetic field with metallic nanoslot antennas, we additionally employ monolayer graphene sheet whose edge and hydrophobic surface nature lead to increase detecting performance. Terahertz transmittance in monolayer graphene/metallic nanoslot structure exhibits more unambiguous change after lactose molecules are attached, compared to that in metallic nanoslot structure without monolayer graphene. We attribute the prominent change to that more lactose molecules are guided inside/near the metal gap region due to edge and hydrophobic surface nature of monolayer graphene. This monolayer graphene/metallic nanoslot structure can be expanded in other organic or bio-molecular detection.
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spelling pubmed-66119082019-07-15 Graphene-assisted biosensing based on terahertz nanoslot antennas Choi, Geunchang Hong, Sung Ju Bahk, Young-Mi Sci Rep Article We report on improvement of sensitivity for molecular detection utilizing terahertz time domain spectroscopy. Based on confining and enhancing electromagnetic field with metallic nanoslot antennas, we additionally employ monolayer graphene sheet whose edge and hydrophobic surface nature lead to increase detecting performance. Terahertz transmittance in monolayer graphene/metallic nanoslot structure exhibits more unambiguous change after lactose molecules are attached, compared to that in metallic nanoslot structure without monolayer graphene. We attribute the prominent change to that more lactose molecules are guided inside/near the metal gap region due to edge and hydrophobic surface nature of monolayer graphene. This monolayer graphene/metallic nanoslot structure can be expanded in other organic or bio-molecular detection. Nature Publishing Group UK 2019-07-05 /pmc/articles/PMC6611908/ /pubmed/31278273 http://dx.doi.org/10.1038/s41598-019-46095-x Text en © The Author(s) 2019 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
Choi, Geunchang
Hong, Sung Ju
Bahk, Young-Mi
Graphene-assisted biosensing based on terahertz nanoslot antennas
title Graphene-assisted biosensing based on terahertz nanoslot antennas
title_full Graphene-assisted biosensing based on terahertz nanoslot antennas
title_fullStr Graphene-assisted biosensing based on terahertz nanoslot antennas
title_full_unstemmed Graphene-assisted biosensing based on terahertz nanoslot antennas
title_short Graphene-assisted biosensing based on terahertz nanoslot antennas
title_sort graphene-assisted biosensing based on terahertz nanoslot antennas
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6611908/
https://www.ncbi.nlm.nih.gov/pubmed/31278273
http://dx.doi.org/10.1038/s41598-019-46095-x
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