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Sensing Electrochemical Signals Using a Nitrogen-Vacancy Center in Diamond

Chemical sensors with high sensitivity that can be used under extreme conditions and can be miniaturized are of high interest in science and industry. The nitrogen-vacancy (NV) center in diamond is an ideal candidate as a nanosensor due to the long coherence time of its electron spin and its optical...

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Autores principales: Dinani, Hossein T., Muñoz, Enrique, Maze, Jeronimo R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7912762/
https://www.ncbi.nlm.nih.gov/pubmed/33535516
http://dx.doi.org/10.3390/nano11020358
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author Dinani, Hossein T.
Muñoz, Enrique
Maze, Jeronimo R.
author_facet Dinani, Hossein T.
Muñoz, Enrique
Maze, Jeronimo R.
author_sort Dinani, Hossein T.
collection PubMed
description Chemical sensors with high sensitivity that can be used under extreme conditions and can be miniaturized are of high interest in science and industry. The nitrogen-vacancy (NV) center in diamond is an ideal candidate as a nanosensor due to the long coherence time of its electron spin and its optical accessibility. In this theoretical work, we propose the use of an NV center to detect electrochemical signals emerging from an electrolyte solution, thus obtaining a concentration sensor. For this purpose, we propose the use of the inhomogeneous dephasing rate of the electron spin of the NV center ([Formula: see text]) as a signal. We show that for a range of mean ionic concentrations in the bulk of the electrolyte solution, the electric field fluctuations produced by the diffusional fluctuations in the local concentration of ions result in dephasing rates that can be inferred from free induction decay measurements. Moreover, we show that for a range of concentrations, the electric field generated at the position of the NV center can be used to estimate the concentration of ions.
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spelling pubmed-79127622021-02-28 Sensing Electrochemical Signals Using a Nitrogen-Vacancy Center in Diamond Dinani, Hossein T. Muñoz, Enrique Maze, Jeronimo R. Nanomaterials (Basel) Article Chemical sensors with high sensitivity that can be used under extreme conditions and can be miniaturized are of high interest in science and industry. The nitrogen-vacancy (NV) center in diamond is an ideal candidate as a nanosensor due to the long coherence time of its electron spin and its optical accessibility. In this theoretical work, we propose the use of an NV center to detect electrochemical signals emerging from an electrolyte solution, thus obtaining a concentration sensor. For this purpose, we propose the use of the inhomogeneous dephasing rate of the electron spin of the NV center ([Formula: see text]) as a signal. We show that for a range of mean ionic concentrations in the bulk of the electrolyte solution, the electric field fluctuations produced by the diffusional fluctuations in the local concentration of ions result in dephasing rates that can be inferred from free induction decay measurements. Moreover, we show that for a range of concentrations, the electric field generated at the position of the NV center can be used to estimate the concentration of ions. MDPI 2021-02-01 /pmc/articles/PMC7912762/ /pubmed/33535516 http://dx.doi.org/10.3390/nano11020358 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Dinani, Hossein T.
Muñoz, Enrique
Maze, Jeronimo R.
Sensing Electrochemical Signals Using a Nitrogen-Vacancy Center in Diamond
title Sensing Electrochemical Signals Using a Nitrogen-Vacancy Center in Diamond
title_full Sensing Electrochemical Signals Using a Nitrogen-Vacancy Center in Diamond
title_fullStr Sensing Electrochemical Signals Using a Nitrogen-Vacancy Center in Diamond
title_full_unstemmed Sensing Electrochemical Signals Using a Nitrogen-Vacancy Center in Diamond
title_short Sensing Electrochemical Signals Using a Nitrogen-Vacancy Center in Diamond
title_sort sensing electrochemical signals using a nitrogen-vacancy center in diamond
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7912762/
https://www.ncbi.nlm.nih.gov/pubmed/33535516
http://dx.doi.org/10.3390/nano11020358
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