Sensing electrochemical signals using a nitrogen-vacancy center in diamond
| Autor: | Jeronimo R. Maze, Hossein T. Dinani, Enrique Muñoz |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
concentration
Coherence time Materials science General Chemical Engineering Dephasing FOS: Physical sciences 02 engineering and technology Electrolyte engineering.material 01 natural sciences Molecular physics Article dephasing rate Ion lcsh:Chemistry nitrogen-vacancy sensor Electric field Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences General Materials Science 010306 general physics Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Diamond electrochemical 021001 nanoscience & nanotechnology Free induction decay lcsh:QD1-999 engineering Quantum Physics (quant-ph) 0210 nano-technology Nitrogen-vacancy center |
| Zdroj: | Nanomaterials Nanomaterials, Vol 11, Iss 358, p 358 (2021) Volume 11 Issue 2 |
| Popis: | Chemical sensors with high sensitivity that can be used in 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 to use an NV center to detect electrochemical signals emerging from an electrolyte solution, thus obtaining a concentration sensor. For this purpose, we propose to use the inhomogeneous dephasing rate of the electron spin of the NV center ($1/T^*_2$) 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 which 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 also be used to estimate the concentration of ions. 17 pages, 7 figures, comments are welcome |
| Databáze: | OpenAIRE |
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