Monitoring spin coherence of single nitrogen-vacancy centers in nanodiamonds during pH changes in aqueous buffer solutions

Masazumi Fujiwara; Ryuta Tsukahara; Yoshihiko Sera; Hiroshi Yukawa; Yoshinobu Baba; Shinichi Shikata; Hideki Hashimoto

doi:10.1039/c9ra02282a

Monitoring spin coherence of single nitrogen-vacancy centers in nanodiamonds during pH changes in aqueous buffer solutions

Masazumi Fujiwara, Ryuta Tsukahara, Yoshihiko Sera, Hiroshi Yukawa, Yoshinobu Baba, Shinichi Shikata, Hideki Hashimoto

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

We report on the sensing stability of quantum nanosensors in aqueous buffer solutions for the two detection schemes of quantum decoherence spectroscopy and nanoscale thermometry. The electron spin properties of single nitrogen-vacancy (NV) centers in 25 nm-sized nanodiamonds have been characterized by observing individual nanodiamonds during a continuous pH change from 4 to 11. We have determined the stability of the NV quantum sensors during the pH change as the fluctuations of ±12% and ±0.2 MHz for the spin coherence time (T₂) and the resonance frequency (ω₀) of their mean values, which are comparable to the instrument error of the measurement system. We discuss the importance of characterizing the sensing stability during the pH change and how the present observation affects the measurement scheme of nanodiamond-based NV quantum sensing.

Original language	English
Pages (from-to)	12606-12614
Number of pages	9
Journal	RSC Advances
Volume	9
Issue number	22
DOIs	https://doi.org/10.1039/c9ra02282a
Publication status	Published - 2019
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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@article{f8924b2f0df542d680928b207ee21963,

title = "Monitoring spin coherence of single nitrogen-vacancy centers in nanodiamonds during pH changes in aqueous buffer solutions",

abstract = "We report on the sensing stability of quantum nanosensors in aqueous buffer solutions for the two detection schemes of quantum decoherence spectroscopy and nanoscale thermometry. The electron spin properties of single nitrogen-vacancy (NV) centers in 25 nm-sized nanodiamonds have been characterized by observing individual nanodiamonds during a continuous pH change from 4 to 11. We have determined the stability of the NV quantum sensors during the pH change as the fluctuations of ±12% and ±0.2 MHz for the spin coherence time (T2) and the resonance frequency (ω0) of their mean values, which are comparable to the instrument error of the measurement system. We discuss the importance of characterizing the sensing stability during the pH change and how the present observation affects the measurement scheme of nanodiamond-based NV quantum sensing.",

author = "Masazumi Fujiwara and Ryuta Tsukahara and Yoshihiko Sera and Hiroshi Yukawa and Yoshinobu Baba and Shinichi Shikata and Hideki Hashimoto",

note = "Funding Information: We thank Prof. Noboru Ohtani for the AFM measurements and Ms. Kaori Kobayashi and Mr Yuta Ueda for the support in zeta-potential measurements. MF acknowledges nancial support from JSPS-KAKENHI (No. 26706007, 26610077, and 17H02741), MEXT-LEADER program, and Osaka City University (OCU-Strategic Research Grant 2017 for young researchers). MF, HY thank JSPS-KAKENHI (No. 16K13646). SS acknowledges nan-cial support from JSPS-KAKENHI (No. 26220602). HH thanks JSPS KAKENHI, Grant-in-Aids for Basic Research (B) (No. 16H04181) and Scientic Research on Innovative Areas “Innovations for Light-Energy Conversion (I4LEC)” (No. 17H06433, 17H0637) for nancial support. Publisher Copyright: {\textcopyright} 2019 The Royal Society of Chemistry.",

year = "2019",

doi = "10.1039/c9ra02282a",

language = "English",

volume = "9",

pages = "12606--12614",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

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T1 - Monitoring spin coherence of single nitrogen-vacancy centers in nanodiamonds during pH changes in aqueous buffer solutions

AU - Fujiwara, Masazumi

AU - Tsukahara, Ryuta

AU - Sera, Yoshihiko

AU - Yukawa, Hiroshi

AU - Baba, Yoshinobu

AU - Shikata, Shinichi

AU - Hashimoto, Hideki

N1 - Funding Information: We thank Prof. Noboru Ohtani for the AFM measurements and Ms. Kaori Kobayashi and Mr Yuta Ueda for the support in zeta-potential measurements. MF acknowledges nancial support from JSPS-KAKENHI (No. 26706007, 26610077, and 17H02741), MEXT-LEADER program, and Osaka City University (OCU-Strategic Research Grant 2017 for young researchers). MF, HY thank JSPS-KAKENHI (No. 16K13646). SS acknowledges nan-cial support from JSPS-KAKENHI (No. 26220602). HH thanks JSPS KAKENHI, Grant-in-Aids for Basic Research (B) (No. 16H04181) and Scientic Research on Innovative Areas “Innovations for Light-Energy Conversion (I4LEC)” (No. 17H06433, 17H0637) for nancial support. Publisher Copyright: © 2019 The Royal Society of Chemistry.

PY - 2019

Y1 - 2019

N2 - We report on the sensing stability of quantum nanosensors in aqueous buffer solutions for the two detection schemes of quantum decoherence spectroscopy and nanoscale thermometry. The electron spin properties of single nitrogen-vacancy (NV) centers in 25 nm-sized nanodiamonds have been characterized by observing individual nanodiamonds during a continuous pH change from 4 to 11. We have determined the stability of the NV quantum sensors during the pH change as the fluctuations of ±12% and ±0.2 MHz for the spin coherence time (T2) and the resonance frequency (ω0) of their mean values, which are comparable to the instrument error of the measurement system. We discuss the importance of characterizing the sensing stability during the pH change and how the present observation affects the measurement scheme of nanodiamond-based NV quantum sensing.

AB - We report on the sensing stability of quantum nanosensors in aqueous buffer solutions for the two detection schemes of quantum decoherence spectroscopy and nanoscale thermometry. The electron spin properties of single nitrogen-vacancy (NV) centers in 25 nm-sized nanodiamonds have been characterized by observing individual nanodiamonds during a continuous pH change from 4 to 11. We have determined the stability of the NV quantum sensors during the pH change as the fluctuations of ±12% and ±0.2 MHz for the spin coherence time (T2) and the resonance frequency (ω0) of their mean values, which are comparable to the instrument error of the measurement system. We discuss the importance of characterizing the sensing stability during the pH change and how the present observation affects the measurement scheme of nanodiamond-based NV quantum sensing.

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JO - RSC Advances

JF - RSC Advances

IS - 22

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Monitoring spin coherence of single nitrogen-vacancy centers in nanodiamonds during pH changes in aqueous buffer solutions

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