Nanodiamonds with group-IV color centers, such as silicon-vacancy centers and germanium-vacancy (GeV) centers, exhibit excellent properties, including a sharp and stable zero-phonon line, surface functionalization, and low cytotoxicity. Because the line peak wavelength shifts linearly with the temperature under ambient conditions, the nanodiamonds are promising candidates for all-optical nanoscale thermometry inside a living cell. However, the particles used for temperature measurements have been reported to be larger than a few hundred nanometers. Here, we report temperature sensing using GeV detonation nanodiamonds. The GeV nanodiamonds have a mean particle size of 20 nm. These are the smallest particles among GeV-based particles used in thermometry. The sensitivity of the single GeV centers in the detonation nanodiamond is estimated to be almost consistent with the reported ones of the single GeV centers in bulk diamonds, which can potentially reach sub-kelvin temperature accuracy. The GeV detonation nanodiamonds should function as good photoluminescence probes and intracellular temperature sensors.
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30 October 2023
Research Article|
November 01 2023
Germanium-vacancy centers in detonation nanodiamond for all-optical nanoscale thermometry
Masanori Fujiwara
;
Masanori Fujiwara
(Formal analysis, Investigation, Writing – original draft)
1
Institute for Chemical Research, Kyoto University
, Gokasho, Uji, Kyoto 611-0011, Japan
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Haining Fu;
Haining Fu
(Formal analysis, Investigation)
1
Institute for Chemical Research, Kyoto University
, Gokasho, Uji, Kyoto 611-0011, Japan
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Nene Hariki
;
Nene Hariki
(Formal analysis, Investigation)
1
Institute for Chemical Research, Kyoto University
, Gokasho, Uji, Kyoto 611-0011, Japan
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Izuru Ohki
;
Izuru Ohki
(Formal analysis, Investigation)
1
Institute for Chemical Research, Kyoto University
, Gokasho, Uji, Kyoto 611-0011, Japan
2
Institute for Quantum Life Science, National Institutes for Quantum Science and Technology
, Anagawa, Inage, Chiba 263-8555, Japan
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Yuto Makino
;
Yuto Makino
(Investigation, Resources)
3
Innovation and Business Development Headquarters, Daicel Corporation
, 1239, Shinzaike, Aboshi-ku, Himeji, Hyogo 671-1283, Japan
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Ming Liu;
Ming Liu
(Investigation, Resources)
3
Innovation and Business Development Headquarters, Daicel Corporation
, 1239, Shinzaike, Aboshi-ku, Himeji, Hyogo 671-1283, Japan
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Akihiko Tsurui;
Akihiko Tsurui
(Investigation, Resources)
3
Innovation and Business Development Headquarters, Daicel Corporation
, 1239, Shinzaike, Aboshi-ku, Himeji, Hyogo 671-1283, Japan
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Taro Yoshikawa
;
Taro Yoshikawa
(Investigation, Resources)
3
Innovation and Business Development Headquarters, Daicel Corporation
, 1239, Shinzaike, Aboshi-ku, Himeji, Hyogo 671-1283, Japan
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Masahiro Nishikawa
;
Masahiro Nishikawa
(Investigation, Supervision, Writing – original draft, Writing – review & editing)
3
Innovation and Business Development Headquarters, Daicel Corporation
, 1239, Shinzaike, Aboshi-ku, Himeji, Hyogo 671-1283, Japan
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Norikazu Mizuochi
Norikazu Mizuochi
a)
(Conceptualization, Supervision, Writing – original draft, Writing – review & editing)
1
Institute for Chemical Research, Kyoto University
, Gokasho, Uji, Kyoto 611-0011, Japan
4
Center for Spintronics Research Network, Kyoto University
, Gokasho, Uji, Kyoto 611-0011, Japan
a)Author to whom correspondence should be addressed: mizuochi@scl.kyoto-u.ac.jp. Tel.: +81–774 38 3130
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a)Author to whom correspondence should be addressed: mizuochi@scl.kyoto-u.ac.jp. Tel.: +81–774 38 3130
Appl. Phys. Lett. 123, 181903 (2023)
Article history
Received:
July 18 2023
Accepted:
October 18 2023
Citation
Masanori Fujiwara, Haining Fu, Nene Hariki, Izuru Ohki, Yuto Makino, Ming Liu, Akihiko Tsurui, Taro Yoshikawa, Masahiro Nishikawa, Norikazu Mizuochi; Germanium-vacancy centers in detonation nanodiamond for all-optical nanoscale thermometry. Appl. Phys. Lett. 30 October 2023; 123 (18): 181903. https://doi.org/10.1063/5.0168194
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