JOURNAL ARTICLE

Germanium-vacancy centers in detonation nanodiamond for all-optical nanoscale thermometry.

  • Published In: Applied Physics Letters, 2023, v. 123, n. 18. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Fujiwara, Masanori; Fu, Haining; Hariki, Nene; Ohki, Izuru; Makino, Yuto; Liu, Ming; Tsurui, Akihiko; Yoshikawa, Taro; Nishikawa, Masahiro; Mizuochi, Norikazu 3 of 3

Abstract

This article focuses on the development and characterization of germanium-vacancy (GeV) detonation nanodiamonds (DNDs) as all-optical nanoscale thermometers suitable for intracellular temperature sensing. The GeV-DNDs have a mean particle size of approximately 20–32 nm, making them the smallest GeV-based particles reported for thermometry, which is advantageous for minimizing cellular invasiveness. The study demonstrates that the zero-phonon line (ZPL) peak wavelength of GeV centers in these nanodiamonds shifts linearly with temperature, enabling temperature sensitivity with sub-kelvin precision comparable to that of single GeV centers in bulk diamonds. These findings suggest that GeV-DNDs are promising photoluminescence probes for precise intracellular temperature mapping and multicolor imaging in biological systems.

Additional Information

  • Source:Applied Physics Letters. 2023/10, Vol. 123, Issue 18, p1
  • Document Type:Article
  • Subject Area:Technology
  • Publication Date:2023
  • ISSN:0003-6951
  • DOI:10.1063/5.0168194
  • Accession Number:173433791
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