Abstract

Capturing the fast rotational motion of single nanoparticles has been hindered owing to the difficulty of acquiring directional information under the optical diffraction limit. Here, we report the linewidth broadening of the electron spin resonance of single nitrogen vacancy (NV) centers that matches the rotational diffusion constant of the host nanodiamonds. When nanodiamonds are gradually detached from the substrates that they were fixed to, their optically detected spin resonance peaks are broadened by 1.8 MHz, which corresponds to the rotational diffusion constant of nanoparticles with a diameter of 11.4 nm from the Einstein–Smoluchowski relation.

Details

Title
Observation of the linewidth broadening of single spins in diamond nanoparticles in aqueous fluid and its relation to the rotational Brownian motion
Author
Fujiwara, Masazumi 1   VIAFID ORCID Logo  ; Shikano, Yutaka 2   VIAFID ORCID Logo  ; Tsukahara, Ryuta 3 ; Shikata, Shinichi 3 ; Hashimoto, Hideki 3 

1  Department of Chemistry, Osaka City University, Sumiyoshi-ku, Osaka, Japan; School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo, Japan 
2  Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki, Aichi, Japan; Institute for Quantum Studies, Chapman University, Orange, California, USA; Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Meguro-ku, Tokyo, Japan; Quantum Computing Center, Keio University, Hiyoshi, Yokohama, Japan 
3  School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo, Japan 
Pages
1-9
Publication year
2018
Publication date
Oct 2018
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41598-018-33041-6
ProQuest document ID
2116054862
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.