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0Promising applications of fluorescent nanodiamonds
I.I. Vlasov
Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
vlasov@nsc.gpi.ru
Nanosized diamonds containing single fluorescent centers are promising material platform for the development of single-photon sources (SPS). Their main advantages over bulk diamond structures are the possibility of (1) high spatial localization of a single emitter, which is determined by the size of the diamond nanoparticle, (2) coupling with various types of micro- and nano-resonators in order to increase the photon emission rate, (3) scaling of single-photon emitters. To date, we have developed SPS based on silicon-vacancy (SiV) centers in 200-nm HPHT nanodiamonds with an emission rate of more than 1 million photons per second. The developed SPS are proposed to be used in quantum communication and computing technologies.
In recent years, we have been actively developing an all-optical method for measuring ultra-local temperature fields based on detecting the shift and broadening of the spectral line of luminescent silicon-vacancy centers in nanodiamonds when they are heated [1]. We have also developed a new approach to controlled local heating using luminescent nanodiamonds. The approach is based on combining the properties of a heater and a thermometer in one material - a polycrystalline nanodiamond particle, and using one such particle, which can be positioned with high spatial accuracy (up to several nanometers) at any given point in the studied medium [2]. The first results of the successful application of a diamond thermometer-heater in biological research are presented.
This work was supported by Russian Science Foundation, grant No 23-14-00129 (https://rscf.ru/project/23-14-00129/).
[1] A.M. Romshin, V. Zeeb, A.K. Martyanov, O.S. Kudryavtsev, D.G. Pasternak, V.S. Sedov, V.G. Ralchenko, A.G. Sinogeykin, I.I. Vlasov, A new approach to precise mapping of local temperature fields in submicrometer aqueous volumes, Sci. Rep., 11, 14228 (2021).
[2] A.M. Romshin, V. Zeeb, E. Glushkov, A. Radenovic, A.G. Sinogeikin, I.I. Vlasov, Nanoscale thermal control of a single living cell enabled by diamond heater-thermometer, Sci. Rep., 13, 8546 (2023).
