Počet záznamů: 1
Fluorescent HPHT nanodiamonds have disk- and rod-like shapes
- 1.
SYSNO ASEP 0569756 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Fluorescent HPHT nanodiamonds have disk- and rod-like shapes Tvůrce(i) Eldemrdash, S. (AU)
Thalassinos, G. (AU)
Alzahrani, A. (AU)
Sun, Q. (AU)
Walsh, E. (AU)
Grant, E. (AU)
Abe, H. (JP)
Greaves, T. L. (AU)
Ohshima, T. (JP)
Cígler, Petr (UOCHB-X) RID, ORCID
Matějíček, P. (CZ)
Simpson, D. A. (AU)
Greentree, A.D. (AU)
Bryant, G. (AU)
Gibson, B. C. (AU)
Reineck, P. (AU)Zdroj.dok. Carbon. - : Elsevier - ISSN 0008-6223
Roč. 206, March (2023), s. 268-276Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova nanodiamond ; shape ; nitrogen-vacancy center Obor OECD Nano-materials (production and properties) CEP EF16_026/0008382 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UOCHB-X - RVO:61388963 UT WOS 001009050600001 EID SCOPUS 85148699742 DOI 10.1016/j.carbon.2023.02.018 Anotace Fluorescent nanodiamonds (FNDs) containing nitrogen-vacancy (NV) centers can be used as nanoscale sensors for temperature and electromagnetic fields and find increasing application in many areas of science and technology from biology to quantum metrology. Decreasing the separation between the NV centers and their sensing target often enhances the measurement sensitivity. FND shape strongly affects this distance from NV centers to the particle surface and therefore properties such as brightness and fluorescence spectrum, and can limit sensor applications. Here, we demonstrate that FNDs made from high-pressure high-temperature (HPHT) diamond have predominantly disk-like shapes. Using single-particle atomic force microscopy in combination with ensemble X-ray and light scattering techniques, we show that a typical FND in the 50–150 nm size range has an aspect ratio of three i.e. is three times thinner (e.g. in z) than it is wide (e.g. in the x-y plane). This high aspect ratio of FNDs is important for many quantum sensing measurements as it will enable enhanced sensitivities compared to spherical or other isotropic particle geometries. We investigate FND shape, fluorescence properties, T1 spin relaxation time and T1 fluorescence contrast as functions of particle size and discuss the implications of FND particle shape on quantum sensing applications. Pracoviště Ústav organické chemie a biochemie Kontakt asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Viktorie Chládková, Tel.: 232 002 434 Rok sběru 2024 Elektronická adresa https://doi.org/10.1016/j.carbon.2023.02.018
Počet záznamů: 1