Статья

Fluorescence and Spin Properties of Defects in Single Digit Nanodiamonds

Julia TislerInstitute of Physics, University of Stuttgart, Stuttgart, GermanyGopalakrishnan BalasubramanianInstitute of Physics, University of Stuttgart, Stuttgart, GermanyBoris NaydenovInstitute of Physics, University of Stuttgart, Stuttgart, GermanyRoman KolesovInstitute of Physics, University of Stuttgart, Stuttgart, GermanyBernhard GrotzInstitute of Physics, University of Stuttgart, Stuttgart, GermanyRolf ReuterInstitute of Physics, University of Stuttgart, Stuttgart, GermanyJean‐Paul BoudouStructure and Activity of Normal and Pathological Biomolecules, INSERM/UEVE U829, Bat. Maupertuis, rue du père Jarlan 91025 Evry, FrancePatrick A. CurmiStructure and Activity of Normal and Pathological Biomolecules, INSERM/UEVE U829, Bat. Maupertuis, rue du père Jarlan 91025 Evry, FranceMohamed SennourCentre des Matériaux, Mines-ParisTech, UMR7633 BP 87, 91003 Evry Cedex, FranceAlain ThorelCentre des Matériaux, Mines-ParisTech, UMR7633 BP 87, 91003 Evry Cedex, FranceMichael BörschInstitute of Physics, University of Stuttgart, Stuttgart, GermanyKurt AulenbacherJohannes Gutenberg-Universität Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, GermanyRainer ErdmannPicoQuant GmbH, Rudower Chaussee 29, D-12489 Berlin, GermanyPhilip HemmerTexas A&M University, College Station, Texas 77843Fedor JelezkoInstitute of Physics, University of Stuttgart, Stuttgart, GermanyJörg WrachtrupInstitute of Physics, University of Stuttgart, Stuttgart, Germany

2009en

ABI

Аннотация

This article reports stable photoluminescence and high-contrast optically detected electron spin resonance (ODESR) from single nitrogen-vacancy (NV) defect centers created within ultrasmall, disperse nanodiamonds of radius less than 4 nm. Unexpectedly, the efficiency for the production of NV fluorescent defects by electron irradiation is found to be independent of the size of the nanocrystals. Fluorescence lifetime imaging shows lifetimes with a mean value of around 17 ns, only slightly longer than the bulk value of the defects. After proper surface cleaning, the dephasing times of the electron spin resonance in the nanocrystals approach values of some microseconds, which is typical for the type Ib diamond from which the nanoparticle is made. We conclude that despite the tiny size of these nanodiamonds the photoactive nitrogen-vacancy color centers retain their bulk properties to the benefit of numerous exciting potential applications in photonics, biomedical labeling, and imaging.

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Идентификаторы

DOI: 10.1021/nn9003617

Цитирования и источники

Цитирований: 3Использованных источников: 0

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