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6CCVD Research

Salt-coated air oxidation nanodiamond surface purification with a photoluminescence spectroscopy quality control

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2024-09-18
JournalNanotechnology
AuthorsŠ”. Š. Š”Š°Š²ŠøŠ½Š¾Š², T. Yu. Kolomiets, Dongxue Bi, V. V. Sychev
InstitutionsBaikov Institute of Metallurgy and Materials Science, P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Abstract

Section titled ā€œAbstractā€

Abstract Emerging fields of quantum technologies and biomedical applications demand pure nanodiamonds (NDs) with well-defined surface chemistry. Therefore, an inexpensive, scalable and eco-friendly ND surface purification technology is required. In this study, we report our method, salt-coated air oxidation (SCAO) thermal annealing, to achieve uniform purification of a ND surface without the loss of diamond material. A photoluminescence (PL) spectroscopy quality control method is proposed to evaluate the degree of purification. The presence of an isoemission point in the set of nitrogen vacancy (NV) center PL spectra, obtained through the photochromic effect, is examined as a surface purity indicator. The ratio of the NV centers in NDs after the SCAO treatment was determined by decomposing the PL spectra using the non-negative matrix factorization technique.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
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