Counting vacancies and nitrogen-vacancy centers in detonation nanodiamond

Detonation nanodiamond particles (DND) contain highly-stable nitrogen-vacancy (N-V) centers, making it important for quantum-optical and biotechnology applications. However, due to the small particle size, the N-V concentrations are believed to be intrinsically very low, spawning efforts to understa...

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Autores principales: Chang, Shery L. Y., Barnard, Amanda S., Dwyer, Christian, Boothroyd, Chris B., Hocking, Rosalie K., Ōsawa, Eiji, Nicholls, Rebecca J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5048336/
https://www.ncbi.nlm.nih.gov/pubmed/27147128
http://dx.doi.org/10.1039/c6nr01888b
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author Chang, Shery L. Y.
Barnard, Amanda S.
Dwyer, Christian
Boothroyd, Chris B.
Hocking, Rosalie K.
Ōsawa, Eiji
Nicholls, Rebecca J.
author_facet Chang, Shery L. Y.
Barnard, Amanda S.
Dwyer, Christian
Boothroyd, Chris B.
Hocking, Rosalie K.
Ōsawa, Eiji
Nicholls, Rebecca J.
author_sort Chang, Shery L. Y.
collection PubMed
description Detonation nanodiamond particles (DND) contain highly-stable nitrogen-vacancy (N-V) centers, making it important for quantum-optical and biotechnology applications. However, due to the small particle size, the N-V concentrations are believed to be intrinsically very low, spawning efforts to understand the formation of N-V centers and vacancies, and increase their concentration. Here we show that vacancies in DND can be detected and quantified using simulation-aided electron energy loss spectroscopy. Despite the small particle size, we find that vacancies exist at concentrations of about 1 at%. Based on this experimental finding, we use ab initio calculations to predict that about one fifth of vacancies in DND form N-V centers. The ability to directly detect and quantify vacancies in DND, and predict the corresponding N-V formation probability, has a significant impact to those emerging technologies where higher concentrations and better dispersion of N-V centres are critically required.
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spelling pubmed-50483362016-10-12 Counting vacancies and nitrogen-vacancy centers in detonation nanodiamond Chang, Shery L. Y. Barnard, Amanda S. Dwyer, Christian Boothroyd, Chris B. Hocking, Rosalie K. Ōsawa, Eiji Nicholls, Rebecca J. Nanoscale Chemistry Detonation nanodiamond particles (DND) contain highly-stable nitrogen-vacancy (N-V) centers, making it important for quantum-optical and biotechnology applications. However, due to the small particle size, the N-V concentrations are believed to be intrinsically very low, spawning efforts to understand the formation of N-V centers and vacancies, and increase their concentration. Here we show that vacancies in DND can be detected and quantified using simulation-aided electron energy loss spectroscopy. Despite the small particle size, we find that vacancies exist at concentrations of about 1 at%. Based on this experimental finding, we use ab initio calculations to predict that about one fifth of vacancies in DND form N-V centers. The ability to directly detect and quantify vacancies in DND, and predict the corresponding N-V formation probability, has a significant impact to those emerging technologies where higher concentrations and better dispersion of N-V centres are critically required. Royal Society of Chemistry 2016-05-28 2016-04-28 /pmc/articles/PMC5048336/ /pubmed/27147128 http://dx.doi.org/10.1039/c6nr01888b Text en This journal is © The Royal Society of Chemistry 2016 http://creativecommons.org/licenses/by/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution 3.0 Unported License (http://creativecommons.org/licenses/by/3.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Chemistry
Chang, Shery L. Y.
Barnard, Amanda S.
Dwyer, Christian
Boothroyd, Chris B.
Hocking, Rosalie K.
Ōsawa, Eiji
Nicholls, Rebecca J.
Counting vacancies and nitrogen-vacancy centers in detonation nanodiamond
title Counting vacancies and nitrogen-vacancy centers in detonation nanodiamond
title_full Counting vacancies and nitrogen-vacancy centers in detonation nanodiamond
title_fullStr Counting vacancies and nitrogen-vacancy centers in detonation nanodiamond
title_full_unstemmed Counting vacancies and nitrogen-vacancy centers in detonation nanodiamond
title_short Counting vacancies and nitrogen-vacancy centers in detonation nanodiamond
title_sort counting vacancies and nitrogen-vacancy centers in detonation nanodiamond
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5048336/
https://www.ncbi.nlm.nih.gov/pubmed/27147128
http://dx.doi.org/10.1039/c6nr01888b
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