Nano Archive

Mapping the location and configuration of nitrogen in diamond nanoparticles

Barnard, Amanda S. and Sternberg, Michael (2007) Mapping the location and configuration of nitrogen in diamond nanoparticles. NANOTECHNOLOGY, 18 (2).

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Official URL: http://dx.doi.org/10.1088/0957-4484/18/2/025702

Abstract

Understanding how impurities such as nitrogen are included in diamond nanoparticles is expected to be important for use in future nanodevices, such as qubits for quantum computing. Most commercial diamond nanoparticles contain approximately 2-3% nitrogen, but it is difficult to determine experimentally whether it is located within the core or at the surface of the nanoparticles. Presented here are density functional tight-binding simulations examining the configuration and potential energy surface of substitutional nitrogen in diamond nanoparticles, directly comparing results of different sizes, shapes and surface chemistry. The results predict that nitrogen is metastable within the core of both hydrogenated and dehydrogenated particles, but that the binding energy, coordination and preferred location is dependent upon the structure of the nanoparticle as a whole.

Item Type:Article
Subjects:Material Science > Nanostructured materials
Material Science > Nanochemistry
ID Code:3527
Deposited By:Farnush Anwar
Deposited On:16 Jan 2009 17:35
Last Modified:16 Jan 2009 17:35

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