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The modeling and synthesis of nanodiamonds by laser ablation of graphite and diamond-like carbon in liquid-confined ambient

Nanodiamonds have attracted considerable interest for their potential applications in quantum computation, sensing, and bioimaging. However, synthesis of nanodiamonds typically requires high pressures and temperatures, and is still a challenge. Here, we demonstrate production of nanodiamonds by puls...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2018, Vol.124 (1), p.1-7, Article 72
Main Authors: Basso, L., Gorrini, F., Bazzanella, N., Cazzanelli, M., Dorigoni, C., Bifone, A., Miotello, A.
Format: Article
Language:English
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Summary:Nanodiamonds have attracted considerable interest for their potential applications in quantum computation, sensing, and bioimaging. However, synthesis of nanodiamonds typically requires high pressures and temperatures, and is still a challenge. Here, we demonstrate production of nanodiamonds by pulsed laser ablation of graphite and diamond-like carbon in water. Importantly, this technique enables production of nanocrystalline diamonds at room temperature and standard pressure conditions. Moreover, we propose a method for the purification of nanodiamonds from graphitic and amorphous carbon phases that do not require strong acids and harsh chemical conditions. Finally, we present a thermodynamic model that describes the formation of nanodiamonds during pulsed laser ablation. We show that synthesis of the crystalline phase is driven by a graphite–liquid–diamond transition process that occurs at the extreme thermodynamic conditions reached inside the ablation plume.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-017-1491-3