Nanosecond laser shock detonation of nanodiamonds: from laser-matter interaction to graphite-to-diamond phase transition

纳米制造 材料科学 钻石 激光器 起爆 纳米技术 石墨 相变 成核 休克(循环) 爆炸物 光学 复合材料 物理 凝聚态物理 化学 有机化学 内科学 热力学 医学
作者
Xing Zhang,Haofan Sun,Bo Mao,Rui Dai,Houlong Zhuang,Yiliang Liao,Qiong Nian
出处
期刊:International journal of extreme manufacturing [IOP Publishing]
卷期号:4 (1): 015401-015401 被引量:6
标识
DOI:10.1088/2631-7990/ac37f1
摘要

Abstract Nanodiamonds (NDs) have been widely explored for applications in drug delivery, optical bioimaging, sensors, quantum computing, and others. Room-temperature nanomanufacturing of NDs in open air using confined laser shock detonation (CLSD) emerges as a novel manufacturing strategy for ND fabrication. However, the fundamental process mechanism remains unclear. This work investigates the underlying mechanisms responsible for nanomanufacturing of NDs during CLSD with a focus on the laser-matter interaction, the role of the confining effect, and the graphite-to-diamond transition. Specifically, a first-principles model is integrated with a molecular dynamics simulation to describe the laser-induced thermo-hydrodynamic phenomena and the graphite-to-diamond phase transition during CLSD. The simulation results elucidate the confining effect in determining the material’s responses to laser irradiation in terms of the temporal and spatial evolutions of temperature, pressure, electron number density, and particle velocity. The integrated model demonstrates the capability of predicting the laser energy threshold for ND synthesis and the efficiency of ND nucleation under varying processing parameters. This research will provide significant insights into CLSD and advance this nanomanufacturing strategy for the fabrication of NDs and other high-temperature-high-pressure synthesized nanomaterials towards extensive applications.
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