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高鑫老师和陈鹏万教授在《Applied Physics Letters》发表论文

关闭窗口 作者:Baoqiao Guo 发布时间:2020-09-07
 

高鑫助理教授和陈鹏万教授在《Applied Physics Letters》上发表题为“Formation of nanodiamond by pulsed discharge of carbon fiber wires”的学术文章(2020,117,081902,doi: 10.1063/5.0015806)。本项工作主要通过碳纤维脉冲放电方法制备纳米金刚石粉末。利用高能量密度和形成的汇聚冲击波,使碳纤维丝脉冲放电形成的气态、液态高温碳源凝结成纳米金刚石,并对该过程的机理进行了研究。第一作者高鑫是机电学院助理教授,通讯作者是机电学院陈鹏万教授。

论文摘要:
High-crystalline nanodiamond powder was formed during pulsed discharge of carbon fiber wires in distilled water at room temperature. The copper-foil-encapsulated carbon fiber wires were also exploded to generate converging shockwave with a higher pressure for the formation of nanodiamond. The recovered samples were characterized to be well crystallized nanodiamond with a quasi-spherical shape and a size of 3-10 nm mostly. The possible mechanism that governs the formation of ND was illustrated. Furthermore, the results show that a high input energy density of pulsed wire discharge is critical to the ND formation. The increase of the charge voltage and application of copper-foil pipe can improve the yields of ND up to 20 %. This work provides an innovative route to synthesize ND through pulsed wire discharge method and is conducive to the investigation and applications of extreme conditions induced by pulsed discharge.


论文链接:https://aip.scitation.org/doi/full/10.1063/5.0015806