Formation of nanodiamond by pulsed discharge of carbon fiber wires

Xin Gao, Kun Huang, Zhen Tan, Bi Wang, Qiuzhi Song, Qi Chen, Pengwan Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

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 shockwaves 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 nanodiamond (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 in 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 the pulsed wire discharge method and is conducive to the investigation and applications of extreme conditions induced by pulsed discharge.

Original languageEnglish
Article number081902
JournalApplied Physics Letters
Volume117
Issue number8
DOIs
Publication statusPublished - 24 Aug 2020

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