Laser-induced structure transition of diamond-like carbon coated on cemented carbide and formation of reduced graphene oxide

Abdelrahman Zkria, Ariful Haque, Mohamed Egiza, Eslam Abubakr, Koki Murasawa, Tsuyoshi Yoshitake, Jagdish Narayan

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)

抄録

We report on the structural evolution of diamond-like carbon (DLC) films by the nanosecond pulsed laser annealing process. DLC film is coated on cemented carbide (WC-Co) by cathodic arc ion plating, which is then annealed by ArF laser (193 nm, 20 ns) at different laser fluences (0.9-1.7 J/cm2). Upon laser annealing, Raman spectra divulge higher sp3 fractions accompanied by a blue shift in the G-peak position, which indicates the changes of sp2 sites from rings to chains. At higher fluence (>1.2 J/cm2), the film converts into reduced graphene oxide confirmed by its Raman-active vibrational modes: D, G, and 2D.

本文言語英語
ページ(範囲)910-915
ページ数6
ジャーナルMRS Communications
9
3
DOI
出版ステータス出版済み - 9 1 2019

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)

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