Feb. 17, 2025 Seminar Speech (10:50 AM)

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Parent Category: News

Category: Speeches

Created on Wednesday, 12 February 2025 13:16

Last Updated on Wednesday, 12 February 2025 13:20

Published on Wednesday, 12 February 2025 13:19

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Speaker: Dr. Abdelrahman Z. AHMED

Topic: Synthesis of Quenched-produced diamond (Q-dia.) by Physical Vapor Deposition: Sustainable Approach for Modern Applications

Location: Room 102, Boya Lecture Building

Time: Feb. 17, 2025 10:50-12:10 AM

Abstract:

Diamond and related materials hold immense potential for applications in electronic devices, heat sinks, hard coatings for mechanical tools, and tribological and functional coatings for biomedical components. At Kyushu University, our research group has successfully developed nanodiamond/amorphous carbon (ND/a-C) composite films composed of numerous nanoscale diamond grains embedded in an amorphous carbon matrix. These films are synthesized using a physical vapor deposition technique known as coaxial arc plasma deposition.
Through further process optimization, we have recently achieved the growth of films that closely resemble CVD-grown polycrystalline diamond films—remarkably, at room-temperature substrate conditions. We have termed these films "quenched-produced diamond" or "Q-dia." The ability to grow Q-dia at low temperatures opens up diverse application possibilities. This presentation will cover the growth process of Q-dia films using the physical vapor deposition method and explore their potential applications in semiconductor materials, ohmic electrodes, hard coatings, biomedical coatings for dental implants, and chemical electrodes.

About the Speaker: 

Prof. Abdelrahman Zkria is an Associate Professor of Engineering Sciences at Kyushu University. He is a member of the Department of Internationalization and Future Conception (IFC), where he is responsible for the promotion of international cooperation, management of double degree programs, and supervision of postgraduate students.

Prof. Abdelrahman worked as an Associate & Assistant Professor at the Center for Japan-Egypt Cooperation in Science and Technology, Kyushu University (2020 to 2023,). Before that, he was a JSPS Postdoctoral Fellow at Kyushu University ( 2017 to 2019). He also joined the MSE Dept., North Carolina State University, USA, as a visiting scientist (Nov. 2018 to Mar.2019).
Prof. Abdelrahman obtained his Ph.D. in Applied Physics from Kyushu University in 2017. M.Sc. degree in Nanophysics and Solid-State Physics from the University of Graz, Austria, and Aswan University, Egypt, in 2012.

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