Dr. Ranjan Kumar is a Professor in the Department of Physics at King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia - on leave from Panjab University, Chandigarh, India. Dr. Kumar’s field of specialization is theoretical condensed matter physics, and his research interests include: Fullerenes and carbon materials, Heusler alloys for spintronic applications, dilute magnetic semiconductors, electronic and thermoelectric properties of materials, and superconductors.