Dr. A. Alexandar is an Assistant Professor of Physics and Coordinator of the Unnat Bharat Abhiyan (UBA) Cell at St. Joseph’s College (Autonomous), Tiruchirappalli, India. His research focuses on crystal growth, nonlinear optical (NLO) materials, scintillation detectors, nanomaterials, renewable energy technologies, sensors, IoT systems, and optoelectronic devices.

He obtained his Ph.D. in Physics from Bharathidasan University and has published more than 25 research articles, 6 book chapters, and 5 books in the areas of materials science, renewable energy, nanotechnology, and applied physics. His research investigates the growth and characterization of advanced crystalline materials for photonic, photovoltaic, optical limiting, and radiation detection applications.

Dr. Alexandar serves as an Editorial Board Member of the Springer Nature journal Discover Materials and as Managing Editor of the Asian Journal of Physics. He is also a reviewer for several leading journals published by Springer, Elsevier, AIP, MDPI, IOP Publishing, and World Scientific.

He has successfully secured and coordinated multiple research, outreach, and infrastructure projects funded by the Ministry of Education, Government of India, the Indian Academy of Sciences, and the Tamil Nadu State Council for Science and Technology (TNSCST). His funded projects include renewable energy initiatives such as wind turbine installations, rainwater harvesting systems, LED-based public information systems, science exhibitions, lecture workshops, and refresher courses. He has also received institutional funding for crystal growth and materials research projects.

Beyond academic research, he is actively engaged in translating scientific innovations into societal benefits through rural development and sustainability projects. His work includes the design and installation of wind energy systems, renewable energy awareness programs, science outreach activities, and technology-driven solutions for communities.

His current interests include crystal engineering for next-generation photonic devices, organic scintillation materials, nanomaterials for environmental and biomedical applications, AI-assisted materials research, renewable energy systems, and interdisciplinary scientific collaborations. He welcomes opportunities to collaborate with researchers, educators, and industry partners working at the intersection of materials science, energy, sustainability, and emerging technologies