Nahar (MSc, Dhaka University; MA, PhD, Wayne State University) is an atomic astrophysicist at Ohio State University; adjunct professor, Cairo University and Aligarh Muslim University (AMU); Iron Lady of international Opacity Project and Iron Project; known for her seminal contributions in radiative atomic processes of photoionization and theoretical spectroscopy. She introduced a unified method for electron-ion recombination and x-ray spectroscopy for cancer treatment. Delivering research and lecture courses with computational workshops globally since 2013, she trained over 700 researchers. She is co-author of textbook Atomic Astrophysics and Spectroscopy (Cambridge), founder of NORAD-Atomic-Data database, co-founder, Indo-US STEM Education and Research Centre, AMU; founder, STEM research and education programme in developing countries; founder, International Society of Muslim Women in Science; director, Women in STEM Roadshow. Fellow of American Physical Society (APS), Bangladesh Physical Society, Bangladesh Academy of Sciences. Recipient of President's Golden Dome Award, Cairo University; Gold Medal, Topical Society of Laser Sciences; Medal, NRIAG; John Wheatly Award of APS.

Kabir earned his MSc in biochemistry in 1983 from the Department of Biochemistry and Molecular Biology (BMB), University of Dhaka (DU), Bangladesh and his PhD in nutritional biochemistry in 1990 from the Laboratory of Nutrition, Department of Applied Biological Chemistry, Faculty of Agriculture, Tohoku University, Japan. He then held a postdoctoral position under a joint fellowship with the United Nations University and the Japan Society for the Promotion of Science (JSPS) at the National Food Research Institute, Tsukuba, Japan (April 1994-April 1995). He was a professor at BMB, DU from December 1997 to January 2023, when he retired. Previously he was associate professor in the Department of Food Science and Nutrition, College of Life Sciences, Kuwait University, Kuwait (September 2004–June 2009, on leave from DU); associate professor, BMB, DU (December 1991–December 1997); assistant professor, BMB, DU (April 1990–December 1991); and lecturer, BMB, DU (April 1984–March 1990). He was a visiting scientist as a JSPS Fellow at Tohoku University, Japan (December 2003–May 2004); and at Federal Research Institute of Nutrition and Food, Karlsruhe, Germany (August 1998–March 1999).