Farida Selim has a broad research program in the fields of radiation and materials. Her research covers a wide range of topics from developing new techniques and instrumentation, material growth and characterization to defect studies. She is an expert on positron annihilation and luminescence spectroscopies and has been very active in using accelerators in materials science, and developing new techniques. Selim has earned international recognition in a number of scientific communities that has been reflected in selecting her to be a member of the International Scientific Committee of Positron and Positronium Chemistry (PPC), a member of the International Advisory Committee on Positron Studies of Defects (PSD), and a member of the International Advisory Committee of the International Conference on Positron Annihilation (ICPA). She has been also a Secretary of the International Academic Advisory Committee on 'Persistent and Photostimulable Phosphors” in 2015. She was the organizer and chair of the largest positron conference ICPA- 18 in August 2018 and she has been selected to host and chair the International Workshop on ZnO and other oxide semiconductors in September 2020. Selim is an editor of a scientific book, author of a number of peer reviewed journal articles and three book chapters and sole inventor of 5 patents, 2 issued and 3 pending, in addition to her significant invention at the beginning of her career Accelerator-based positron annihilation spectroscopy” technique which extends positron annihilation spectroscopy to numerous new fields in materials science. The technique is known today as Gamma induced positron spectroscopy (GIPS); it has been recently adopted to build a unique materials research facility at the superconducting accelerator facility in Dresden, Germany and similar facilities in Japan and India.