Hiroyuki Ohshima is Professor Emeritus at the Tokyo University of Science, Japan. He received the B.S. (1968), M.S. (1970), and Ph.D. (1974) degrees in physics from the University of Tokyo. He spent his post-doc study at University of Melbourne, Australia (1981-1983), State University of New York at Buffalo, USA (1983-1984), and University of Utah, USA (1984-1985). He has worked at the Tokyo University of Science, Japan since 1985. He was previously a Professor of Pharmaceutical Sciences at the Tokyo University of Science (1994-2012) and is now a Professor Emeritus and a Visiting Professor. He is the author of Theory of Colloid and Interfacial Electric Phenomena (Elsevier, 2006) and Biophysical Chemistry of Biointerfaces (Wiley, 2010). He edited Electrical Phenomena at Interfaces and Biointerfaces (Wiley, 2012) and Encyclopedia of Biocolloid and Biointerface Science (Wiley, 2016). He co-edited Electrical Phenomena at Interfaces. 2e (Marcel Dekker, 1998) and Colloid and Interface Science in Pharmaceutical Research and Development (Elsevier, 2014). He is also the author or co-author of over 400 book chapters and journal publications, reflecting his research interests in colloid and interface science. He was an Editor of the journal Colloids and Surfaces B: Biointerfaces (1994-2012, Elsevier) and currently he is an Associate Editor of Colloid and Polymer Science (2002-present, Springer). In 2016, Ohshima was awarded the 29th Khwarizmi International Award by the Iranian Research Organization for Science and Technology for his contribution to the theory of colloid and interfacial electric phenomena. In 2017, he was selected as one of Asia's top 100 scientists for 2017 (The Asian Scientist Magazine, June 2017). In 2022, he was awarded Fellow of Japan Oil Chemists' Society. On January 13, 2021, the layman's summary of Ohshima’s research article:?Gel Electrophoresis of a Soft Particle (Adv. Colloid Interface Sci., 271, 101977, 2019)?was published on the Atlas of Science website (https://atlasofscience.org/soft-particle-gel-electrophoresis/).