Steve Feller has been a physics professor at Coe for 43 years. During this time, he taught most courses in the undergraduate physics curriculum at Coe College. His research is squarely with student colleagues and centers on the atomic structure and physical properties of glasses including many newly discovered invert regimes. In this area, he has worked with about 250 undergraduates. With these students he has published 170 papers in the refereed literature of the field. Also, he has edited several books on glass science. His students and he have given over 300 presentations at well over 150 national and international conferences. Funding from over 100 grants for $10,000,000 has been secured since 1983 from a large number of foundations, including the National Science Foundation. Also, he has a research-level interest in numismatics, the study of the history of money. In this area he has published over 160 articles, parts of several books, and in 2007 he coauthored (daughter, Ray) Silent Witnesses: Civilian Camp Money of World War II, now the standard in the field.

Feller has been honored a number of ways including being named, in 2003, Fellow of both the American Ceramic Society and the British Society of Glass Technology (SGT). In 2016 he became one of three Centennial Fellows of the SGT. He was named Iowa Professor of the Year (1995) by the Carnegie Foundation for the Advancement of Teaching. He was given the 1993 American Physical Society Prize to a Faculty Member for Research in an Undergraduate Institution. During spring and summer 1996 he served as a Fulbright Scholar to the United Kingdom where he did neutron scattering studies of glasses and crystals. He has been as visiting scholar to Greece, the UK, Japan, China, and Austria.  In 2017 he was the honoree of the International Borate Conference held at Oxford, UK.