Professor Birdi has worked at Standard Oil of California; Lever Bros. in Copenhagen, Denmark; and the Danish Technical University, Lyngby, Denmark. Dr. Birdi was appointed research professor in 1985, and in 1990 (through 1999) he was appointed as a professor at the School of Pharmacy in Copenhagen, Denmark. Professor Birdi has been a consultant to various national and international industries. He has been a member of various chemical societies and organizing committees of national and international meetings related to surface science (advisory member, 1985-1987, of the ACS journal Langmuir) . Professor Birdi is the author of some 100 papers and articles and has published diverse books, most recently Surface & Colloid Chemistry , CRC Press, 2010; and Introduction to Electrical Interfacial Phenomena , K.S. Birdi (Editor), 2010, CRC Press.