Vasyl Tomashyk is Executive Director and Head of the Department of the V.Ye. Lashkaryov Institute for Semiconductor Physics of the National Academy of Sciences of Ukraine. Prof. Tomashyk graduated from Chernivtsi State University in 1972 (Master of Chemistry). He is a doctor of chemical sciences (1992), professor (1999) and author of about 570 publications in scientific journals and conference proceedings including 8 books (three of which have been published by CRC Press), which are devoted to the physical-chemical analysis and chemistry of semiconductors, and the chemical treatment of semiconductor surfaces. Vasyl Tomashyk is a specialist of high international repute in the field of solid state and semiconductor chemistry, including physical-chemical analysis, and technology of semiconductor materials. He was head of research topics within the international program "Copernicus". He is a member of the Materials Science International Team (Stuttgart, Germany, since 1999) which prepares a series of prestigious reference-books under the title "Ternary Alloys" and "Binary Alloys" and has published 35 articles in the Landolt–Börnstein New Series. Vasyl Tomashyk works actively with young researchers and graduate students and under his supervision 20 Ph.D. theses have been prepared. For many years, he has been a professor at Ivan Franko Zhytomyr State University.