"Vasyl Tomashyk is the head of the department at the V.Ye. Lashkaryov Institute for Semiconductor Physics of the National Academy of Sciences of Ukraine. Graduating from Chernivtsi State University in 1972 (Master of Chemistry), he is a doctor of chemical sciences (1992), professor (1999) and author of about 670 publications in scientific journals and conference proceedings, including 11 books (six of which are published by CRC Press) devoted to physical-chemical analysis, chemistry of semiconductors, and chemical treatment of semiconductor surfaces. Prof. Tomashyk is a specialist at a high international level in the field of solid state and semiconductor chemistry, including physical-chemical analysis and the technology of semiconductor materials. He was head of research topics within the International program ""Copernicus."" He has been a member of the Materials Science International Team (Stuttgart, Germany, since 1999), which prepares a series of prestigious reference-books under the titles of Ternary Alloys and Binary Alloys and has publishe 35 articles in the Landolt–Börnstein New Series. Prof. Tomashyk is actively working with young researchers and graduate students and 22 PhD theses have been prepared under his supervision. For many years, he has been a professor at Ivan Franko Zhytomyr State University."