Dr. Tkach is a researcher at the CICECO–Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, Portugal. He works in the field of Materials Science and Engineering and Solid State Physics. A particular area of his scientific activity is related to oxide electroceramics. Alexander Tkach obtained a Ph.D. in Materials Science and Engineering from the University of Aveiro, Portugal, in 2005. His current publication profile contains one edited book, six book chapters and 83 articles. According to Scopus, his papers were cited approximately 1500 times with an h-index of 23 to date. According to Google Scholar, there are about 1800 citations with an h-index of 25. There are/were five Master's students and 2 post-doctoral students under (co-)supervision by Dr. Tkach. He has given five invited talks, and contributed to the organization of three scientific events and two awarded posters. Dr. Tkach currently belongs to the editorial boards of Nanomater. Sci. Eng. and Coatings, reviewing as well manuscripts for more than 30 scientific journals.