Oleksandr Kolomys is a senior researcher at V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine. He earned his M.S. in Physics at Rivne State Humanities University (Applied-Physics Department), in 2001, and his Ph.D. in Solid State Physics in V. Lashkaryov Institute of Semiconductor Physics, Kyiv Ukraine in 2006. In his thesis, he studied surface morphology and optical property of (In,Ga)As/GaAs and InAs/AlSb nanostructures. His research focuses on studying and understanding the fundamental properties of a wide range of nanostructured materials for developing novel optoelectronic devices. He has significant experience in the development of technology and experimental studies of optical, electronic, and structural properties of a wide range of semiconductor materials and nanostructures, diagnostics of their chemical and phase composition, deformations, defect and impurity states, disordering effects using complementary methods of Raman and PL micro-spectroscopy, FTIR, XRD, and AFM analysis. IEEE member (Member No. 99139749) Oleksandr Kolomys has more than 110 papers published in international peer-reviewed scientific journals and more than 100 abstracts from international scientific conferences.