Sergiusz Łuczak born in the city of Tarnów, Poland in 1972, received the M.Sc. Eng., Ph.D. and D.Sc. (habilitation) degrees in fine mechanics and mechatronics from the Faculty of Mechatronics (FM), Warsaw University of Technology (WUT), Warsaw, Poland, in 1997, 2003 and 2016. He is currently an Associate Professor and the Head of the Division of Design of Precision Devices at the Institute of Micromechanics and Photonics, FM, WUT, where he deals with mechatronics, fine mechanics, horology and microsystem technology (experimental studies of MEMS accelerometers and tilt sensors). His research covers also bibliometrics (recovery of missing citations in scientific knowledge databases). He is author/co-author of 40+ publications in scientific journals and conference papers. He created many technological inventions (6 with patents pending) related to mechatronics, motorcycle technique, freediving. Major awards: Champion of Poland in RC car models (1988, 1992), award of the Committee of Mechanics at the Polish Academy of Sciences for the published papers (2007), 6 awards of the WUT Rector for scientific (2004, 2008, 2017, 2019) and didactic achievements (2011, 2012), award of the Watch Connoisseur Club (Warsaw) for promoting knowledge on horology (2014) and medal of the Commission of National Education (2019). Personal interests: scuba- and free-diving, swimming, motorcycles, ATV, electronic music, biblical Christianity (The Last Reformation, organic churches, no-place-left).