Seminario Prof.ssa Katarzyna Peta
Multiscale geometric characterization of functional surfaces: Tribological aspects
Prof.ssa Katarzyna Peta, Poznań University of Technology (Poland)
Abstract: The aim of multiscale surface analysis is to identify the characteristic observation scales at which surface topography is most strongly related to manufacturing process parameters and functional properties, such as wettability. Many surfaces exhibit multiscale geometric structures that can be described using a fractal approach, accounting for features of different lengths and surface areas. The decomposition of surface topography into features ranging from nanoscale and microscale roughness to waviness and form provides the basis for multiscale analysis and enables the investigation of their relationships with surface phenomena. By analyzing surface topography across multiple scales, it is possible to determine which topographical components are most relevant to functional behavior. Multiscale analysis of surface topography is also important for understanding tribological phenomena, particularly friction, wear, and lubrication. Identifying the characteristic scales at which surface topography most strongly influences tribological behavior can support the design of surfaces to enhance lubrication efficiency, reduce friction and wear, and optimize the overall performance of tribological systems.
Dr Katarzyna Peta is an Assistant Professor in Mechanical Engineering at Poznan University of Technology, Poland. She has also conducted postdoctoral research at Worcester Polytechnic Institute, USA, and the University of Leeds, UK. Her research focuses on multiscale relationships between surface topography and functional properties, particularly wetting and lubrication, combining fundamental surface science with engineering applications. Dr Peta has authored approximately 50 peer-reviewed scientific publications and contributed to two books. She is a member of the American Chemical Society (ACS) and the Poznan Society of Friends of Sciences. She has also served as an editor for Scientific Reports (Nature Portfolio). Dr Peta has led a research project funded by the National Science Centre (NCN) in Poland. She was also awarded a scholarship by the Polish Minister of Science and Higher Education for outstanding young researchers. At Poznan University of Technology, Dr Peta teaches courses on manufacturing processes. She is also involved in the university’s tutoring programme, supporting students in their individual academic and professional development.