**About the Editors**

**Stephan Tremmel** is Chair of Engineering Design and CAD at the Faculty of Engineering at the University of Bayreuth. His research focuses on finite element analysis (development, modeling, simulation) and on design of functionally integrated machine elements with main application in drive technology and energy engineering. Furthermore, he has special experience in surface engineering (texturing, PVD coatings) and tribology. He has 90 peer-reviewed journal publications. He is on the editorial board of *Lubricants* and is a member of the German Research Association for Drive Technology and the German Society for Tribology.

**Max Marian** is an Assistant Professor for Multiscale Engineering Mechanics at the Department of Mechanical and Metallurgical Engineering of Pontificia Universidad Catolica de Chile. His ´ research focuses on energy efficiency and sustainability through tribology, with an emphasis on the modification of surfaces through micro-texturing and coatings (DLC, MoS2, MXenes). Besides machine elements and engine components, he expanded his fields towards biotribology and artificial joints as well as triboelectric nanogenerators. His research is particularly related to the development of numerical multiscale tribo-simulation and machine learning approaches. He has published more than 30 peer-reviewed journal publications, as well as a book chapter, and is on the editorial boards of *Frontiers in Chemistry Nanoscience*, *Industrial Lubrication* and *Tribology* as well as *Lubricants*. Furthermore, he is a member of the Society of Tribologists and Lubrication Engineers (STLE) and the German Society for Tribology (GfT).
