Peter Childs, FREng, is the Professorial Lead in Engineering Design and Innovation Design Engineering. He is Professor at Large, Co-Director of the Energy Futures Lab, and was Founding Head of the Dyson School of Design Engineering at Imperial College London. His general interests include creativity, innovation, design, fluid flow and heat transfer, energy and robotics. Prior to his current post at Imperial, he was director of the Rolls-Royce supported University Technology Centre for Aero-Thermal Systems, director of InQbate and professor at the University of Sussex. He has contributed to over 200 refereed journal and conference papers, and several books including the Handbook on Mechanical Design Engineering (Elsevier, 2013, 2019) as well as temperature measurements and rotating flow. He has been principal or co-investigator on contracts totaling over £100 million. He is Editor of the Journal of Power and Energy, Professor of Excellence at MD-H, Berlin, and Chairperson at BladeBUG Ltd and Founder Director and Chairperson at QBot Ltd.Dr Marc Masen is Reader in Tribology and Mechanical Engineering Design in theDepartment of Mechanical Engineering, Imperial College London. He is the AcademicLead in Mechanical Engineering Design. His expertise includes the response of materials tomechanical contact and interaction, with a special focus on materials showing nonlinear and complex behaviour; such as polymers, elastomers, greases, and biologicaltissue. He designs, builds, and adapts advanced tribometers to gain new insights intothe behaviour of these materials. Within the Tribology research group, he collaboratesclosely with a range of companies, including SMEs and multinationals such as L'Oréal,Shell and SKF. He is the co-editor of the journal Biotribology and sits on the editorialboard of Proceedings of the Institution of Mechanical Engineers Part J - Journal ofEngineering Tribology. He teaches on a range of modules, including MechanicalTransmissions, focusing on machine elements such as shafts, gears, bearings andcouplings.