**About the Editor**

**Christophe Goupil** is a Professor at the University of Paris. Specialized in condensed matter physics, he successively contributed to the study of the pinning and the dynamics of vortices in superconductors, then directed his work towards the processes of energy conversion, in particular by the thermoelectric way. From 2010, he contributed to the foundation of the "Laboratoire Interdisciplinaire des Energies de Demain", UMR 8236, of which he is the Deputy Director. As the head of the DyCo team, he develops an out-of-equilibrium thermodynamic approach of coupled transport processes. The conversion of energy and matter are central to his work and are now applied in different domains of physics, including thermoelectricity, muscle physiology, and sport performance.
