Dr. Wolfgang Wernsdorfer, born in Wuerzburg, Germany, in 1966, received his education in Physics in Wuerzburg, Lyon, and then Grenoble, where he is at present Research Director at the CNRS. During his PhD in the low-temperature laboratory (Grenoble) Wolfgang Wernsdorfer and collaborators developed a unique device (micro-SQUID) for measuring magnetic properties of nanostructures with a billion times higher sensitivity than commercial magnetometers. Using the unique advantages of this device, he has studied a variety of peculiar phenomena in depth, such as tunnelling of magnetization in molecular clusters, leading to the Agilent Europhysics Prize in 2002. Over the years, the innovative approach to such studies combined with the recognized superiority of this micro-SQUID have led to worldwide collaboration with most other notorious groups working on synthesizing molecular magnets to investigate single-molecule magnet behavior in more than 350 systems. The leading work in this field is at the heart of today’s knowledge on molecular magnetism. His most recent project concerns molecular spintronics, that is the fabrication, characterization and study of molecular devices (carbon nanotube and graphene based devices) in order to read and manipulate the spin states of the molecule and to perform basic quantum operations. The main target for the coming years concerns fundamental science, but applications in quantum electronics are expected in the long run.