Claude LECOMTE is a professor of physics, specialized in condensed matter and crystallography at the University Henri Poincaré – Nancy 1 and directs the CNRS Mixed Research Unit “crystallography laboratory and modeling of mineral and organic materials”. His research at the intersection of physics, chemistry and biology, concern the methodology of high resolution X-ray diffraction and the modeling of electronic density; He applies these methods to materials, molecular crystals and proteins. He was president of the French association of crystallography from 1995 to 2000 and of the European Association from 2000 to 2003. He is currently a member of the executive committee of the International Union of Crystallography. He is the author of over 200 publications in international journals. He is or has been a member of numerous national and international (ESRF, SPRING8) and scientific committees (LURE, National Research Committee section 05, section CNU 28). He is a member of the board of directors of the Franco-German University since 2003 and is scientific delegate at the AERES since September 2008.