Leonhard Grill completed his PhD in experimental physics in Italy and Austria in 2001 and currently leads the research group “Nanoscale Science” in the department of Physical Chemistry at the Fritz-Haber-Institute of the Max-Planck-Society in Berlin. He is also adjunct reader (Privatdozent) at the Physics Department of the Free University Berlin. Grill is the author of more than 50 publications and received the “Young Leaders in Science” scholarship from the Schering Foundation (2010-2011) and the Feynman Prize in Nanotechnology (2011). His research focuses on the imaging and manipulation of matter on surfaces using scanning probe microscopy, in particular molecules that carry a specific mechanical, optical, electronic or electrical function. Christian Joachim is “Exceptional Class” CNRS Director of Research, in the nanoscience group at CEMES/CNRS (www.cemes.fr/GNS/) and adjunct Professor of Quantum Physics at Sup’Aero (ISAE) Toulouse. In Singapore, he is A*STAR VIP at IMRE for atom technology and head of the WPI MANA-NIMS satellite in Toulouse. He has coordinated European projects like "Bottom-up Nanomachines" and “Pico-Inside” and is currently coordinating the large European integrated project AtMol (www.atmol.eu) (2011-2014) to construct the first ever molecular chip. He is the author of more than 200 scientific publications (h=49) and has presented over 300 invited talks on electron transfer through a molecule, STM and Atomic Force Microscopy (AFM) image calculations, tunnel transport through a molecule, molecular devices, nanolithography and single molecule machines. He received the CNRS Silver Medal in 2001 and the Feynman Prize in Nanotechnology in 1997 and 2005. Christian Joachim is Series Editor of "Advances in Atom and Single Molecule Machines".