Christof M. Niemeyer is Professor of Chemistry at the University of Dortmund (Germany) where he holds the chair of Biological and Chemical Microstructuring. He was born in Cloppenburg and studied chemistry at the University of Marburg. He did his thesis at the Max-Planck-Institut für Kohlenforschung in Mülheim/Ruhr under the supervision of Manfred T. Reetz and his post-doctorate with Charles R. Cantorat the Center for Advanced Biotechnology in Boston (USA). He then went bock to Germany, where he worked with Dietmar Blohm at the University of Bremen to complete his habilitation before moving to Dortmund as a full Professor in 2002. He is interested in semisynthetic DNA-protein and -nanoparticle conjugates and their applications in life-sciences, catalysis and molecular nanotechnology. Chad A. Mirkin is the George B. Rathmann Professor of Chemistry and the Director of the Institute for Nanotechnology and the Center for Nanofabrication and Molecular Self-Assembly at Northwestern University in Evanston (USA). Professor Mirkin holds a B. S. degree from Dickinson College (1986) and a Ph.D. degree in chemistry from The Pennsylvania State University (1989). He was a NSF Postdoctoral Fellow at the Massachusetts Institute of Technology before becoming a chemistry professor at Northwestern University in 1991. Professor Mirkin is known for his development of nanoparticle-based biodetection schemes and his invention of Dip-Pen Nanolithography. He is the founder of two companies, Nanosphere and Nanolnk, which are commercializing nanotechnology applications in the life science and semiconductor industries.