Résumé : The nano-revolution has established control of particle size and the manipulation of molecular structures. Atoms are the chemists’ building block and the ultimate limit of heterogeneous catalyst preparation; achieving atomic control is an on-going challenge in the field of catalysis which this book addresses. Each chapter presents a different approach to the problem, drawing on the latest developments in the field. With techniques bridging the gap between surface science and heterogeneous catalysis the book presents a tool-kit for anyone wishing to prepare and define solid catalysts.