"Materials for Tomorrow" is a specialized book that addresses the key role of materials science in technological development. It highlights the connections between physics, chemistry, and engineering, demonstrating how crucial the understanding and development of new materials are for the future. The content is based on lectures from the Heraeus Summer School, which took place in October 2004 at the Technical University of Chemnitz. Given the rapid developments in the communications industry, it becomes clear that a significant portion of current research focuses on materials used in nanometer-sized devices. The book provides insights into various materials that are already in use today or are expected to be utilized in the near future. It is a valuable resource for students and professionals who are engaged with the challenges and opportunities of materials science.