Explore the fascinating world of interfaces between atomically precise metal nanoparticles and biomolecules in this 47-minute conference talk by Hannu Häkkinen from the University of Jyvaskyla. Delve into the prospects and challenges of this cutting-edge field as part of the KITP Conference on Structure Design and Emerging Phenomena in Nanoparticle Assemblies. Gain insights into the hierarchical approach to functional materials operating at the mesoscale, where atomic nature meets structural complexity. Discover how this interdisciplinary field combines chemistry, materials science, chemical engineering, and physics to create innovative nanoparticle assemblies. Learn about recent developments and future directions in this rapidly evolving area of research, including key physics concepts and potential technological breakthroughs.