Nanoscience: Special Issue Dedicated to Professor Paul S. Weiss

It has been a pleasure to jointly edit this special issue of Aggregate honoring the contributions Professor Paul S. Weiss nanoscience. We have known and worked with for many years, one us initially as postdoctoral trainee (Shelley A. Claridge), other fellow ACS editor (Bin Liu). In addition his prolific scientific career, is an outspoken advocate scientists, inspiring teacher, source boundless energy (fueled by quadruple shots espresso). Paul's career spanned vast range topics, providing broad foundation building global nanoscience community. His early work ranged from laser spectroscopy excited atom reactions in crossed molecular beams use scanning tunneling microscopy control characterize atoms on metal surfaces vacuum. Today, research group explores science even more broadly, mechanistic studies individual switches motors nanostructured tools studying brain human health. Thus, he able bring atomic- molecular-scale perspectives bear solving difficult problems complex environments, such high-throughput gene editing cellular therapies targeting genetic diseases cancer immunotherapy. More than 100 graduate trainees take these interdisciplinary them into world nanoscience; some contributed Special Issue. Building bridges across disciplines at heart aspects So perhaps it no surprise that outsize also arisen part gifts bringing people together, boundaries well international boundaries. talks draw audiences humor stories, sometimes using heads audience members front row atoms, running up down illustrate how probe images atomic scale. role Director California NanoSystems Institute beyond, years expand impacts outside lab, through technology commercialization, interactions Hollywood art community, general public. He helped shape public policy, including working team scientists develop roadmap BRAIN Initiative. enthusiasm talent storytelling help him connect everyone – Nobel laureates actors high school students. Many articles Issue come network who throughout These collective behaviors molecules clusters, surface engineering applications nanomaterials. Looking forward future nanoscience, exciting consider possibilities new materials will arise not just particles, but community build. explore upcoming years. Bin Liu, Shelley Claridge,, Guest Editor