This map shows the relatively rare event that multiple scientific specialties merge to form a new area of science, here Nanoscience & Technology. Using aggregated citations among journals obtained from Journal Citation Reports (JCR) of the Science Citation Index-Expanded, the evolution of nanoscience and nanotechnology is animated for 1998-2003. During the late 1990s, journals in the field of applied physics increasingly cite Nanotechology. Thereafter, chemistry journals begin to publish relevant works. In 2000, Science plays a crucial role in the reorganization of (inter)disciplinary relations among relevant journals. Shortly thereafter, Nanotechnology, as a specialist journal takes over the lead from Science. New journals emerge in the subsequent years, among them Nano Letters published by the influential American Chemical Society since 2001. As could be expected, this latter journal takes the lead in terms of the number of citations it attracts and its impact factor. While the multidisciplinary journal Science continues to impact the fine-grained citation environment of the new scientific area, the journal Nanotechnology loses its catalyzing function at the interface of applied physics and physical chemistry.