Based on the analysis of two clusters in nanotechnologies (MESA+ in the Netherlands and Minatec in Grenoble in France), the paper examines the emergence and effects of technological agglomeration. The social and technical arrangements of a regional centre for nanotechnology both enable and...

In the case of new technologies like nanotechnology, institutional entrepreneurs appear who have to act at different levels (organizational, regional, national) at the same time. We reconstruct, in some detail, the history of two cases, in Grenoble and in Twente/Netherlands. An intriguing...