Geographical concentration of economic activities has been widely discussed. However, the insights into other kinds of concentration such as technological and organizational concentration have been scarce. Here, we analyze organizational, technological and geographical concentration of nanotechnology activities in the Netherlands. We discuss our results in the light of the Dutch strategy to concentrate nanotechnology research organizationally, technologically and geographically during the last

more »

... ecade. Currently, this strategy is successful but will only be so if it remains open to changes in the technology itself and its environment.