This paper analyzes the emergence of new technology-based sectors at the regional level focusing on nanotechnology, an infant technology whose evolution can be traced on the basis of patent application filings. We employ a methodological framework based on the ‘product-space’ approach, to...

In this introduction, we review the arguments that underpin the rationale for the special section, and provide a structured sequence for the contents of the six selected papers that comprise the section.

This paper elaborates a view on knowledge as a result of a combinatorial search activity, so as to investigate its effects on economic growth at the regional level. Empirical estimations corroborate the hypothesis that knowledge coherence and variety, besides the traditional measure of knowledge...