Affiliation: | 1. Department of Biomolecular Engineering, Philips Research Europe, High Tech Campus 11, 5656 AE Eindhoven (The Netherlands), Fax: (+31)?40‐27‐44906 http://www.research.philips.com;2. Department of Materials Analysis, Philips Research Europe (The Netherlands);3. Molecular Nanofabrication Group, University of Twente, Enschede (The Netherlands);4. Department of Biomolecular Engineering, Eindhoven University of Technology (The Netherlands) |