Institution: | 1. Department of Technology for Biology and Health, CEA LETI‐MINATEC, 17 rue des Martyrs, 38054 Grenoble (France), Fax: (+33)?4‐3878‐5787;2. CNRS, Chimie et Photonique Moléculaire (CPM), 35042 Rennes (France);3. Université de Rennes 1, CPM, Campus de Beaulieu, Batiment 10?A, 35042 Rennes (France), Fax: (+33)?2‐2323‐6955 |