1. Galatea Laboratory STI/IEM Ecole Polytechnique Fédérale de Lausanne (EPFL) 2002 Neuchâtel Switzerland
2. Department of Materials Science and Engineering Tokyo Institute of Technology Tokyo 152–8552 Japan
3. Department of Electronics and Telecommunications Polytechnic University of Turin 10129 Turin Italy
4. Department of Applied Science and Technology and INSTM RU Polytechnic University of Turin 10129 Turin Italy
5. Department of Engineering and Architecture and INSTM RU University of Parma 43124 Parma Italy