1. Sapienza University of Rome,Engineering – DIMA,Dept. of Mechanical and Aerospace,Rome,Italy
2. Eindhoven University of Technology,Philips Research, Royal Philips,Microsystems section – Dept. of Mechanical Engineering,Eindhoven,the Netherlands
3. Eindhoven University of Technology,Microsystems section - Dept. of Mechanical Engineering,Eindhoven,the Netherlands