1. Laboratorio
IdEA, Dipartimento di Fisica, Università di Trento, via Sommarive
14, I-38123 Povo, Trento, Italy
2. Department of Physics and National Centre for Nanosciences & Nanotechnology, University of Mumbai, Vidyanagari, Santacruz (E), Mumbai 400098, India
3. Edinburgh Instruments
Ltd., Livingston EH54 7DQ, United Kingdom
4. Department
of Industrial Engineering, Università di Trento, Via Sommarive
9, I-38123 Povo, Trento, Italy