1. Complex Fluids and Flows Unit, Okinawa Institute of Science and Technology Graduate University, 1919–1 Tancha, Onna-son, Okinawa 904-0495, Japan
2. Gran Sasso Science Institute, Viale F. Crispi 7, 67100 L'Aquila, Italy
3. Department of Civil, Chemical and Environmental Engineering (DICCA), University of Genova, Via Montallegro 1, 16145 Genova, Italy
4. INFN, Genova Section, Via Montallegro 1, 16145 Genova, Italy