J. Rodríguez-Viejo^5,6 and G. Baldi^1,†

• ¹Department of Physics, University of Trento, I-38123, Povo, Trento, Italy
• ²European Synchrotron Radiation Facility, B.P. 220, F-38043 Grenoble, France
• ³Laboratory of Polymer and Soft Matter Dynamics, Experimental Soft Matter and Thermal Physics (EST), Université libre de Bruxelles (ULB), Brussels 1050, Belgium
• ⁴Departamento de Física de la Materia Condensada, Condensed Matter Physics Center (IFIMAC), and Instituto Nicolás Cabrera (INC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
• ⁵Departamento de Física, Facultat de Ciències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
• ⁶Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain

• ^*Contact author: irene.festi@unitn.it
• ^†Contact author: giacomo.baldi@unitn.it