1. Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, via G. Pascoli 70/3, 20133 Milano, Italy
2. Dipartimento di Energia, Politecnico di Milano, via Lambruschini 4, 20133 Milano, Italy
3. Department of Nanochemistry, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
4. Electron Microscopy facility, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
5. Material Characterization Facility, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
6. Department of Mechanical Engineering, Tufts University, 200 Boston Avenue, Medford, Massachusetts 02155, United States
7. Department of Chemical and Biomolecular Engineering, University of California, Irvine, California 92697, United States
8. CNR—Istituto di Scienze e Tecnologie Molecolari, via Golgi 19, 20133 Milano, Italy