1. International School for Advanced Studies (SISSA/ISAS), Trieste 34136, Italy.
2. Department of Life Sciences, University of Trieste, Trieste 34127, Italy.
3. NanoInnovation Laboratory, ELETTRA Synchrotron Light Source, Trieste 34149, Italy.
4. Department of Physics, University of Rome Tor Vergata, Rome 00173, Italy.
5. Department of Chemical and Pharmaceutical Sciences, University of Trieste, Trieste 34127, Italy.
6. Carbon Nanobiotechnology Laboratory, CIC biomaGUNE, Paseo de Miramón 182, 20009 Donostia–San Sebastián, Spain.
7. Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain.