Pons-Valencia, P. http://orcid.org/0000-0001-8155-0722
Alfaro-Mozaz, F. J.
Wiecha, M. M. http://orcid.org/0000-0002-4485-1822
Biolek, V. http://orcid.org/0000-0003-3363-2859
Dolado, I.
Vélez, S. http://orcid.org/0000-0002-0019-2271
Li, P. http://orcid.org/0000-0003-3836-3803
Alonso-González, P. http://orcid.org/0000-0002-4597-9326
Casanova, F. http://orcid.org/0000-0003-0316-2163
Hueso, L. E. http://orcid.org/0000-0002-7918-8047
Martín-Moreno, L. http://orcid.org/0000-0001-9273-8165
Hillenbrand, R.
Nikitin, A. Y. http://orcid.org/0000-0002-2327-0164
Article History
Received: 24 March 2019
Accepted: 19 June 2019
First Online: 19 July 2019
Competing interests
: R.H. is co-founder of Neaspec GmbH, a company producing scattering-type scanning near-field optical microscope systems, such as the one used in this study. The remaining authors declare no competing interests.