Kaltenecker, Korbinian J. http://orcid.org/0000-0002-9831-6075
Gölz, Thorsten
Bau, Enrico
Keilmann, Fritz http://orcid.org/0000-0001-8334-2310
Funding for this research was provided by:
Ludwig-Maximilians-Universität München
Article History
Received: 26 August 2021
Accepted: 26 October 2021
First Online: 8 November 2021
Competing interests
: F.K. was cofounder of Neaspec GmbH and has received compensation as a scientific advisor to attocube systems AG, companies producing scattering-type scanning near-field optical microscope systems such as the one used in this study. K.K. and T.G. are full-time and part-time employees, respectively, of attocube systems AG. E.B. declares no competing financial interest.