Cocker, T. L. http://orcid.org/0000-0001-7813-0508
Jelic, V. http://orcid.org/0000-0003-0020-5156
Hillenbrand, R. http://orcid.org/0000-0002-1904-4551
Hegmann, F. A. http://orcid.org/0000-0002-5009-5832
Article History
Received: 9 December 2020
Accepted: 25 May 2021
First Online: 30 July 2021
Competing interests
: R.H. is a co-founder of Neaspec GmbH, a company producing scattering-type scanning near-field optical microscope systems, such as the ones described in this Review. The remaining authors declare no competing interests.