Woessner, Achim http://orcid.org/0000-0002-5024-4201
Gao, Yuanda
Torre, Iacopo http://orcid.org/0000-0001-6515-181X
Lundeberg, Mark B.
Tan, Cheng
Watanabe, Kenji http://orcid.org/0000-0003-3701-8119
Taniguchi, Takashi
Hillenbrand, Rainer
Hone, James
Polini, Marco
Koppens, Frank H. L.
Article History
Received: 7 December 2016
Accepted: 19 May 2017
First Online: 26 June 2017
Competing interests
: R.H. is co-founder of Neaspec GmbH, a company producing scattering-type scanning near-field optical microscope systems such as the ones used in this study. All other authors declare no competing financial interests.