About the Authors

Pravin Kumar

Affiliation Department of Physics, Huygens-Kammerlingh-Onnes Laboratory, Leiden University, Leiden, The Netherlands

Ine M. J. Segers-Nolten

Affiliation Nanobiophysics, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands

Nathalie Schilderink

Affiliation Nanobiophysics, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands

Vinod Subramaniam

Affiliations Nanobiophysics, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands, FOM Institute AMOLF, Amsterdam, The Netherlands

Martina Huber

huber@physics.leidenuniv.nl

Affiliation Department of Physics, Huygens-Kammerlingh-Onnes Laboratory, Leiden University, Leiden, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PK VS MH. Performed the experiments: PK. Analyzed the data: PK. Contributed reagents/materials/analysis tools: IS-N NS. Wrote the paper: PK VS MH.