About the Authors

Murali Krishna Ghatkesar

Contributed equally to this work with: Murali Krishna Ghatkesar, Thomas Braun

Affiliations National Center of Competence for Research in Nanoscience, Institute of Physics, University of Basel, Basel, Switzerland, California Institute of Technology, Pasadena, California, United States of America

Hans-Peter Lang

Affiliation National Center of Competence for Research in Nanoscience, Institute of Physics, University of Basel, Basel, Switzerland

Christoph Gerber

Affiliation National Center of Competence for Research in Nanoscience, Institute of Physics, University of Basel, Basel, Switzerland

Martin Hegner

martin.hegner@tcd.ie (MH); braun.thomas@mac.com (TB)

Affiliation CRANN, SFI Nanoscience Institute, Trinity College, University of Dublin, Dublin, Ireland

Thomas Braun

Contributed equally to this work with: Murali Krishna Ghatkesar, Thomas Braun

martin.hegner@tcd.ie (MH); braun.thomas@mac.com (TB)

Affiliations National Center of Competence for Research in Nanoscience, Institute of Physics, University of Basel, Basel, Switzerland, CRANN, SFI Nanoscience Institute, Trinity College, University of Dublin, Dublin, Ireland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TB. Performed the experiments: MKG. Analyzed the data: MKG. Contributed reagents/materials/analysis tools: HPL CG MH TB. Wrote the paper: MKG HPL TB. Software for data analysis: TB.