About the Authors

Luzius Brodbeck

luzius.brodbeck@mavt.ethz.ch

Affiliations Institute of Robotics and Intelligent Systems, Department of Mechanical and Process Engineering, ETH Zürich, 8092 Zürich, Switzerland, Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, United Kingdom

Simon Hauser

Affiliations Institute of Robotics and Intelligent Systems, Department of Mechanical and Process Engineering, ETH Zürich, 8092 Zürich, Switzerland, Biorobotics Laboratory, EPFL—Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland

Fumiya Iida

Affiliations Institute of Robotics and Intelligent Systems, Department of Mechanical and Process Engineering, ETH Zürich, 8092 Zürich, Switzerland, Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LB SH FI. Performed the experiments: LB SH. Analyzed the data: LB SH. Contributed reagents/materials/analysis tools: LB SH. Wrote the paper: LB SH FI.