1. Institute of Systems and Robotics Department of Electrical and Computer Engineering University of Coimbra Coimbra 3030–290 Portugal
2. Centro de Química de Coimbra‐Institute of Molecular Sciences (CQC‐IMS), Department de Química Universidade de Coimbra Coimbra 3004‐535 Portugal
3. Faculty of Sciences and Letters, Dept. of Physics Istanbul Kultur University Ataköy Campus, Bakirköy Istanbul 34156 Turkey
4. Soft Machines Lab, Department of Mechanical Engineering Carnegie Mellon University Pittsburgh PA 15213 USA