1. Department of Chemical Engineering ENTEG Institute, Faculty of Science and Engineering, University of Groningen Groningen The Netherlands
2. George & Josephine Butler Polymer Research Laboratory, Department of Chemistry University of Florida Gainesville Florida USA
3. Center for Micro‐BioRobotics, Istituto Italiano di Tecnologia Pontedera Italy
4. Department of Chemistry and Industrial Chemistry University of Pisa Pisa Italy
5. CISUP, Centro per l'Integrazione della Strumentazione dell'Università di Pisa Pisa Italy