1. Department of Physics and Astronomy Soft Matter and Biophysics Unit KU Leuven, Celestijnenlaan 200D‐ box 2416, 3001 Leuven Belgium
2. Department of Materials Engineering KU Leuven, Kasteelpark Arenberg 44 ‐ box 2430, 3001 Leuven Belgium
3. Department of Chemical Engineering Soft Matter, Rheology and Technology Division KU Leuven, Celestijnenlaan 200J‐ box 2424, 3001 Leuven Belgium
4. Biomaterials and Regenerative Medicine Group, IMDEA Materials Institute C/Eric Kandel, 2 Getafe Madrid 28906 Spain