Hydrogel Microrobots Self-Assembled into Ordered Structures with Programmable Actuation. - Jindrich Kropacek; Charlie Maslen; Bertjan van Dijk; Agustin Iniguez-Rabago; Johannes T. B. Overvelde; Alexandr Zubov; Jan Vrba; Petr Cigler; Frantisek Stepánek; Ivan Rehor (Adv. Intell. Syst., 2023)