Mechanochemical-Induced Swelling-Activation of a Gastric-Deployable 4D-Printed Polypill Inspired by Natural Hygromorphic Actuators. - Konstantina Chachlioutaki; Nikolaos Papas; Zisis Chatzis; Orestis Katsamenis; Stephanie K. Robinson; Konstantinos Tsongas; Nikolaos Bouropoulos; Dimitrios G. Fatouros; Dimitrios Tzetzis; Christina Karavasili (Adv. Intell. Syst., 2025)