Hydrogel‐Based Millirobots: Reconfiguration, Camouflage, and Color‐Shifting for Bioinspired Adaptive Hydrogel‐Based Millirobots (Adv. Funct. Mater. 10/2020)

In article number 1909202, Xuemin Du, Xinyu Wu, and co-workers develop an octopus-inspired untethered soft millirobot with magnetic actuation solely in the head and multiple functions in the tail. Due to the seamless integration of its bio-inspired design and smart materials, the millirobot not only shows robust multimodal locomotion, but also possesses extraordinary environment-adaptive functions in water, for example, an octopus-like squeezable body, optical camouflage, and variable appearance via visible color-shifting for interaction with the changing environment.