Fig. 1: Design and fabrication of silicotungstic acid (SiW)-complexed R32 protein hydrogels.
From: Programmable adhesion and morphing of protein hydrogels for underwater robots

a Proposed design principle of the R32 hydrogels. b Schematic illustration of the key process for complexation between crosslinked R32 and SiW. Created with BioRender.com. c The as-prepared ball-like hydrogel can be remolded into different shapes, such as a cube, a rope and a leaf. d SEM images of the microfibril structures in the hydrogels. Data in (c) and (d) are representative of n = 2 independent experiments.