Editing the Shape Morphing of Monocomponent Natural Polysaccharide Hydrogel Films
The shape-morphing behaviors of CS hydrogel films via changing the thickness () and the length-to-width () ratios. (a) Schematic illustration of the shape-morphing behaviors (bending moments of at the -axis direction and at the -axis direction) of CS hydrogel films (certain length and width) via changing the thickness (). (b) The phase diagram of shape evolution of CS hydrogel films with different ratios and thicknesses (). (c) Pictures of CS hydrogel films with different thicknesses (10 μm, 20 μm, 40 μm, and 80 μm) and certain lengths and widths () show various deformations, including no bending, long-side rolling, helix, and short-side rolling. (d) Pictures of CS hydrogel films with different ratios (1, 2, 6, and 12) and certain thickness (80 μm) show various deformations, including diagonal rolling, short-side rolling, and helix. The scale bars are 5 mm.