Stimulus-responsive gradient hydrogel micro-actuators fabricated by two-photon polymerization-based 4D printing

A gradient 2PP-based #4Dprinting strategy tailors hydrogel crosslinking to create multilayer #microactuators with greater bending, faster response cycles, and enhanced performance, enabling advances in #softrobotics and #microfluidics.
Nanotechnology Reviews: doi.org/10.1515/ntre...