2.2.2. Impacts of structure design
The impact of different surface structures on hydrogels can lead to variations in heat absorption,[53] moisture retention,[54] wear resistance, etc. For mechanical or wearable devices, the overall shape of the hydrogel can be molded according to the specific needs of the device, facilitating effective heat dissipation. Furthermore, to achieve an optimal morphology, the microstructure of hydrogels should be intentionally designed based on actual requirements.[54–59]