AbstractFlexible pressure sensors play a significant role in wearable devices and electronic skin. Iontronic pressure sensors with high sensitivity, wide measurement range, and high resolution can meet requirements. Based on the significant deformation characteristics of alveoli to improve compressibility, and the ability of the arch to disperse vertical pressure into horizontal thrust to increase contact area, a graded hollow ball arch (GHBA) microstructure is proposed, greatly improving sensitivity. The fabrication of GHBA ingeniously employs a double‐sided structure. One side uses mold casting to create convex structures, while the other utilizes the evaporation of moisture during the curing process to form concave structures. At the same time, a novel side‐by‐side package structure is proposed, ensuring pressure on flexible substrate is maximally transferred to the GHBA microstructure. Within the range of 0.2 Pa–300 kPa, the iontronic pressure sensor achieves a maximum sensitivity of 10 420.8 kPa−1, pressure resolution of 0.1% under the pressure of 100 kPa, and rapid response/recovery time of 40/35 ms. In wearable devices, it is capable of monitoring dumbbell curl exercises and wirelessly correcting sitting positions. In electronic skin, it can non‐contactly detect the location of the wind source and achieve object classification prediction when combined with the CNN model.

Anti-ultraviolet performance of different silk fabrics is researched, and the perfermance before and after dyeing and finishing are also studied. The main factors affecting anti-ultraviolet are discussed and process of anti-ultraviolet finishing is optimized. Based on the research, application range of anti-ultraviolet finishing for silk fabrics are determined. The results show that the optimal process is using padding method, finishing agent 6001 30 g/L, drying at 130 ℃ for 60 s, the finished light silk fabrics (50100 g/m2) can obtain good anti-ultraviolet performance.