Nian Zhang, Yaozhuo He, Liu Wang
Iontronic pressure sensors (IPSs) have emerged as a promising technology for wearable electronics and electronic skin due to their ultra-high specific capacitance and biomimetic sensing capabilities. However, their performance remains limited by signal drift, hysteresis, and crosstalk that arise from coupled electro-mechanical processes across multiple length scales. Understanding and utilizing multiscale mechanics - from nanoscale ionic transport and interfacial energy to microscale contact deformation and macroscale structural integrity - are therefore essential for rational IPS design. By bridging these scales, mechanics principles enable balanced improvements in sensitivity, linearity, and stability, guiding the creation of high-performance iontronic sensing systems for next-generation electronic skins and healthcare applications.