This study presents the development of a highly sensitive and flexible capacitive pressure sensor utilizing an ionic hydrogel dielectric layer with a lateral-bending microstructure. The lateral-bending microstructure was inspired by the deformation response of grass under pressure, which exhibits localized deformation under slight compressive loads. This unique design results in enhanced sensitivity at low pressures (<1 kPa), achieving a sensitivity of 2.79 kPa⁻¹, significantly outperforming other microstructures. The sensor maintains stable signal changes even after 13 000 cycles of loading stress tests, demonstrating robust reliability and a wide working range from 78 Pa to 11 kPa. The biocompatibility of ionic hydrogels suggests their potential applications in wearable biosensors for monitoring human motion. The digital light processing technique allows for the rapid and cost-effective fabrication of microstructures, contributing to the high performance and versatility of sensors. This research opens new possibilities for the development of intelligent wearable devices with precise tactile sensing capabilities.

Chemical oxidation of graphite and subsequent exfoliation allow the large‐scale production of isolated graphene oxide (GO), in which the induced oxygen‐containing functional groups on GO surface were then removed by means of reduction processes. The residual functional groups including carbonyl, hydroxyl and epoxy groups as well as the newly formed defects, significantly influence the physical properties of reduced GO (RGO). Here, RGO structures were generated through a thermal reduction process of GO using molecular dynamics simulations, in which the transformation of functional groups and the formation of non‐hexagonal rings/defects were captured. The results suggested the formation of two RGO structures with different contents of functional groups at C/O ratios of about 11 and 13. These structures were obtained using various durations of the thermal reduction process. The dependence of tensile behaviour of RGOs on the structure and chirality as well as the influence of temperature on the tensile properties of RGOs were also evaluated. It was found that the strength and Young's modulus of RGOs decreased as a result of the residual functional groups and newly formed defects, and were decreased with the environment temperature.