Synergistic Structured Flexible Pressure Sensors With Definable Operation Characteristics

ABSTRACT Flexible pressure sensor empowers the perception of external mechanical stimuli with flexible electronics. The adequate alignment between the sensor's operation characteristics and the application scenarios is crucial for maximizing performance. Achieving the configuration of sensitivity and response threshold within single device framework is expected to significantly enhance the versatility of flexible pressure sensor across a variety of applications. In this work, we present a synergistic structural design (SSD) for flexible iontronic pressure sensor to facilitate on‐demand configuration of device characteristics. By incorporating a customizable spacer gasket structure and an interlocked microstructure within the ionic gel, the response threshold can be adjusted to cover both small‐pressure detection and large operational ranges. With the rational SSD configuration, the SSD‐based sensor achieves a sensitivity reaching up to 1478.8 kPa −1 , along with a tunable response threshold from 11.2 Pa to over 400 kPa. We demonstrate the potential of the SSD‐based sensor for diverse human interactions applications. Furthermore, a scalable array of the SSD‐based sensor units enables multitouch pressure mapping. The SSD approach provides a versatile strategy for tailoring the characteristics of flexible pressure sensor to meet varying application needs.