Transparent stretchable (TS) sensors capable of detecting and distinguishing touch and pressure inputs are a promising development in wearable electronics. However, realization of such a device has been limited by difficulties in achieving optical transparency, stretchability, high sensitivity, stability, and distinguishable responsivity to two stimuli simultaneously. Herein, we report a TS sensor in which touch and pressure stimuli can be detected and distinguished on a substrate with a stress-relieving three-dimensional (3D) microstructured pattern providing multidirectional stretchability and increased pressure sensitivity. The TS capacitive device structure is a dielectric layer sandwiched between an upper piezoresistive electrode of a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/ionic liquid composite, which enables touch and pressure stimuli to be distinguished, and a lower electrode of metal/indium tin oxide/metal multilayer. The TS sensor array was demonstrated as a wearable input device for controlling a small vehicle. The TS touch-pressure sensor has great potential to be used as a multimodal input device for future wearable electronics.

能够检测和区分触摸和压力输入的透明可拉伸（TS）传感器是可穿戴电子设备中的一项有前途的发展。然而，这种装置的实现受到难以同时实现光学透明性，可拉伸性，高灵敏度，稳定性和对两个刺激的可区分响应性的困难的限制。在本文中，我们报告了一种TS传感器，其中可以在应力消除的三维（3D）微结构化图案上检测并区分出衬底上的触摸和压力刺激，从而提供了多方向的可拉伸性和增加的压力敏感性。TS电容性装置结构是介电层，夹在聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）/离子液体复合材料的上压阻电极之间，能够区分触摸和压力刺激，以及金属/铟锡氧化物/金属多层板的下部电极。TS传感器阵列被证明是用于控制小型车辆的可穿戴输入设备。TS接触压力传感器具有巨大的潜力，可以用作未来可穿戴电子设备的多模式输入设备。