Flower‐Inspired Flexible Pressure Sensor Arrays With Suppressed Crosstalk and Enhanced Sensitivity for Stable Tactile Perception

ABSTRACT High‐performance flexible pressure sensor arrays are essential for precise monitoring under complex dynamic conditions. However, the inherent trade‐off between sensitivity and crosstalk suppression, coupled with inadequate device consistency, continues to hinder their practical deployment. Inspired by flower morphology, this work presents an integrated four‐unit circular flexible pressure sensor array (CFPSA). The shared conductive layer design substantially enhances inter‐unit consistency and structural stability, while the circular geometry confers distinct advantages in circumferential pressure detection. To reconcile high sensitivity with low crosstalk, the shared conductive layer incorporates a carbon‐based composite with hemispherical microstructures, and a spacer layer is introduced between the electrodes and the conductive layer. Through the synergistic mechanisms of mechanical isolation—whereby the spacer layer suppresses lateral strain transfer—and the tunneling effect within the compressed conductive layer, the CFPSA achieves a mechanical crosstalk as low as −41.14 dB, alongside a sensitivity of 485.5 kPa − 1 , excellent linearity ( R 2 = 0.993), and robust cyclic stability (10 000 cycles) over a broad pressure range of 500 kPa. An extended eight‐unit array (8‐CFPSA) further demonstrates high sensitivity (404.9 kPa − 1 ) and low crosstalk (−38.1 dB), highlighting the scalability of this design. These arrays hold considerable promise for wearable motion monitoring, healthcare, and related applications.