Ultrasensitive flexible pressure sensors hold immense promise for applications in human health monitoring, intelligent medical devices, electronic skin, human-machine interfaces, and more. Traditionally, enhancing the sensitivity of these sensors has involved the integration of microstructures through techniques such as lithography, etching, and 3D printing. However, these methods often lead to increased complexity and cost in sensor fabrication, hindering their widespread implementation in practical scenarios. In this study, we present an innovative ultrasensitive wearable flexible pressure sensor inspired by the microstructure of butterfly wings, achieving a remarkable sensitivity of up to 12.99 kPa⁻¹. Utilizing finite element analysis (FEA) simulations, we elucidate the sensing mechanism underlying the pressure sensor and detail the dynamic contact process between the sensitive layer and electrodes. Furthermore, we have successfully employed this pressure sensor to monitor various human physiological activities. To tackle challenges related to power supply and data transmission, we developed a wireless real-time monitoring (WRM) system leveraging advanced wireless transmission technologies. This design not only provides a novel approach to manufacturing ultrasensitive flexible pressure sensors through simplified processes at lower costs but also introduces a groundbreaking concept for next-generation wireless flexible wearable devices.
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