Recent progress in the fabrication and applications of flexible capacitive and resistive pressure sensors

Flexible capacitive and resistive pressure sensors are promising candidates due to their various artificial intelligent applications, human body physiological monitoring, medical diagnostic systems, human-machine interaction, and electronic skin. The key functional parameters and transduction mechanisms decide the performance and applications of any pressure sensors. In recent years, various reports on flexible pressure sensing devices with colossal improvement in the key parameters has been reported. In this review article, a brief introduction about working principle of the transduction mechanism, key parameters, and sensors functional materials is described. Later, a summary has been provided on the recent developments in the flexible pressure sensors with their key parameters, namely sensitivity, response time, and limit of pressure detection. A brief study about the various applications of the sensing devices in human motion, healthcare monitoring, human-machine interaction and electronic skin are also discussed. This review article will provide a innovative direction to the readers working in this field to improve the pressure sensor's quality and to explore their applications.