Design Of The Flexible Intelligent Films And Study Of Their Sensing And Actuation Deformation

Flexible intelligent devices can responsive to external stimulus signals and generate corresponding feedback,they are widely used in intelligent sensors,actuator,and software robotics.With the development of the next generation of intelligent wearable systems,there is a higher demand for the functional and integrated design of flexible intelligent devices.However,due to the different response mechanisms,flexible intelligent devices including sensors and actuators have the single function and cannot achieve their versatility.Simple integration of sensors and actuators will increases the difficulty of system design and preparation,which is not conducive to the highly flexible wearable of the intelligent devices.Therefore,how to realize the integration of sensor and actuator becomes an important challenge in the development of flexible intelligent devices.To solve this scientific problem,we have constructed a multifunctional wearable flexible intelligent device based on asymmetric structure paper-based graphene film,to realize the identification of human physiological activities and the actuation performance.The paper-based graphene film with an asymmetric structure was prepared by a simple method.Using the film as a flexible mechanical sensor,it can detect the bending deformation in different directions and achieve the quickly response.The sensor can be attached to the human body or clothing to monitor a range of human activities from the wide range to the weak signal,which including the finger and wrist bending motions,pulse beat,and finger touch.Based on the intelligent film,we also constructed an optical actuator with fast response and large deformation.Through the analysis of theory and finite element simulation,the influencing factors of the optical actuator’s photo-deformation are explored to optimize the performance of the flexible actuators,and the bionic actuating devices such as bionic flowers,intelligent crawling robots,and bionic intelligent legs were designed through mechanical analysis.Further,the flexible light-driven smart device with self-sensing and the multifunctional wearable flexible smart device with photo-deformation and mechanical sensing are constructed.The above research work reveals the great potential of multi-functional intelligent devices with sensing-actuation integrated in the next generation of smart wearable systems.