Research Progress of Flexible Strain Sensors Based on Biomimetic Structures
As the core component of wearable devices,the flexible strain sensors play a particularly important role in various fields.However,the function of the existing sensor is limited by the traditional conductive layer structure.A large number of researchers have introduced the micro-nano structure of animals and plants in nature into the sensor to give it more excellent performance.In this paper,the research progress of bionic flexible strain sensor is reviewed from the aspects of functional layer structure,preparation method and bionic structure.Firstly,the conductive layer structure of flexible strain sensor and the method of improving durability are summarized.Secondly,the preparation methods of bionic flexible strain sensors are concluded.Finally,the bionic structure types of the sensor are discussed from three aspects:animals,plants and components.In order to improve the excellent electrical properties of the strain sensor while obtaining more similar biological functions to organisms,more efforts should be devoted to the development of production and preparation processes for more effective replication of animal and plant microstructures and the improvement of bionic types applied to strain sensors in the future.
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