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High performance fiber composites can also be used to fabricate artificial peripheral sensory nerve devices

Time : 2021-08-09 Hits : 9

High performance fiber refers to the chemical fiber with special physical and chemical structure, performance and use, or with special function. High performance fiber composites are made of high performance fiber as reinforcement material and resin as matrix. With light weight, high strength and high mold, fatigue resistance, corrosion resistance, strong design, easy to process and molding and other excellent properties, it is widely used in aerospace, national defense, transportation, industrial engineering, geotechnical construction, and biological medicine and electronic industry and other fields.

Scientists from China and Singapore have demonstrated a high-performance fibrous composite made of carbon nanotubes, polyester fibers and rubber bodies that can be used as key components to build different artificial exoreceptors and proprioceptive receptors for the artificial peripheral sensory nervous system. Through clever structural design, both receptors have excellent stretchability and fast response time. Combined with a flexible circuit, the artificial peripheral sensory nerve device can accurately detect the bending changes of different joints, which can be used for virtual piano volume adjustment, wireless typing, entertainment interaction, etc. It provides an important sample for the research of high performance and multi-function integrated artificial peripheral sensory nervous system and lays an important perceptual foundation for the development of intelligent prosthesis and soft robot.

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Biological inspiration and design ideas of bionic receptor

The peripheral sensory nervous system includes external sensation and proprioception. When interacting with external objects, the peripheral sensory nervous system provides the body with the necessary sensory information to make decisions. An exoceptor is a sensory tissue or part of the body, such as the eye, ear, nose, or skin, that recognizes external stimuli to the body. These different stimuli in the external environment (including light, sound, gas, and pressure) can be converted into sensory nerve impulses through different external receptors and then transferred from the afferent nerve to the corresponding sensory center to produce different sensations. Through exoceptors, the human body produces external sensations and learns the characteristics of external objects. Proprioceptors are sensory tissues located in the blood vessels, skin, or muscles that provide information about the body's movement and the position and status of limbs and other organs. Muscle tension and stress, as well as joint flexion, can be converted into nerve impulses through different proprioceptors. The cerebral cortex can then receive nerve impulses through neural pathways and the spinal cord. In this way, people develop proprioception.

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Performance of stretchable fiber-type functional composites and artificial body sensors

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Performance and characteristics of artificial external receptors

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Integrated artificial peripheral sensory nervous system and flexible circuit application

The research content is "An artificial peripheral neural system based on highly stretchable and integrated multifunctional "Sensors" was published in the latest Advanced Functional Materials.

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