Release date: 2018-06-08
The reporter learned from Nankai University on the 7th that the Xu Wentao team of the School of Electronic Information and Optical Engineering collaborated with scientists from the United States and South Korea to develop the world's first flexible artificial tactile nerve, making smarter artificial skin one step closer to reality. . The research results were published in the latest issue of the international journal Science.
Human skin is an extremely complex system in which thousands of sensors are used to sense information such as pressure, temperature, and location. This information is converted into neural signals that are transmitted step by step in the peripheral and central nerves. If you can give your robot a skin-like touch that senses temperature, stress, and even nerve activity, they will “unlock†more new skills. In the experiments of scientists in China, the United States and South Korea, the flexible organic materials were successfully used to simulate the human body-like SA-I haptic nerve. The artificial sensory nerve consists of three core components: a resistive pressure sensor, an organic ring oscillator, and a synapse transistor. The system first uses a series of susceptors to sense extremely subtle pressures and produce corresponding voltage changes, which are then converted into electrical impulse signals by ring oscillators (artificial nerve fibers). The electrical signals obtained by the plurality of ring oscillators are converted into synaptic currents by synaptic transistor integration, which in turn is transmitted to the next level of nerves.
According to reports, this kind of artificial nerve can simulate the human skin tactile function well, can be compatible with the biological nerve signal, and creatively create flexible artificial sensory nerve, and realize the hybrid reflex arc formed by artificial nerve and animal nerve. . Researchers have successfully used their connection to the lame and motion control to initially confirm this compatibility.
This artificial neural tactile system has good biocompatibility, flexibility and high sensitivity. It can be applied to the realization of the perception of the human limbs compatible with the human nervous system. The flexible and lightweight structure will make the related products have good comfort. It has potential implications for the treatment of neurological diseases. At the same time, this artificial nerve can be applied to software robots to achieve human-like perception and to replace human work in extreme environments.
Source: Technology Daily
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