Stretchable touch material is expected to make artificial skin

In daily life, we are already very accustomed to the application of touch screens. Now, researchers at Stanford University in the United States are planning to expand this set of technologies and apply them to a wider range of fields. This will affect many consumer products. Technology, robotics, and other areas have far-reaching implications.

The team designed a transparent, stretchable susceptor that can be reused without wrinkling and that the sensor will immediately return to its original state after each touch. Scientists hope that this technology can be applied in medicine in the future, such as designing bandages that can adjust tightness, and can even be used to make artificial skin, help patients recover their sense of touch, or design tactile robots. Of course, it will be more useful in traditional touch screens and computers.

The researchers first sprayed a layer of silicon material on the surface of a layer of silicon material, and then repeatedly stretched them. Finally, the carbon nanotubes were oriented in a "spring-like" orientation. This kind of spring can be stretched in any direction. In this process, the magnitude of the force applied to the material can be measured, and repeated stretching for many times will not cause structural damage.

According to reports, this material uses the principle of capacitance and is composed of two parallel conductive plates. When one or both plates are pressed by force, the spacing between the two plates will decrease, thereby increasing the capacitance of the susceptor. This increase can be quantitatively measured. The two parallel conductive plates are coated with silicon carbon nanotubes. Made of, in the middle also added a layer of silicity to store the charge.

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