Recently, researchers at Washington State University have successfully developed a liquid crystal smart material. This new material can change its shape according to temperature and ultraviolet light, such as folding or unfolding to a previously set shape. Smart materials have always been areas of concern for researchers around the world. Scientists have also developed materials that can change shape and new materials that can heal itself. However, these materials generally have only one kind of function and are extremely difficult to be mass-produced, so they are subject to certain restrictions in the application field. This time, the liquid crystal smart material is the world's first material combining memory, photosensitivity and self-healing. This liquid crystal material consists of liquid crystal networks (LCNs) and chemical materials (azobenzene-containing epoxy resins and aliphatic dicarboxylic acids). The liquid crystal network has the memory and sensitivity to the shape, and when combined with chemical materials, the material can easily change various shapes under the irradiation of ultraviolet rays or changes in temperature. At the same time, the material can also be self-repaired by ultraviolet rays after being scratched by a blade. From the demonstration video provided by the researchers, it can be seen that this new material of liquid crystals is bent into cubes in blue light and is automatically expanded under the irradiation of ultraviolet rays. After the material is cut with a blade, it can be restored to its original shape when heated to 85 degrees, heated again to 140 degrees, and restored to the previous cube. Crystalline Liquid is widely used in electronic video recording, nuclear magnetic resonance research, etc., and domestic LCD TVs are mainly composed of this. The epoxy resin is widely used in electrical and electronic packaging and insulation, coatings, composite materials and other fields, but also important LED packaging materials. Overseas experts believe that the future applications of such smart materials are very extensive. After the liquid crystal material is added to the solar panels of the space satellite, the satellites can deploy or fold solar panels without any battery drive in orbit. With the addition of such materials to smart furniture, smart furniture can be assembled automatically without any tools or machines. At the same time, researchers from Washington State University also said that in the future, they will consider testing this type of material for automotive shells, and whether or not the vehicle can achieve self-recovery after a severe impact. (Reporter Shi Tingqi)
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