American researchers have developed a new material that can be transformed into a preset shape when stimulated by light and heat. This controllable deformable material is expected to be widely used in robots, biomedical equipment, artificial muscles and other fields. Research published in the American Journal of Scientific Progress on the 24th showed that the new material uses a liquid crystal elastomer, which can achieve two-way deformation, and this deformation can be observed with the naked eye.
Liquid crystal elastomer is a polymer material, the most common is used in LCD TV monitors. The unique molecular arrangement of the liquid crystal elastomer makes it change after being stimulated by the outside world. However, such changes often require intensive, irreversible programming methods to achieve.
In the new study, the researchers installed a light-sensitive switch in the liquid crystal elastomer. After exposure to light of a specific wavelength, the molecules will first be arranged in a specific manner, and they will deform after exposure to thermal stimulation. For example, a "thousand paper crane" stacked with this material will maintain its original shape at room temperature. When heated to about 93 degrees Celsius, the "thousand paper crane" will stretch and lie flat, and then return to its original state after cooling to room temperature.
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