Phys.org February 2, 2024 A team of researchers in the US (University of Chicago, S DEVCOM Army Research Laboratory, NIST, NASA Glenn Research Center, Northwestern University) applied concept of pluripotency to adjust the microstructure of a range of materials, including many metals. They achieved through the inclusion of thia-Michael bonds that are relatively weak and capable of reshuffling at lower temperatures compared with the covalent bonds in the polymer. At higher tempering temperatures, the cross-link density of the thia-Michael network decreased, resulting in a lower stiffness of the material, whereas tempering at lower temperatures created a stiffer material. The material […]
Tag Archives: Shape memory
New programmable smart fabric responds to temperature and electricity
Phys.org April 24, 2023 To study multi-stimuli-responsive materials with distinctive abilities to change color and color-changing and shape-memory, an international team of researchers (China, Canada) wove an electrothermally multi-responsive fabric using metallic composite yarns and polymeric/thermochromic microcapsule composite fibers. The shape-memory and color-changing features of the fabric could be controlled by rationally controlling the micro-scale design of the individual fibers in the structure. The microstructural features were optimized to achieve excellent color-changing behavior along with shape fixity and recovery ratios of 99.95% and 79.2%, respectively. The fabric’s dual response by electric field could be achieved by a low voltage of […]