Shape morphing on target under temperature

Thermal shape morphing using bi-material kirigami

Morphing structure created by using two materials with different coefficient of thermal expansions










Shape morphing in response to an environmental stimulus, such as temperature, light, and chemical cues, is currently pursued in synthetic analogs for manifold applications in engineering, architecture, and beyond. By using two materials with different coefficient of thermal expansions, they can be arranged into an architected unit structure to shape-morph on target in response to a temperature stimulus. Thus, these bi-material units can be combined to collectively deploy into a geometrically rich set of periodic and aperiodic shapes that can shape-match a predefined target. This allows for reversible morphing due to mechanics and geometry instead of the current strategies on material chemistry and fabrication.

Relevant publications 

Taniker S, Celli P, Pasini D, Hofmann D, Daraio C, Temperature-induced shape morphing of bi-metallic structuresInternational Journal of Solids and Structures, Vol. 190, pp. 22-32, 2020.

Liu L, Qiao C, An H, Pasini D, Encoding kirigami bi-materials to morph on target in response to temperatureScientific Reports, 9, 19499, 2019.