writer：4. Wei Min Huang,* Hai Bao Lu, Yong Zhao, Zhen Ding, Chang Chun Wang, Ji Liang Zhang, Li Sun, Jun Fu
keywords：shape memory
source：期刊
specific source：Materials and Design 2014, 59, 176-192.
Issue time：2014年

With the current development in 3-D printing and origami-inspired technologies, stimulus-induced shape/surface morphology switching becomes a novel approach to produce complex 2-D/3-D mechanisms/structures. This paper briefly discusses major instability/collapse phenomena in the shape change/memory effect based such switching in polymeric materials and their structures, from the beginning of fabrication and programming to the final step of shape/surface morphology switching. As shown here, stimulus-induced shape/surface morphology switching is essentially a mixture of mechanism and structure, so that on the one hand it shares many common features as in conventional mechanisms and structures, while on the other hand it has some unique characteristics; instability may happen during programming as well, and instability may be utilized as a powerful self-assembly technique for surface morphology switching. In most cases, traditional theories of mechanics may be applied directly in analysis/design to either avoid instability/collapse or purposely induce these phenomena for our intended purpose.

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