Creasing of Multilayer Polymer Films

Hayward, Ryan, Chen, Dayong and Xu, Ben (2014) Creasing of Multilayer Polymer Films. In: MRS Spring 2014, 21-25 April 2014, San Francisco, CA, USA.

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A soft elastic material placed under compressive stress can undergo a surface creasing instability in which the free interface becomes directly unstable to the formation of sharp self-contacting features. The resulting changes in contact between neighboring surface regions, and the non-affine in-plane displacement of material elements, provide unique opportunities for designing shape-programmable materials. This presentation will highlight several recent advances related to the formation of creases on the surfaces of multilayer polymer films. In one example, we study the influence of pre-compression of the substrate in a soft elastic bilayer as a means to tune hysteresis between crease onset and disappearance, yielding well-defined bistability. In another example, we consider the behavior of patterned stiff films on soft substrates, wherein the interplay between wrinkling and creasing modes offers promise for the design of new types of electronic switches with potential applications in flexible electronics.

Item Type: Conference or Workshop Item (Speech)
Subjects: F100 Chemistry
F200 Materials Science
F300 Physics
H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
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Depositing User: Bin Xu
Date Deposited: 14 Oct 2014 14:48
Last Modified: 13 Oct 2019 00:37

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