在弹性体片材中图案化非等距折纸
Patterning nonisometric origami in nematic elastomer sheets
摘要：
向列型弹性体响应于包括光和热在内的各种刺激而显著改变其形状。在本文中，我们提供了一个系统的框架设计的复杂的三维形状，通过驱动的异质图案的弹性体片。这些片材由\textit{nonisometric origami}构建块组成，当适当地连接在一起时，这些构建块可以致动成各种各样的三维刻面形状。我们从理论上和实验上证明：1）非等距折纸构建块以预测的方式致动，2）多个构建块的集成导致复杂的多稳定，但可预测的形状，3）我们可以通过实验来偏置致动，以获得多稳定形状中所需的复杂形状。然后，我们表明，这种实验实现的功能，使一个丰富的可能的设计景观驱动使用弹性体。我们强调这一景观通过理论的例子，利用这些积木的大阵列，以实现所需的三维折纸形状。结合起来，这些结果相当于一个工程设计原则，我们希望这将提供一个模板的应用弹性体的新兴技术。
英文摘要：
Nematic elastomers dramatically change their shape in response to diverse stimuli including light and heat. In this paper, we provide a systematic framework for the design of complex three dimensional shapes through the actuation of heterogeneously patterned nematic elastomer sheets. These sheets are composed of \textit{nonisometric origami} building blocks which, when appropriately linked together, can actuate into a diverse array of three dimensional faceted shapes. We demonstrate both theoretically and experimentally that: 1) the nonisometric origami building blocks actuate in the predicted manner, 2) the integration of multiple building blocks leads to complex multi-stable, yet predictable, shapes, 3) we can bias the actuation experimentally to obtain a desired complex shape amongst the multi-stable shapes. We then show that this experimentally realized functionality enables a rich possible design landscape for actuation using nematic elastomers. We highlight this landscape through theoretical examples, which utilize large arrays of these building blocks to realize a desired three dimensional origami shape. In combination, these results amount to an engineering design principle, which we hope will provide a template for the application of nematic elastomers to emerging technologies.
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