论文标题
圆柱列弹性气球的驱动
Actuation of cylindrical nematic elastomer balloons
论文作者
论文摘要
列马弹性体是可编程的软材料，在外部刺激下（例如温度或光的变化）显示出大型，可逆和可预测的变形。尽管该领域的大部分工作都集中在扁平板上的驱动上，但最新的3D打印和其他定向合成方法的进步促使研究了弯曲壳的致动。快速屈曲一直是一个特别感兴趣的话题。在这项工作中，我们提出了理论计算，以激发另一种驱动方式，该模式结合了可编程软材料以及与大变形相关的不稳定性。具体而言，我们分析了压力下图案化的nematic弹性体的圆柱壳的变形，表明它可以随着温度变化而发生巨大的体积变化，并建议将其作为具有极高射血分数的泵的应用。
Nematic elastomers are programmable soft materials that display large, reversible and predictable deformation under an external stimulus such as a change in temperature or light. While much of the work in the field has focused on actuation from flat sheets, recent advances in 3D printing and other methods of directed synthesis have motivated the study of actuation of curved shells. Snap-through buckling has been a topic of particular interest. In this work, we present theoretical calculations to motivate another mode of actuation that combines programmable soft materials as well as instabilities associated with large deformation. Specifically, we analyze the deformation of a cylindrical shell of a patterned nematic elastomer under pressure, show that it can undergo an enormous change of volume with changing temperature and suggest its application as a pump with extremely high ejection fraction.
