Chemically controlled shape-morphing of elastic sheets
Chemically controlled shape-morphing of elastic sheets
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DOI：
10.1039/d0mh00730g
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发表时间：
2020-09-01
影响因子：
13.3
通讯作者：
Balazs, Anna C.
中科院分区：
文献类型：
--
作者：
Manna, Raj Kumar;Shklyaev, Oleg E.;Balazs, Anna C.
二维响应材料可以改变形状，变成复杂的三维结构，对于创建从可穿戴电子产品到软机器人等各种系统都很有价值。通常，最终的3D结构是独特的，并通过材料的加工预先确定。在这里，我们运用理论和模拟设计了一种独特的方法来驱动流体填充微室中二维弹性片的形状变化。这些薄片被涂上一层催化剂，以产生可控的流体流动，从而将薄片转变成复杂的3D形状。给定的形状可以通过在薄片上对催化域的排列进行图案化并引入适当的反应物来引发特定的催化反应来实现。此外，包含多个催化域的单片可以通过添加一种或多种反应物转化为各种3D形状。按需变形成各种不同结构的材料系统可以简化制造过程并扩大软材料的用途。
Two-dimensional responsive materials that change shape into complex three-dimensional structures are valuable for creating systems ranging from wearable electronics to soft robotics. Typically, the final 3D structure is unique and predetermined through the materials' processing. Here, we use theory and simulation to devise a distinctive approach for driving shape changes of 2D elastic sheets in fluid-filled microchambers. The sheets are coated with catalyst to generate controllable fluid flows, which transform the sheets into complex 3D shapes. A given shape can be achieved by patterning the arrangement of the catalytic domains on the sheet and introducing the appropriate reactant to initiate a specific catalytic reaction. Moreover, a single sheet that encompasses multiple catalytic domains can be transformed into a variety of 3D shapes through the addition of one or more reactants. Materials systems that morph on-demand into a variety of distinct structures can simplify manufacturing processes and broaden the utility of soft materials.