Peristaltic motion of polymer gels
Peristaltic motion of polymer gels
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DOI：
10.1002/anie.200801347
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发表时间：
2008-01-01
影响因子：
16.6
通讯作者：
Hashimoto, Shuji
中科院分区：
文献类型：
--
作者：
Maeda, Shingo;Hara, Yusuke;Hashimoto, Shuji
最近已经开发了许多基于电活性聚合物的物质传输致动器或装置。然而，驱动是由外部输入的开关控制的。相比之下，在生物系统中，有几种自主现象在连续（即非切换）条件下表现出节奏和空间模式。在这里，我们报告了一种类似于活生物体的合成聚合物凝胶的新型自主蠕动运动。此外，凝胶经历循环反应，而不是外部切换，从而反映代谢过程。凝胶内部发生的Belousov-Zhabotinsky （BZ）反应诱导了蠕动运动，该反应起着反应扩散系统的作用。此外，该运动已被用于在水溶液中自主传输物体。这种新材料作为传输物质的设备的组件具有很大的潜力。到目前为止，聚合物和凝胶从基础研究和应用研究的角度都得到了广泛的研究。[1,2]特别是，随着温度、pH值、电场、光等外界变化而膨胀或收缩的材料在各个领域都很有前景。最近，许多研究小组试图将这些智能材料整合到微设备或软执行器中为
Many examples of matter-transporting actuators or devices based on electroactive polymers have recently been developed. However, the actuation is controlled by on–off switching of external inputs. In contrast, there are several autonomous phenomena that exhibit rhythms and spatial patterns under continuous (that is, nonswitched) conditions in biological systems. Herein we report a novel autonomous peristaltic motion of a synthetic polymer gel analogous to that in a living organism. Furthermore, the gel undergoes a cyclic reaction, rather than being externally switched, thereby mirroring the metabolic process. The peristaltic motion is induced by the Belousov–Zhabotinsky (BZ) reaction that takes place inside the gel, which acts as a reaction diffusion system. Furthermore, the motion has been harnessed to autonomously transport an object in aqueous solution. This novel material has great potential as a component in devices that transport matter.Until now, polymers and gels have been widely studied from the points of view of both basic and applied research.[1, 2] In particular, materials that swell or shrink in response to external changes such as temperature, pH value, electric field, and light are promising in various fields. Recently, many research groups have attempted to incorporate these intelligent materials into microdevices or soft actuators.[3] For