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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Reconfigurable assemblies of active, autochemotactic gels
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Reconfigurable assemblies of active, autochemotactic gels

机译：活性，趋化趋化性凝胶的可重组组件

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摘要

Using computational modeling, we show that self-oscillating Belou-sov-Zhabotinsky (BZ) gels can both emit and sense a chemical signal and thus drive neighboring gel pieces to spontaneously self-aggregate, so that the system exhibits autochemotaxis. To the best of our knowledge, this is the closest system to the ultimate self-recombining material, which can be divided into separated parts and the parts move autonomously to assemble into a structure resembling the original, uncut sample. We also show that the gels' coordinated motion can be controlled by light allowing us to achieve selective self-aggregation and control over the shape of the gel aggregates. By exposing the BZ gels to specific patterns of light and dark, we design a BZ gel "train" that leads the movement of its "cargo." Our findings pave the way for creating reconfigurable materials from self-propelled elements, which autonomously communicate with neighboring units and thereby actively participate in constructing the final structure.%Department of Chemical Engineering, Indian Institute of Technology, Gandhinagar 382424, India;Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA 15261;Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA 15261;
机译：使用计算模型，我们显示自振荡的Belou-sov-Zhabotinsky（BZ）凝胶既可以发出并感应化学信号，从而驱动相邻的凝胶块自发自聚集，从而使系统表现出自趋化作用。据我们所知，这是最接近最终自重组材料的系统，该系统可分为多个独立部分，这些部分自动移动以组装成与原始未切割样品类似的结构。我们还表明，可以通过光控制凝胶的协调运动，从而使我们能够实现选择性的自聚集并控制凝胶聚集体的形状。通过将BZ凝胶暴露在特定的明暗模式下，我们设计了BZ凝胶“序列”来引导其“货物”的运动。我们的发现为自推进元素创建可重构材料铺平了道路，这些元素可与相邻单元自动进行通信，从而积极参与最终结构的构建。％，印度技术学院化学工程系，印度甘地纳加尔38​​2424；化学系宾夕法尼亚州匹兹堡，匹兹堡大学工程系，宾夕法尼亚州15261；宾夕法尼亚州匹兹堡，匹兹堡大学化学工程系，宾夕法尼亚州15261；

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