Shape-shifter forms box in water

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Shape-shifter forms box in water

机译：变形器在水中形成盒子

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Just add warm water, and a specially designed polymer composite can fold into a box or even a flower - on its own. The material, a hydrogel embedded with carbon nanotubes, was conceived by Ali Javey at the University of California, Berkeley, and his collaborators. At room temperature, the composite is hydrophilic and water is incorporated in its structure. But above a threshold temperature of around 33 °C, it becomes hydrophobic and extrudes water. This reversible transition causes a mechanical strain that can be exploited to create shape-changing actuators. The carbon nanotubes ensure a fast response time.

机译：只需添加温水，即可将经过特殊设计的聚合物复合材料折叠成盒子甚至是花朵。这种材料是一种嵌有碳纳米管的水凝胶，由加州大学伯克利分校的阿里·贾维和他的合作者构思而成。在室温下，该复合材料是亲水性的，并且在其结构中掺入了水。但高于约33°C的阈值温度时，它会变得疏水并挤出水。这种可逆的过渡会引起机械应变，可以利用该机械应变来创建形状可变的执行器。碳纳米管可确保快速响应时间。

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《Nature》 |2011年第7357期|p.426|共1页
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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Shape-shifter forms box in water

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