Fibre science - Supercontraction stress in wet spider dragline
Fibre science - Supercontraction stress in wet spider dragline
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DOI：
10.1038/416037a
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发表时间：
2002-03-07
期刊：
影响因子：
64.8
通讯作者：
Viney, C
中科院分区：
文献类型：
--
作者：
Bell, FI;McEwen, IJ;Viney, C
不受约束的蜘蛛拖丝在被弄湿时会“超级收缩”，导致其长度缩短约一半，直径几乎增加一倍。在这里，我们测量蜘蛛拖丝初始暴露于水分后产生的超收缩应力，并发现它们是短暂的，以及大于先前估计的。我们的研究结果对超收缩可能有助于保持湿网的张力并可能限制丝及其类似物的潜在承重应用的建议表示怀疑。
Unrestrained spider dragline 'super-contracts' when it is wetted, causing its length to shrink by about half and its diameter to almost double,. Here we measure the supercontraction stresses generated upon initial exposure of spider dragline to moisture and find that they are transient, as well as being greater than previously estimated. Our findings cast doubt on suggestions that supercontraction may help to maintain tension in wet webs and could limit the potential load-bearing applications of silk and its analogues.