Capillary adhesion of wetted cribellate spider capture silks for larger pearly hanging-drops
Capillary adhesion of wetted cribellate spider capture silks for larger pearly hanging-drops
复制标题
润湿的丝网蜘蛛捕获丝的毛细管粘附力以获得较大的珍珠状悬滴
DOI：
10.1039/c1sm05646h
复制
发表时间：
2011-01-01
期刊：
影响因子：
3.4
通讯作者：
Jiang, Lei
中科院分区：
文献类型：
--
作者：
Huang, Zhongbing;Chen, Yuan;Jiang, Lei
近年来，纤维上较大的悬滴在取水工程或过滤工程中具有重要意义。加湿后的蜘蛛捕捉丝挂出令人惊叹的大珍珠水滴，并显示出强大的捕水能力。如果表面没有特殊的湿粘附力，这种能力是不存在的。在这里，我们研究了在挂起更大的珍珠水滴过程中，湿润的筛形蜘蛛捕捉丝上的毛细血管粘附性。基于润湿蜘蛛丝上纺锤结的粗糙度和曲率，提出了一种新的毛细附着力模型来评估较大的珍珠状悬滴。所设计的人造纤维具有很强的吸水能力。本研究对蜘蛛丝的湿粘性能进行了深入的研究，有助于设计人造聚合物纤维，将其应用于集水帐篷和集水网，并推广到有害的气溶胶排放和化工厂粉尘污染等过滤工程中。
Larger hanging-drops on a fiber have been significant for water-acquiring engineering or filtering projects in recent years. Cribellate spider capture silks after wetting hang amazingly large pearly water drops and display strong water capture ability. This ability wouldn't exist without a special wet adhesion on a surface. Here, we investigate the capillary adhesion on wetted cribellate spider's capture silk during the hanging of larger pearly water drops. Based on the roughness and curvature of a spindle-knot on wetted spider silk, the novel models of capillary adhesion force are proposed to value the larger pearly hanging-drops. The strong water-capturing ability can be demonstrated by as-designed artificial fibers. This investigation opens an insight into the wet adhesive property of spider silk, which is helpful to design artificial polymer fibers that will be applied into water collecting tents and webs, and extended into filtering projects such as the noxious emission of aerosol and dust pollution from chemical plants.