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接着前段时间发表的博文《仿生材料》,这里发篇具体的研究论文大家看看。这是Phillip B. Messersmith的大作,很有趣味性,知识性和科学性。
在这篇文章之前,他们有篇Nature,关于将壁虎和贻贝的性质结合的新型反复使用的粘合剂。见
A reversible wet/dry adhesive inspired by mussels and geckos
Haeshin Lee, Bruce P. Lee & Phillip B. Messersmith
Nature 448, 338-341 (19 July 2007)
(转自nanotechweb.org)A new type of adhesive that combines the sticky powers of both geckos and mussels has been created by researchers in the US. The new "geckel glue" works on both wet and dry surfaces, unlike previous gecko-inspired glues that only worked on dry surfaces. The glue can also be reused over a thousand times and so could be used in a variety of medical applications, including water-resistant bandages and band-aids, drug delivery patches and for repairing skin wounds. It could also provide adhesion for underwater vehicles and robots and be used by divers to temporarily adhere to a surface.5rx,
一只壁虎趴在一个贻贝的壳上,这种罕见的情景源自这两个物种向某种东西上粘附的共同本领。壁虎甚至能向翻转的表面上粘附,这是因为它们的脚上有微小的毛。这些刚毛与接触面之间有着巨大的范德华力。但它们的附着力只是暂时的,因为快速附着和脱开是其运动的关键。事实证明,要合成某种可以反复粘附的东西是很困难的,而且还存在另一个问题:壁虎的粘附力在水中会大大减小。P. B. Messersmith他们发明的新的粘合剂克服了对水的这种敏感性,办法是将壁虎一样的纳米结构与贻贝所采用的进行水下粘附的化学方法结合起来。这样所获得的杂合型粘合剂(它由一系列涂有一种聚合物的小柱子组成,这种聚合物类似于贻贝身上的粘性蛋白)在湿态和干态都表现出惊人的可逆粘附性,粘附周期超过1000次。这项进展有可能导致适合于一系列实际应用的可逆粘合剂的问世。
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