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How Gecko Toes Stick

机译:壁虎脚趾如何坚持

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摘要

Geckos can run up a wall or across a ceiling with ease because of their remarkable toes. But gecko toes aren't sticky in the usual way, like duct tape or Post-it notes. Instead, gecko toes bear a hierarchy of structures that act together as a smarter adhesive. The pad of a gecko toe is crossed by ridges covered with hairlike stalks called setae, which branch into hundreds of tiny endings. Gecko toes stick to nearly every material under nearly any conditions (even underwater or in a vacuum), and neither stay dirty nor stick to one another. Geckos can attach and detach their adhesive toes in milliseconds while running on smooth vertical and inverted surfaces, a feat no conventional adhesive can match. And unlike sticky pressure-sensitive adhesives, gecko toes don't degrade, foul or attach accidentally to the wrong spot. My colleagues and I have been studying these remarkable animals for over a decade, and these are some of our latest results.
机译:壁虎的脚趾非常引人注目,因此可以轻松地从墙壁上穿过天花板。但是壁虎脚趾并不像通常的胶带那样粘,例如胶带或便签纸。取而代之的是,壁虎脚趾具有层次结构,它们可以一起充当更智能的粘合剂。壁虎的脚垫被被称为刚毛的毛状茎覆盖的山脊穿过,分支成数百个细小的末端。壁虎脚趾在几乎任何条件下(甚至在水下或真空中)都几乎粘附在所有材料上,既不弄脏也不彼此粘附。壁虎在光滑的垂直和倒置表面上行走时,可以在几毫秒内附着和分离其脚趾趾甲,这是传统胶粘剂无法比拟的。而且,与粘性压敏胶不同,壁虎脚趾不会降解,弄脏或意外附着到错误的位置。我和我的同事们研究这些杰出的动物已有十多年了,这是我们的最新成果。

著录项

  • 来源
    《American Scientist》 |2006年第2期|p.124-132|共9页
  • 作者

    Kellar Autumn;

  • 作者单位

    Department of Biology, Lewis & Clark College, 0615 SW Palatine Hill Road, Portland, OR 97129;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

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