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首页> 外文期刊>Bioinspiration & biomimetics >Bioinspired monolithic polymer microsphere arrays as generically anti-adhesive surfaces
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Bioinspired monolithic polymer microsphere arrays as generically anti-adhesive surfaces

机译：受生物启发的整体式聚合物微球阵列作为一般的防粘表面

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Bioinspired surface topographies showing generic anti-adhesive behaviour by minimization of the real contact area not only with rigid, but also with soft and compliant counterpart surfaces recently attracted increasing attention. In the present study, we show that such generic anti-adhesive surfaces, which moreover demonstrate anti-fouling behaviour, can be produced on a large scale by a simple double replication of monolayers of microspheres with diameters of a few 10 mu m. Thus, we obtained mechanically stable monolithic arrays of microspheres tightly connected to a support of the same material. Adhesion of these microsphere arrays to sticky and compliant counterpart surfaces was one order of magnitude weaker than that of flat control samples of the same material. The generation of nanorod arrays with nanorod diameters of a few 100 nmas the second hierarchical structure level on monolithic microsphere arrays did not significantly affect the adhesion force. The experimental data on anti-adhesive behaviour were modelled using a modified Johnson-Kendall-Roberts theoretical approach that also provided general design criteria for topographic adhesion minimization to sticky counterpart surfaces.
机译：生物启发的表面形貌通过最小化实际接触面积不仅具有刚性，而且具有柔软而顺应的对应表面，从而显示出通用的抗粘连性能，最近引起了越来越多的关注。在本研究中，我们表明，通过显示直径为10微米的微球单层的简单双层复制，可以大规模生产这种具有防污性能的通用防粘表面。因此，我们获得了机械稳定的微球整体阵列，该阵列紧密连接到相同材料的支撑体上。这些微球阵列对粘性和顺应性对应表面的粘附力比相同材料的平面对照样品的粘附力弱一个数量级。作为整体微球阵列上第二级结构水平的纳米棒直径为几百纳米的纳米棒阵列的产生并没有显着影响粘附力。使用改进的Johnson-Kendall-Roberts理论方法对抗粘连行为的实验数据进行了建模，该方法还提供了使对粘附对应表面的形貌粘连最小化的一般设计标准。

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