Bioinspired reversible adhesives that have been developed in the course of recent years have found several applications in robotics, transportation, and marine applications. One of their prominent features is strong reversible static adhesion. To fulfill the requirements of various applications, the static adhesive performance of these materials can be enhanced by modifying the material and surface properties. In this work, the mushroom-shaped adhesive microstructured surface was functionalized by atmospheric plasma treatment to enhance its adhesive performances. Through optimizing the duration of the treatment, the pull-off force increase of up to 60% can be reached after the treatment in comparison to the measurements performed on the same mushroom-shaped microstructured sample before the treatment. In comparison to the microstructured samples, the attachment of the unstructured sample made of the same silicone elastomer was enhanced by 16% after plasma treatment. The strong adhesion enhancement on the microstructured sample was attributed to the combination of the changed effective elastic modulus of the material and the specific detachment behavior of microstructures. These results are anticipated to contribute to the further development of bioinspired dry adhesives and may potentially widen their usage in various technological applications.

中文翻译：

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大气等离子体处理增强蘑菇状微结构弹性体的粘合性能

近年来开发的仿生可逆粘合剂已在机器人、运输和海洋应用中找到了多种应用。它们的突出特点之一是强大的可逆静态附着力。为了满足各种应用的要求，可以通过改变材料和表面特性来增强这些材料的静态粘合性能。在这项工作中，蘑菇状粘合剂微结构化表面通过大气等离子体处理进行了功能化，以提高其粘合性能。通过优化处理时间，与处理前对相同蘑菇状微结构样品进行的测量相比，处理后的拉拔力可增加高达 60%。与微结构样品相比，等离子处理后，由相同有机硅弹性体制成的非结构化样品的附着力提高了 16%。微结构样品的强附着力增强归因于材料有效弹性模量的变化和微结构的特定分离行为的结合。预计这些结果将有助于进一步开发仿生干粘合剂，并可能扩大其在各种技术应用中的用途。