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一种用于生物和人工表面的纳米及高纵横比结构的快速、精确且低成本的复制技术。

A fast, precise and low-cost replication technique for nano- and high-aspect-ratio structures of biological and artificial surfaces.

作者信息

Koch Kerstin, Schulte Anna Julia, Fischer Angelika, Gorb Stanislav N, Barthlott Wilhelm

机构信息

Nees Institute for Biodiversity of Plants, Rheinische Friedrich-Wilhelms Universität Bonn, Meckenheimer Allee 170, 53115 Bonn, Germany.

出版信息

Bioinspir Biomim. 2008 Dec;3(4):046002. doi: 10.1088/1748-3182/3/4/046002. Epub 2008 Sep 8.

Abstract

Biological surfaces are multifunctional interfaces between the organisms and their environment. Properties such as the wettability and adhesion of particles are linked to the micro- and nanostructures of their surfaces. In this study, we used plant and artificial surfaces covered with wax crystals to develop a low-cost replication technique with high resolution. The technique is applicable for fragile surface structures, as demonstrated for three-dimensional wax crystals, and is fast to prevent shrinking of the biological material by water loss during the molding process. Thermal evaporation of octacosan-1-ol has been used to create microstructured surfaces with small platelets as templates for molding. Epoxy resin as filling material provided the smallest deviations from the original surface structures and can be used for replication of nanostructures as small as 4.5 nm. Contact angle measurements of leaves and their replicas show that this technique can be used to develop biomimetic surfaces with similar wettability as in the plant surfaces.

摘要

生物表面是生物体与其环境之间的多功能界面。诸如颗粒的润湿性和粘附性等特性与其表面的微观和纳米结构相关。在本研究中,我们使用覆盖有蜡晶体的植物和人工表面开发了一种低成本的高分辨率复制技术。该技术适用于易碎的表面结构,如三维蜡晶体所示,并且速度快,可防止成型过程中生物材料因水分流失而收缩。已使用1-二十八醇的热蒸发来创建以小薄片为成型模板的微结构表面。环氧树脂作为填充材料与原始表面结构的偏差最小,可用于复制小至4.5纳米的纳米结构。叶片及其复制品的接触角测量表明,该技术可用于开发具有与植物表面相似润湿性的仿生表面。

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