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Material versatility using replica molding for large-scale fabrication of high aspect-ratio, high density arrays of nano-pillars

机译:使用仿制品模塑的材料多功能性,可大规模制造高纵横比,高密度的纳米柱阵列

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摘要

Arrays of high aspect-ratio (AR) nano-pillars have attracted a lot of interest for various applications, such as for use in solar cells, surface acoustic sensors, tissue engineering, bio- inspired adhesives and anti-re ? ective surfaces. Each application may require a different structural material, which can vary in the required chemical composition and mechanical properties. In this paper, a low cost fabrication procedure is proposed for large scale, high AR and high density arrays of nano-pillars. The proposed method enables the replication of a master with high ? delity, using the subsequent replica molds multiple times, and preparing arrays of nano-pillars in a variety of different materials. As an example applied to bio-inspired dry adhesion, polymeric arrays of nano-pillars are prepared in this work. Thermoset and thermoplastic nano-pillar arrays are examined using an atomic force microscope to assess their adhesion strength and its uniformity. Results indicate the proposed method is robust and can be used to reliably prepare nano-structures with a high AR.
机译:高长宽比(AR)纳米柱阵列已吸引了许多应用的兴趣,例如用于太阳能电池,表面声波传感器,组织工程,受生物启发的胶粘剂和防再腐蚀剂。有效表面。每种应用可能需要不同的结构材料,这些材料可能会在所需的化学组成和机械性能方面有所不同。在本文中,提出了一种低成本的制造程序,用于大规模,高增透率和高密度的纳米柱阵列。所提出的方法可以复制具有高?精巧,多次使用后续的复制模具,并准备各种不同材料的纳米柱阵列。作为应用于生物启发的干粘合的一个例子,在这项工作中准备了纳米柱的聚合物阵列。使用原子力显微镜检查热固性和热塑性纳米柱阵列,以评估其粘合强度及其均匀性。结果表明,所提出的方法是鲁棒的,可用于可靠地制备具有高AR的纳米结构。

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