Engineering of Micro- and Nanostructured Surfaces with Anisotropic Geometries and Properties
Engineering of Micro- and Nanostructured Surfaces with Anisotropic Geometries and Properties
复制标题
DOI：
10.1002/adma.201103796
复制
发表时间：
2012-04-03
影响因子：
29.4
通讯作者：
Hart, A. John
中科院分区：
文献类型：
--
作者：
Tawfick, Sameh;De Volder, Michael;Hart, A. John
通过结合物理和化学效应来增强界面性能的机会刺激了制造具有坚固的微米和纳米结构形貌的表面的广泛方法。特别是，不对称表面特征的阵列，例如凹槽、倾斜柱和螺旋突起的阵列，已被证明赋予独特的各向异性特性，包括润湿、粘附、导热性和/或导电性、光学活性和引导细胞生长的能力。这些特性引起了能源转换、微电子、化学和生物传感以及生物工程等应用的广泛关注。然而，不对称表面特征的制造通常会突破传统蚀刻和沉积技术的限制，使得以可扩展且经济高效的方式生产所需表面具有挑战性。我们回顾并分类了在聚合物、金属和陶瓷中制造不对称 2D 和 3D 表面特征阵列的方法。讨论了几何形状、材料和表面特性之间的分析和经验关系，特别是在上述应用的背景下。此外，还确定了将光刻与自组装原理相结合的新制造方法的机会，旨在建立大面积任意 3D 表面纹理制造的设计原则。
Widespread approaches to fabricate surfaces with robust micro- and nanostructured topographies have been stimulated by opportunities to enhance interface performance by combining physical and chemical effects. In particular, arrays of asymmetric surface features, such as arrays of grooves, inclined pillars, and helical protrusions, have been shown to impart unique anisotropy in properties including wetting, adhesion, thermal and/or electrical conductivity, optical activity, and capability to direct cell growth. These properties are of wide interest for applications including energy conversion, microelectronics, chemical and biological sensing, and bioengineering. However, fabrication of asymmetric surface features often pushes the limits of traditional etching and deposition techniques, making it challenging to produce the desired surfaces in a scalable and cost-effective manner. We review and classify approaches to fabricate arrays of asymmetric 2D and 3D surface features, in polymers, metals, and ceramics. Analytical and empirical relationships among geometries, materials, and surface properties are discussed, especially in the context of the applications mentioned above. Further, opportunities for new fabrication methods that combine lithography with principles of self-assembly are identified, aiming to establish design principles for fabrication of arbitrary 3D surface textures over large areas.