Nondestructive replication of self-ordered nanoporous alumina membranes via cross-linked polyacrylate nanofiber arrays
Nondestructive replication of self-ordered nanoporous alumina membranes via cross-linked polyacrylate nanofiber arrays
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DOI：
10.1021/nl080842c
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发表时间：
2008-07-01
期刊：
影响因子：
10.8
通讯作者：
Steinhart, Martin
中科院分区：
文献类型：
--
作者：
Grimm, Silko;Giesa, Reiner;Steinhart, Martin
有序纳米阵列是一种很有前途的材料平台，用于人工粘附结构、组织工程、伤口敷料、传感器阵列和自清洁表面。它们的生产通过自有序的多孔氧化铝硬模板作为形状定义模具是公认的。然而，它们的释放需要通过用酸或碱的湿化学蚀刻步骤来破坏硬模板，硬模板的制造是昂贵且耗时的。我们报告了交联聚丙烯酸酯纳米纤维阵列的无损机械提取;从可回收的自有序纳米多孔氧化铝硬模板中提取。后者的二氧化硅复制品合成使用的extracated阵列作为二次模具，可以从模制材料的机械分离。这里报道的方法，它可以与微结构相结合，可以铺平道路的高通量生产的功能性的纳米阵列和有序的纳米多孔膜组成的广泛的材料系统。
Ordered nanofiber arrays are a promising material platform for artificial adhesive structures, tissue engineering, wound dressing, sensor arrays, and self-cleaning surfaces. Their production via self-ordered porous alumina hard templates serving as shape-defining molds is well-established. However, their release requires the destruction of the hard templates, the fabrication of which is costly and time-consuming, by wet-chemical etching steps with acids or bases. We report the nondestructive mechanical extraction of arrays of cross-linked polyacrylate nanofibers; from thus recyclable self-ordered nanoporous alumina hard templates. Silica replicas of the latter were synthesized using the extricated nanofiber arrays as secondary molds that could be mechanically detached from the molded material. The approach reported here, which can be combined with microstructuring, may pave the way for the high-throughput production of both functional nanofiber arrays and ordered nanoporous membranes consisting of a broad range of material systems.