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Massive assembly of ZnO nanowire-based integrated devices

机译:大规模组装基于ZnO纳米线的集成设备

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摘要

Although a directed assembly strategy has been utilized for the massive assembly of various nanowires and nanotubes (NWs/NTs), its application has usually been limited to rather small-diameter NWs/NTs prepared in solution. We report two complementary methods for the massive assembly of large-size ZnO nanowires (NWs). In the solution-phase method, ZnO NWs were assembled and aligned selectively onto negatively charged surface patterns in solution. In addition, the substrate bias voltage and capillary forces can be used to further enhance the adsorption rate and degree of alignment of ZnO NWs, respectively. In the direct-transfer method, a NW film grown on a solid substrate was placed in close proximity to a molecule-patterned substrate, and ultrasonic vibration was applied so that the NWs were directly transferred and aligned onto the patterned substrate. The solution-phase and direct-transfer methods are complementary to each other and suitable for the assembly of NWs prepared in solution and on solid substrates, respectively.
机译:尽管定向组装策略已用于各种纳米线和纳米管(NWs / NTs)的大规模组装,但其应用通常仅限于溶液中制备的相当小直径的NWs / NTs。我们报告了两种互补方法,用于大规模组装大型ZnO纳米线(NWs)。在固溶相法中,将ZnO NW组装并选择性地对准溶液中带负电的表面图案。另外,衬底偏置电压和毛细作用力可分别用于进一步提高ZnO NWs的吸附速率和取向度。在直接转印法中,将在固体基板上生长的NW膜紧贴在分子图案化的基板上,并施加超声波振动,从而将NW直接转印并对准到图案化的基板上。固溶相法和直接转移法是相辅相成的,分别适用于在溶液中和在固体基质上制备的净水的组装。

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