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Scalable alignment and transfer of nanowires based on oriented polymer nanofibers

机译：基于定向聚合物纳米纤维的纳米线的可扩展对准和转移

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摘要

We develop a simple and scalable method based on oriented polymer nanofiber films for the parallel assembly and transfer of nanowires at high density. Nanowires dispersed in solution are aligned and selectively deposited at the central space of parallel nanochannels formed by the well-oriented nanofibers as a result of evaporation-induced flow and capillarity. A general contact printing method is used to realize the transfer of the nanowires from the donor nanofiber film to a receiver substrate. The mechanism, which involves ordered alignment of nanowires on oriented polymer nanofiber films, is also explored with an evaporation model of cylindrical droplets. The simplicity of the assembly and transfer, and the facile fabrication of large-area well-oriented nanofiber films, make the present method promising for the application of nanowires, especially for the disordered nanowires synthesized by solution chemistry.
机译：我们开发了一种基于定向聚合物纳米纤维薄膜的简单且可扩展的方法，用于以高密度并行组装和转移纳米线。由于蒸发引起的流动和毛细作用，分散在溶液中的纳米线排列并选择性地沉积在由取向良好的纳米纤维形成的平行纳米通道的中心空间。使用常规的接触印刷方法来实现纳米线从供体纳米纤维膜到接收体基底的转移。该机理还涉及圆柱状液滴的蒸发模型，涉及在取向的聚合物纳米纤维薄膜上纳米线的有序排列。组装和转移的简单性以及大面积良好取向的纳米纤维膜的容易制造，使得本发明方法有望用于纳米线的应用，特别是对于通过溶液化学合成的无序纳米线的应用。

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