Layer-by-layer deposition has been widely used to prepare heterogeneous nanocomposites with controllable properties, where the controllability of nanocomposite properties can be further enhanced by combining the self-assembly of hard materials, such as nanocrystals, and soft materials, such as polymer matrices. However, the self-assembled structure of nanocrystals in a polymer matrix is limited by thermodynamics. Herein, we introduced the strong interaction between nanocrystals and a substrate to generate a thermodynamically unfavorable one-dimensional nanostructure standing vertically on the substrate. Two different shapes—“wire-like” and “steeple-like” or “antenna-like”—of one-dimensional nanostructures standing vertically on the substrate can be obtained using cube-like nanocrystals as building blocks and carefully controlling their size in each deposited layer. This low-cost and massively parallel scale synthesis method to generate one-dimensional nanostructures standing vertically on a substrate can be used to replace the expensive and time-consuming “lithography” synthesis method. This synthesis method also provides a simple way to design and fabricate one-dimensional nanostructures with desired properties standing vertically on a substrate by controlling nanocrystal properties in each deposited layer.

中文翻译：

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通过逐层沉积制造垂直于基底上的一维纳米结构


逐层沉积已广泛用于制备性能可控的异质纳米复合材料，其中通过结合纳米晶体等硬材料和聚合物基体等软材料的自组装可以进一步增强纳米复合材料性能的可控性。然而，聚合物基质中纳米晶体的自组装结构受到热力学的限制。在这里，我们引入了纳米晶体和基底之间的强相互作用，以产生热力学不利的一维纳米结构，垂直站立在基底上。使用立方体纳米晶体作为构建块并仔细控制它们的尺寸，可以获得两种不同形状（“线状”和“尖塔状”或“天线状”）垂直立在基底上的一维纳米结构。沉积层。这种低成本且大规模并行规模的合成方法可产生垂直于基板上的一维纳米结构，可用于取代昂贵且耗时的“光刻”合成方法。该合成方法还提供了一种简单的方法，通过控制每个沉积层中的纳米晶体特性，设计和制造具有所需特性的一维纳米结构，该结构垂直位于基底上。