论文标题
使用Martensitic相变的自组装周期性纳米结构
Self-Assembled Periodic Nanostructures Using Martensitic Phase Transformations
论文作者
论文摘要
我们描述了一种新的方法，用于使用MartenSenitic相变的自组装周期性纳米结构的合理设计和合成。我们在钙钛矿SRSNO3的薄膜中证明了这种方法，其可重新配置的周期性纳米结构由定期间隔较大的介电特性区域组成。这些膜可以设计为通过化学掺杂或应变工程具有不同的周期性和相对相位分数。可以使用温度和激光波长调整单个膜内的介电对比度，从而有效地产生可变的光子晶体。我们的结果表明，使用马塞西氏菌相变设计大区域自组装的周期结构的现实可能性，具有实施针对量身定制的光电功能的“订购式”纳米结构的潜力。
We describe a novel approach for the rational design and synthesis of self-assembled periodic nanostructures using martensitic phase transformations. We demonstrate this approach in a thin film of perovskite SrSnO3 with reconfigurable periodic nanostructures consisting of regularly spaced regions of sharply contrasted dielectric properties. The films can be designed to have different periodicities and relative phase fractions via chemical doping or strain engineering. The dielectric contrast within a single film can be tuned using temperature and laser wavelength, effectively creating a variable photonic crystal. Our results show the realistic possibility of designing large-area self-assembled periodic structures using martensitic phase transformations with the potential of implementing "built-to-order" nanostructures for tailored optoelectronic functionalities.
