arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.06104cond-mat.mtrl-sci
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利用马氏体相变自组装周期性纳米结构

Self-Assembled Periodic Nanostructures Using Martensitic Phase Transformations

Abhinav Prakash, Tianqi Wang, Ashley Bucsek, Tristan K. Truttmann, Alireza Fali, Michele Cotrufo, Hwanhui Yun, Jong-Woo Kim, Philip J. Ryan, K. Andre Mkhoyan, A… 展开作者

Abhinav Prakash, Tianqi Wang, Ashley Bucsek, Tristan K. Truttmann, Alireza Fali, Michele Cotrufo, Hwanhui Yun, Jong-Woo Kim, Philip J. Ryan, K. Andre Mkhoyan, Andrea Alu, Yohannes Abate, Richard D. James, Bharat Jalan

摘要:

我们描述了一种新的方法,合理的设计和合成的自组装周期性纳米结构使用马氏体相变。我们证明了这种方法在薄膜的钙钛矿SrSnO3与可重构的周期性纳米结构组成的规则间隔的区域形成鲜明对比的介电性能。薄膜可以通过化学掺杂或应变工程设计成具有不同的周期性和相对相分数。可以使用温度和激光波长来调节单个膜内的介电对比度,从而有效地产生可变的光子晶体。我们的研究结果表明,现实的可能性设计大面积自组装周期性结构,使用马氏体相变的潜力,实现“内置到命令”的纳米结构定制的光电功能。

英文摘要:

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.

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