Self-Assembled Periodic Nanostructures Using Martensitic Phase Transformations
Self-Assembled Periodic Nanostructures Using Martensitic Phase Transformations
复制标题
利用马氏体相变自组装周期性纳米结构
DOI：
10.1021/acs.nanolett.0c03708
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发表时间：
2021
期刊：
影响因子：
10.8
通讯作者：
Mkhoyan, K. Andre
中科院分区：
文献类型：
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作者：
Prakash, Abhinav;Wang, Tianqi;Bucsek, Ashley;Truttmann, Tristan K.;Fali, Alireza;Cotrufo, Michele;Yun, Hwanhui;Kim, Jong-Woo;Ryan, Philip J.;Mkhoyan, K. Andre
我们描述了一种利用马氏体相变合理设计和合成自组装周期性纳米结构的新方法。我们在钙钛矿 SrSnO3 薄膜中演示了这种方法，该薄膜具有可重构的周期性纳米结构，该结构由具有鲜明对比介电特性的规则间隔区域组成。通过化学掺杂或应变工程，可以将薄膜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层薄膜内的介电对比度，从而有效地创建可变光子晶体。我们的结果表明，利用马氏体相变设计大面积自组装周期性结构的现实可能性，并具有实现定制光电功能的“按订单构建”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 SrSnO3with 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.