Heteroepitaxial modification of nanomaterials has become a powerful means to create novel functionalities for various applications. One of the most elementary factors in heteroepitaxial nanostructures is the misfit strain arising from mismatched lattices of the constituent parts. Misfit strain not only dictates epitaxy kinetics for diversifying nanocrystal morphologies but also provides rational control over materials properties. In recent years, advances in chemical synthesis along with the rapid development of electron microscopy and X‐ray diffraction techniques have enabled a substantial understanding of strain‐related processes, which offers theoretical foundation and experimental guidance for researchers to refine heteroepitaxial nanostructures and their properties. Herein, recent investigations on heterogeneous core–shell nanocrystals containing misfit strains are summarized, with a focus on the mechanistic understanding of strain and strain‐induced effects such as tuning the epitaxial habit, modulating the optical emission, and enhancing the catalytic activity and magnetic coercivity.

中文翻译：

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揭示失配应变在控制核-壳纳米晶体中的作用

纳米材料的异质外延改性已成为为各种应用创造新颖功能的有力手段。异质外延纳米结构中最基本的因素之一是由组成部分的不匹配晶格引起的失配应变。错配应变不仅决定了使纳米晶体形态多样化的外延动力学，而且还提供了对材料特性的合理控制。近年来，化学合成技术的发展以及电子显微镜和X射线衍射技术的迅速发展使人们对应变相关的过程有了实质性的了解，这为研究人员提炼异质外延纳米结构及其性能提供了理论基础和实验指导。在这里