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arXiv 2010.03087cond-mat.softcond-mat.mtrl-sci
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纳米颗粒非欧晶体的阻挫自组装

Frustrated Self-Assembly of Non-Euclidean Crystals of Nanoparticles

Francesco Serafin, Jun Lu, Nicholas Kotov, Kai Sun, Xiaoming Mao

摘要:

自然界中的自组织复杂结构,例如病毒衣壳、分级生物聚合物和细菌鞭毛,提供了效率、适应性、鲁棒性和多功能性。我们能否用简单的积木编程三维(3D)复杂结构的自组装,并在工程材料中达到类似或更高的复杂程度?在这里,我们提出了一个分析理论的四面体纳米粒子(NPs)自组装在3D空间中,不可避免的几何挫折相结合的竞争吸引和排斥粒子间的相互作用导致可控的,高产率,和对映体纯自组装的螺旋带。该理论基于非欧几里德空间中的晶体结构,预测了与实验观察定性一致的形态。我们预计,这一理论将提供一个通用框架,用于将简单的多面体构建块自组装成具有新材料能力的复杂形态,如可调光学活性,这对多种新兴技术至关重要。

英文摘要:

Self-organized complex structures in nature, e.g. viral capsids, hierarchical biopolymers, and bacterial flagella, offer efficiency, adaptability, robustness, and multi-functionality. Can we program the self-assembly of three-dimensional (3D) complex structures with simple building blocks, and reach similar or higher level of sophistication in engineered materials? Here we present an analytic theory of tetrahedral nanoparticles (NPs) self-assembling in 3D space, where unavoidable geometrical frustration combined with competing attractive and repulsive inter-particle interactions lead to controllable, high-yield, and enantiopure self-assembly of helicoidal ribbons. This theory, based on crystal structures in non-Euclidean space, predicts morphologies that exhibit qualitative agreement with experimental observations. We expect that this theory will offer a general framework for the self-assembly of simple polyhedral building blocks into complex morphologies with new material capabilities such as tunable optical activity, essential for multiple emerging technologies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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