Depletion-induced crystallization of anisotropic triblock colloids

被引:1
|
作者
Camerin, Fabrizio [1 ,2 ]
Marin-Aguilar, Susana [1 ]
Dijkstra, Marjolein [1 ,2 ]
机构
[1] Univ Utrecht, Debye Inst Nanomat Sci, Soft Condensed Matter & Biophys, Princetonpl 1, NL-3584 CC Utrecht, Netherlands
[2] Hiroshima Univ, Int Inst Sustainabil Knotted Chiral MetaMatter WPI, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 7398526, Japan
基金
欧洲研究理事会; 欧盟地平线“2020”;
关键词
PARTICLES; DESIGN; LOCK;
D O I
10.1039/d3nr04816k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The intricate interplay between colloidal particle shape and precisely engineered interaction potentials has paved the way for the discovery of unprecedented crystal structures in both two and three dimensions. Here, we make use of anisotropic triblock colloidal particles composed of two distinct materials. The resulting surface charge heterogeneity can be exploited to generate regioselective depletion interactions and directional bonding. Using extensive molecular dynamics simulations and a dimensionality reduction analysis approach, we map out state diagrams for the self-assembly of such colloids as a function of their aspect ratio and for varying depletant features in a quasi two-dimensional set-up. We observe the formation of a wide variety of crystal structures such as a herringbone, brick-wall, tilted brick-wall, and (tilted) ladder-like structures. More specifically, we determine the optimal parameters to enhance crystallization, and investigate the nucleation process. Additionally, we explore the potential of using crystalline monolayers as templates for deposition, thereby creating complex three-dimensional structures that hold promise for future applications. The combination of colloidal particle shape with the use of different materials leads to the discovery of unprecedented crystal structures in two and three dimensions.
引用
收藏
页码:4724 / 4736
页数:13
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