Fabrication of magnetic colloidal bicones and their switchable self-assembly

Soft Matter ◽  
2020 ◽  
Vol 16 (34) ◽  
pp. 8024-8032
Author(s):  
Shanshan Li ◽  
Linna Wang ◽  
Bing Liu
Keyword(s):  
Self Assembly ◽  
Colloidal Particles

A simple yet effective method was developed to fabricate bicone-shaped colloidal particles and their magnetically switchable self-assembly was investigated.

scholarly journals Self-Assembly of Shape-Tunable Oblate Colloidal Particles into Orientationally Ordered Crystals, Glassy Crystals and Plastic Crystals

Soft Matter ◽  
2021 ◽  
Author(s):  
Jiawei Lu ◽  
Xiangyu Bu ◽  
Xinghua Zhang ◽  
Bing Liu
Keyword(s):  
Crystal Structures ◽  
Self Assembly ◽  
Colloidal Particles ◽  
Building Blocks ◽  
Fundamental Question ◽  
The Self ◽  
Plastic Crystals ◽  
Self Assembled ◽  
Glassy Crystals ◽  
The Relationship

The shapes of colloidal particles are crucial to the self-assembled superstructures. Understanding the relationship between the shapes of building blocks and the resulting crystal structures is an important fundamental question....

Size-Dependent Separation of Colloidal Particles In Two-Dimensional Convective Self-Assembly

Langmuir ◽  
1995 ◽  
Vol 11 (8) ◽  
pp. 2975-2978 ◽  
Author(s):  
Mariko Yamaki ◽  
Junichi Higo ◽  
Kuniaki Nagayama
Keyword(s):  
Self Assembly ◽  
Colloidal Particles ◽  
Two Dimensional ◽  
Size Dependent

scholarly journals Aggregation kinetics of irreversible patches coupled with reversible isotropic interaction leading to chains, bundles and globules

2018 ◽  
Vol 90 (6) ◽  
pp. 1085-1098 ◽  
Author(s):  
Isha Malhotra ◽  
Sujin B. Babu
Keyword(s):  
Self Assembly ◽  
Patch Size ◽  
Colloidal Particles ◽  
Volume Fraction ◽  
Interaction Strength ◽  
Colloidal System ◽  
Angle Distribution ◽  
Volume Fractions ◽  
Low Volume ◽  
A Chain

Abstract In the present study we are performing simulation of simple model of two patch colloidal particles undergoing irreversible diffusion limited cluster aggregation using patchy Brownian cluster dynamics. In addition to the irreversible aggregation of patches, the spheres are coupled with isotropic reversible aggregation through the Kern–Frenkel potential. Due to the presence of anisotropic and isotropic potential we have also defined three different kinds of clusters formed due to anisotropic potential and isotropic potential only as well as both the potentials together. We have investigated the effect of patch size on self-assembly under different solvent qualities for various volume fractions. We will show that at low volume fractions during aggregation process, we end up in a chain conformation for smaller patch size while in a globular conformation for bigger patch size. We also observed a chain to bundle transformation depending on the attractive interaction strength between the chains or in other words depending on the quality of the solvent. We will also show that bundling process is very similar to nucleation and growth phenomena observed in colloidal system with short range attraction. We have also studied the bond angle distribution for this system, where for small patches only two angles are more probable indicating chain formation, while for bundling at very low volume fraction a tail is developed in the distribution. While for the case of higher patch angle this distribution is broad compared to the case of low patch angles showing we have a more globular conformation. We are also proposing a model for the formation of bundles which are similar to amyloid fibers using two patch colloidal particles.

scholarly journals Feedback control for defect-free alignment of colloidal particles

Lab on a Chip ◽  
2018 ◽  
Vol 18 (14) ◽  
pp. 2099-2110 ◽  
Author(s):  
Yu Gao ◽  
Richard Lakerveld
Keyword(s):  
Feedback Control ◽  
Microfluidic Device ◽  
Self Assembly ◽  
Colloidal Particles ◽  
Control Method ◽  
Feedback Control Method

A novel feedback control method to align colloidal particles reliably via directed self-assembly in a microfluidic device is presented.

Laser-accelerated self-assembly of colloidal particles at the water–air interface

2017 ◽  
Vol 15 (5) ◽  
pp. 051401-51405 ◽  
Author(s):  
Mincheng Zhong Mincheng Zhong ◽  
Ziqiang Wang Ziqiang Wang ◽  
and Yinmei Li and Yinmei Li
Keyword(s):  
Self Assembly ◽  
Colloidal Particles ◽  
Air Interface

scholarly journals Size-dependent thermodynamic structural selection in colloidal crystallization

2019 ◽  
Vol 5 (9) ◽  
pp. eaaw5912 ◽  
Author(s):  
Evan Pretti ◽  
Hasan Zerze ◽  
Minseok Song ◽  
Yajun Ding ◽  
Runfang Mao ◽  
...  
Keyword(s):  
Self Assembly ◽  
Colloidal Particles ◽  
Size Dependence ◽  
Fluid Phase ◽  
Two Dimensions ◽  
Size Dependent ◽  
Colloidal Crystallization ◽  
Kinetic Effects ◽  
Physical Phenomena ◽  
Surrounding Fluid

Nucleation and growth of crystalline phases play an important role in a variety of physical phenomena, ranging from freezing of liquids to assembly of colloidal particles. Understanding these processes in the context of colloidal crystallization is of great importance for predicting and controlling the structures produced. In many systems, crystallites that nucleate have structures differing from those expected from bulk equilibrium thermodynamic considerations, and this is often attributed to kinetic effects. In this work, we consider the self-assembly of a binary mixture of colloids in two dimensions, which exhibits a structural transformation from a non–close-packed to a close-packed lattice during crystal growth. We show that this transformation is thermodynamically driven, resulting from size dependence of the relative free energy between the two structures. We demonstrate that structural selection can be entirely thermodynamic, in contrast to previously considered effects involving growth kinetics or interaction with the surrounding fluid phase.

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