Self-Healing Of Two-Dimensional Colloid Crystals

In this thesis, the characteristics, composition, configuration and applications of soft matter are discussed, and several important soft matters (polymer, granular matter, colloid, activation) are introduced in detail. The evolution of soft matter research is offered, and the meaning of this thesis is also presented.The process to a self-organization state is introduced theoretically, and the formation of super molecule self-organization, single molecule self-organization and entropy-driven self-organization is presented. At the same time, the control and design of self-organization due to substrate and topological and orientational confinement is analyzed.We also discuss the colloidal interactions such as interaction between hard spherial colloids, interaction between semi-hard spherial colloids and interaction between soft spherical colloids. Equilibrium configuration of colloids driven by entropy and optical scattering is also introduced.In this thesis, the simulation of the colloidal system in a rectangular or a trapezoid micro-channel is carried out, and the self-healing of colloid crystals is studied. A hard-spherical repulsion is assumed between the colloidal particles. It is shown through the simulation in a micro-channel that the colloid crystals destroyed by the introduction of a big colloidal particle can be self-healed. The threshold values of self-healing for the radius of the introduced colloidal particle, the ratio between the width of micro-channel and the radius of colloidal particles, and the shape of the confinement in a rectangular and a trapezoid micro-channel are found.