活性胶体的个体行为与动态自组装
发布时间：2018-09-18 12:00
【摘要】：近几年,活性物质的研究引起了科学界的高度兴趣,它们能够依靠不断消耗周围的能量实现自驱动,同时使系统处于热力学非平衡态,例如鱼群、鸟群、细菌菌落以及细胞组成的组织等.在这些群体中,个体成员之间可以通过某些简单的规则进行"通讯",进而呈现出有趣且相对复杂的群体行为.长期以来,细菌被用作模型系统以研究个体行为如何导致群体行为.最近,对能够自主运动和动态自组装的人造胶体颗粒的研究快速发展,并且受到了广泛的关注.这类胶体颗粒又被称为微纳米马达,能够自发运动,并且易于制备和功能化,具有良好的均一性,因而能作为细菌的补充,帮助我们更好地研究活性物质.本文综述了活性胶体领域近几年的主要发展,包括自然界中存在的微生物和人造胶体颗粒.在对细菌的研究进行简要介绍后,重点介绍了人造活性胶体颗粒实验方面的进展.首先介绍了几种主流的人造活性胶体体系,并且着重介绍了其驱动机理;随后概述了这些活性胶体颗粒在动态自组装方面的研究进展.活性胶体颗粒之间可以经由化学物质梯度、静电力相互作用、范德华力以及流体力学相互作用等机制,出现成对组装、团簇、群聚以及其他动态行为;最后对本领域未来的发展进行了讨论和展望.
[Abstract]:In recent years, the research of active substances has aroused great interest in the scientific community. They can drive themselves by constantly consuming the energy around them, while keeping the system in thermodynamic non-equilibrium states, such as fish flocks, birds and flocks. Bacterial colonies and tissue composed of cells, etc. In these groups, individual members can communicate with each other by some simple rules, thus presenting interesting and relatively complex group behavior. Bacteria have long been used as model systems to study how individual behavior leads to group behavior. Recently, the research of artificial colloidal particles which can move independently and dynamically self-assemble has been developed rapidly and received wide attention. This kind of colloidal particles, also known as micro-nano motors, can move spontaneously, and are easy to be prepared and functionalized, and have good homogeneity, so they can be used as a supplement to bacteria and help us to study active substances better. This paper reviews the main developments in the field of active colloids in recent years, including microbes and artificial colloid particles in nature. After a brief introduction of bacteria research, the progress of artificial active colloidal particles was introduced. Firstly, several kinds of main artificial active colloid systems are introduced, and the driving mechanism of these active colloidal particles is emphatically introduced, and then the research progress in dynamic self-assembly of these active colloidal particles is summarized. The active colloidal particles can be assembled in pairs, clusters, clusters and other dynamic behaviors through chemical gradients, electrostatic interactions, van der Waals forces and hydrodynamic interactions. Finally, the future development of this field is discussed and prospected.
【作者单位】： 哈尔滨工业大学深圳研究生院;上海交通大学物理与天文系;上海交通大学自然科学研究院;人工微结构科学与技术协同创新中心;
【基金】：国家自然科学基金(11402069,11422427) 深圳市孔雀技术创新项目(KQCX20140521144102503) 哈尔滨工业大学科研启动基金及杰出人才培育基金 上海高校特聘教授(东方学者)岗位计划(SHDP201301) 上海市教委科研创新项目(14ZZ030)资助
【分类号】：O648.1
[Abstract]:In recent years, the research of active substances has aroused great interest in the scientific community. They can drive themselves by constantly consuming the energy around them, while keeping the system in thermodynamic non-equilibrium states, such as fish flocks, birds and flocks. Bacterial colonies and tissue composed of cells, etc. In these groups, individual members can communicate with each other by some simple rules, thus presenting interesting and relatively complex group behavior. Bacteria have long been used as model systems to study how individual behavior leads to group behavior. Recently, the research of artificial colloidal particles which can move independently and dynamically self-assemble has been developed rapidly and received wide attention. This kind of colloidal particles, also known as micro-nano motors, can move spontaneously, and are easy to be prepared and functionalized, and have good homogeneity, so they can be used as a supplement to bacteria and help us to study active substances better. This paper reviews the main developments in the field of active colloids in recent years, including microbes and artificial colloid particles in nature. After a brief introduction of bacteria research, the progress of artificial active colloidal particles was introduced. Firstly, several kinds of main artificial active colloid systems are introduced, and the driving mechanism of these active colloidal particles is emphatically introduced, and then the research progress in dynamic self-assembly of these active colloidal particles is summarized. The active colloidal particles can be assembled in pairs, clusters, clusters and other dynamic behaviors through chemical gradients, electrostatic interactions, van der Waals forces and hydrodynamic interactions. Finally, the future development of this field is discussed and prospected.
【作者单位】： 哈尔滨工业大学深圳研究生院;上海交通大学物理与天文系;上海交通大学自然科学研究院;人工微结构科学与技术协同创新中心;
【基金】：国家自然科学基金(11402069,11422427) 深圳市孔雀技术创新项目(KQCX20140521144102503) 哈尔滨工业大学科研启动基金及杰出人才培育基金 上海高校特聘教授(东方学者)岗位计划(SHDP201301) 上海市教委科研创新项目(14ZZ030)资助
【分类号】：O648.1
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