链嫁接粒子在活性粒子浴中的定向转动
详细信息 查看官网全文
- 英文论文题名：The Unidirectional Rotation of Grafted-Chain Particle Immersed in a bath of Active Particles
- 论文作者：李慧姝 ; 陈康 ; 田文得
- 英文论文作者：Huishu Li ; Kang Chen ; Wende Tian ; Center for Soft Condensed Matter Physics and Interdisciplinary Research ; Soochow University
- 年：2016
- 作者机构：苏州大学软凝聚态物理及交叉研究中心;
- 论文关键词：微转子 ; 自发对称破缺 ; 分子动力学模拟
- 会议召开时间：2016-08-25
- 会议录名称：中国化学会2016年软物质理论计算与模拟会议论文摘要集
- 语种：中文
- 分类号：O347.6
- 学会代码：ZGHY
- 会议名称：中国化学会2016年软物质理论计算与模拟会议
- 会议地点：中国天津
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：107k
- 原文格式：D
- 会议级别：全国
摘要
实验和模拟研究发现将自身几何非对称的齿轮浸没在细菌等活性粒子浴中,齿轮会发生定向转动。这被认为是制造微观马达的一个途径。非对称性是产生这种定向转动的必要条件。在二维的模拟中,我们将柔性链均匀嫁接在胶体(圆环)表面,置于活性粒子浴中,发现嫁接的链会产生集体的、自发的不对称性,从而使整个圆环发生定向转动。我们分析了链的对称性破缺程度,研究了定向转动产生的条件,并通过改变体系中嫁接柔性链的长度、活性粒子的自驱能力大小以及活性粒子浴的密度来调控转子定向旋转的转速等等。
Experiment and simulation studies found that when an original geometric asymmetric gear immersed in a bath of active particles(el.bacteria),the unidirectional rotation of gear will happen.This is considered an essential condition of manufacturing the micro motor.In two-dimensional simulation,we graft flexible chains uniformly on the surface of colloid(ring),and place it in a bath of active particles,then we found that grafting chains can produce collective,spontaneous asymmetry,resulted in the unidirectional rotation of the whole circle.We analyzed the degree of symmetry broken for the chains,studied the condition for the generation of unidirectional rotation,and controlled the rotational speed of the motor by changing the length of the grafting flexible chain,the self-propulsion of active particles and the density of active particles in the system.
Experiment and simulation studies found that when an original geometric asymmetric gear immersed in a bath of active particles(el.bacteria),the unidirectional rotation of gear will happen.This is considered an essential condition of manufacturing the micro motor.In two-dimensional simulation,we graft flexible chains uniformly on the surface of colloid(ring),and place it in a bath of active particles,then we found that grafting chains can produce collective,spontaneous asymmetry,resulted in the unidirectional rotation of the whole circle.We analyzed the degree of symmetry broken for the chains,studied the condition for the generation of unidirectional rotation,and controlled the rotational speed of the motor by changing the length of the grafting flexible chain,the self-propulsion of active particles and the density of active particles in the system.
引文