活性粒子浴中聚合物嫁接胶体形成的微转子
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- 英文论文题名：Micro-rotor of chain-grafted colloids in the active bath
- 论文作者：陈康 ; 李慧姝 ; 田文得
- 英文论文作者：Kang Chen ; Hui-shu Li ; Wen-de Tian ; Center for Soft Condensed Matter Physics & Interdisciplinary Research ; College of Physics ; Optoelectronics and Energy ; Soochow University
- 年：2016
- 作者机构：苏州大学物理科学与技术学院;
- 论文关键词：活性物质 ; 胶体 ; 聚合物刷 ; 棘轮效应
- 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：O648.1;O631
- 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：91k
- 原文格式：D
- 会议级别：全国
摘要
活性粒子体系是典型的非平衡动力学系统,有着丰富的非平衡物理现象。比如把形状不对称的微齿轮结构放在包含细菌或其它活性粒子的溶液中,齿轮会自发的定向旋转,从而可以对外做功。要形成这样的定向旋转,体系要引入一定的不对称性,如转子形状或表面性质的不对称性。这里我们发现把表面嫁接长链的胶体颗粒放入活性粒子浴中,长链的形状和分布会自发的产生不对称并形成定向的旋转。我们分析了不对称产生的条件,转子旋转的动力学特征等。
The suspension of active Brownian particles is a typical nonequilibrium dynamic system,exhibiting very rich intriguing phenomena.For example,a shape-asymmetric micro-gear can spontaneous rotate in the desired direction when immersed in bacterial bath,which convert chemical energy into mechanical work in the micrometer scale.Asymmetry in the shape or interfacial properties such as elasticity,roughness,etc.is necessary to generate the directional rotation.Here we find the chains grafted on the surface of a spherical colloidal particle spontaneously generate asymmetric shape in the bath of active particles and hence lead to directional rotation of the colloidal particle.The condition to generate the asymmetry shape and dynamic behavior of the rotation are investigated.
The suspension of active Brownian particles is a typical nonequilibrium dynamic system,exhibiting very rich intriguing phenomena.For example,a shape-asymmetric micro-gear can spontaneous rotate in the desired direction when immersed in bacterial bath,which convert chemical energy into mechanical work in the micrometer scale.Asymmetry in the shape or interfacial properties such as elasticity,roughness,etc.is necessary to generate the directional rotation.Here we find the chains grafted on the surface of a spherical colloidal particle spontaneously generate asymmetric shape in the bath of active particles and hence lead to directional rotation of the colloidal particle.The condition to generate the asymmetry shape and dynamic behavior of the rotation are investigated.
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