Visualization and measurement of the self-propelled and rotational motion of the Janus microparticles
文献类型：期刊论文
| 作者 | Zheng, Xu1; Wu, Meiling2; Kong, Fandong3; Cui, Haihang2; Silber-Li, Zhanhua1; Cui HH(崔海航)
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| 刊名 | JOURNAL OF VISUALIZATION
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| 出版日期 | 2015-08-01 |
| 卷号 | 18期号:3页码:425-435 |
| 通讯作者邮箱 | zhengxu@lnm.imech.ac.cn |
| 关键词 | Self-propulsion Janus microparticle Rotation |
| ISSN号 | 1343-8875 |
| 产权排序 | [Zheng, Xu; Silber-Li, Zhanhua] Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China; [Wu, Meiling; Cui, Haihang] Xian Univ Architecture & Technol, Xian 710055, Peoples R China; [Kong, Fandong] Shanghai Univ, Shanghai 200444, Peoples R China |
| 通讯作者 | Zheng, X (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China. |
| 中文摘要 | The self-propelled diffusiophoresis, induced by an asymmetric concentration gradient field, provides a new strategy to manipulate micro-objects (like some cells and colloids) in solutions. One example is the autonomous motion of the double-faced Janus microparticle (platinum coating on one half of a silica particle) due to a chemically catalyzed reaction (reduction of hydrogen peroxide) on the Pt surface. In this paper, a systematic method is developed to describe the details of self-propulsion and rotation of Janus microparticles, despite the difficulty induced by particle non-uniformity. From the measurement, we found that the particles presented a three-stage behavior of the dimensionless mean square displacement, and their displacement probability distribution formed a double-peaked structure. These results show the intrinsic characteristics and the non-Gaussian behavior of Janus particle's self-propulsion. Furthermore, the rotational motion is characterized by the rotational angle variation and the rotational diffusion coefficient. These results show that Brownian rotation still dominates the Janus microparticle's rotational motion, though the measured rotational diffusion coefficient presents an anomalous tendency. |
| 英文摘要 | The self-propelled diffusiophoresis, induced by an asymmetric concentration gradient field, provides a new strategy to manipulate micro-objects (like some cells and colloids) in solutions. One example is the autonomous motion of the double-faced Janus microparticle (platinum coating on one half of a silica particle) due to a chemically catalyzed reaction (reduction of hydrogen peroxide) on the Pt surface. In this paper, a systematic method is developed to describe the details of self-propulsion and rotation of Janus microparticles, despite the difficulty induced by particle non-uniformity. From the measurement, we found that the particles presented a three-stage behavior of the dimensionless mean square displacement, and their displacement probability distribution formed a double-peaked structure. These results show the intrinsic characteristics and the non-Gaussian behavior of Janus particle's self-propulsion. Furthermore, the rotational motion is characterized by the rotational angle variation and the rotational diffusion coefficient. These results show that Brownian rotation still dominates the Janus microparticle's rotational motion, though the measured rotational diffusion coefficient presents an anomalous tendency. |
| 学科主题 | Computer Science ; Imaging Science & Photographic Technology |
| 分类号 | Q4 |
| 类目[WOS] | Computer Science, Interdisciplinary Applications ; Imaging Science & Photographic Technology |
| 研究领域[WOS] | Computer Science ; Imaging Science & Photographic Technology |
| 关键词[WOS] | SWIMMERS ; HYDRODYNAMICS |
| 收录类别 | SCI |
| 原文出处 | http://dx.doi.org/10.1007/s12650-015-0299-5 |
| 语种 | 英语 |
| WOS记录号 | WOS:000358281200004 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/55330]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China 2.Xian Univ Architecture & Technol, Xian 710055, Peoples R China 3.Shanghai Univ, Shanghai 200444, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Xu,Wu, Meiling,Kong, Fandong,et al. Visualization and measurement of the self-propelled and rotational motion of the Janus microparticles[J]. JOURNAL OF VISUALIZATION,2015,18(3):425-435. |
| APA | Zheng, Xu,Wu, Meiling,Kong, Fandong,Cui, Haihang,Silber-Li, Zhanhua,&Cui HH.(2015).Visualization and measurement of the self-propelled and rotational motion of the Janus microparticles.JOURNAL OF VISUALIZATION,18(3),425-435. |
| MLA | Zheng, Xu,et al."Visualization and measurement of the self-propelled and rotational motion of the Janus microparticles".JOURNAL OF VISUALIZATION 18.3(2015):425-435. |
入库方式： OAI收割
来源：力学研究所
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