The Self-Propulsion of the Spherical Pt-SiO2 Janus Micro-Motor
文献类型：期刊论文
| 作者 | Zhang J; Zheng X(郑旭); Cui HH(崔海航) ; Silber-Li ZH(李战华)
|
| 刊名 | MICROMACHINES
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 8期号:4 |
| 关键词 | Janus micromotor self-diffusiophoresis bubble propulsion |
| ISSN号 | 2072-666X |
| 中文摘要 | The double-faced Janus micro-motor, which utilizes the heterogeneity between its two hemispheres to generate self-propulsion, has shown great potential in water cleaning, drug delivery in micro/nanofluidics, and provision of power for a novel micro-robot. In this paper, we focus on the self-propulsion of a platinum-silica (Pt-SiO2) spherical Janus micro-motor (JM), which is one of the simplest micro-motors, suspended in a hydrogen peroxide solution (H2O2). Due to the catalytic decomposition of H2O2 on the Pt side, the JM is propelled by the established concentration gradient known as diffusoiphoretic motion. Furthermore, as the JM size increases to O (10 mu m), oxygen molecules nucleate on the Pt surface, forming microbubbles. In this case, a fast bubble propulsion is realized by the microbubble cavitation-induced jet flow. We systematically review the results of the above two distinct mechanisms: self-diffusiophoresis and microbubble propulsion. Their typical behaviors are demonstrated, based mainly on experimental observations. The theoretical description and the numerical approach are also introduced. We show that this tiny motor, though it has a very simple structure, relies on sophisticated physical principles and can be used to fulfill many novel functions. |
| 类目[WOS] | Nanoscience & Nanotechnology ; Instruments & Instrumentation |
| 研究领域[WOS] | Science & Technology - Other Topics ; Instruments & Instrumentation |
| 关键词[WOS] | LOW-REYNOLDS-NUMBER ; CATALYTIC MICROMOTORS ; AUTONOMOUS MOVEMENT ; MOTION ; NANOMOTORS ; WATER ; DIFFUSIOPHORESIS ; MICRO/NANOMOTORS ; FABRICATION ; PARTICLES |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000404117100030 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/60640]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang J,Zheng X,Cui HH,et al. The Self-Propulsion of the Spherical Pt-SiO2 Janus Micro-Motor[J]. MICROMACHINES,2017,8(4). |
| APA | Zhang J,Zheng X,Cui HH,&Silber-Li ZH.(2017).The Self-Propulsion of the Spherical Pt-SiO2 Janus Micro-Motor.MICROMACHINES,8(4). |
| MLA | Zhang J,et al."The Self-Propulsion of the Spherical Pt-SiO2 Janus Micro-Motor".MICROMACHINES 8.4(2017). |
入库方式： OAI收割
来源：力学研究所
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