自驱动Janus微球分数布朗运动的颗粒动力学模拟
Particle dynamics simulation on fractional Brownian motion of self-propellant Janus microsphere
查看参考文献21篇
|
文摘
|
该文通过分析Janus微球的运动过程,建立了包括随机布朗力、布朗力矩、自驱动力及Stokes阻力在内的颗粒动力学模型,通过数值模拟手段研究了不同粒径和不同自驱动速度下Janus微球的分数布朗运动,获得了不同的运动模式、均方位移及Hurst指数。模拟结果表明,Janus微球的均方位移随时间非线性增加,在不同观察时间下Janus微球可呈现出布朗运动、自驱动及类布朗运动的特征,Hurst指数亦产生相应变化。数值模拟结果与实验结果很好地符合,反映出Janus微球的分数布朗运动特性,说明所建颗粒力学模型的合理性,为今后Janus微球的操控与具体应用奠定了基础。 |
|
其他语种文摘
|
Based on Janus microsphere's motion analysis, the particle dynamic model involving random Brownian force and toque, self-propulsion and Stokes drag are constructed. Through numerical solving, the effect of different diameters and different self-propulsion strength on fractional Brownian motion are studied. Different motion modes and the mean square displacement < ?L~2 > and Hurst indexes are obtained. The simulation results show that < ?L~2 > increases with At nonlinearly, Janus particle may be characteriged as the Brownian motion, self-propulsion and Brownian-like motion under the different At and Hurst indexes also change correspondingly. Numerical simulation and experimental observation are in good agreement, which proves the present model reasonable and also provides the foundation for the followed manipulation of Janus particle and the practice applications. |
|
来源
|
水动力学研究与进展. A辑
,2014,29(4):377-384 【核心库】
|
|
DOI
|
10.3969/j.issn1000-4874.2014.04.001
|
|
关键词
|
Janus微球
;
数值模拟
;
自驱动
;
分数布朗运动
|
|
地址
|
1.
西安建筑科技大学环境与市政工程学院, 陕西, 西安, 710055
2.
中国科学院力学研究所, 非线性力学国家重点实验室, 北京, 100190
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1000-4874 |
|
学科
|
力学 |
|
基金
|
国家自然科学基金
;
国家教育部高等学校博士学科点专项科研基金
;
陕西省教育厅专项科研计划项目
|
|
文献收藏号
|
CSCD:5207311
|
参考文献 共
21
共2页
|
|
1.
Hida T. Brownian motion.
Applications of Mathematics,1980,11:44-113
|
被引
2
次
|
|
|
|
|
2.
Beckersd J V L. Fractal structure and specific surface of nanoporous silica.
International Journal of Inorganic Materials,2001,3(2):175-178
|
被引
4
次
|
|
|
|
|
3.
Mandelbrot B.
分形对象,1999:23-25
|
被引
2
次
|
|
|
|
|
4.
Han Y. Brownian motion of an ellipsoid.
Science,2006,314(5799):626-630
|
被引
21
次
|
|
|
|
|
5.
Li T. Measurement of the instantaneous velocity of a Brownian particle.
Science,2010,328(5986):1673-1675
|
被引
20
次
|
|
|
|
|
6.
万黎明. 液体分子分数布朗运动的研究.
工程热物理学报,2005,26:5-8
|
被引
2
次
|
|
|
|
|
7.
Granick S. Janus particles.
Physics Today,2009,62:68-69
|
被引
3
次
|
|
|
|
|
8.
Ismagilov R F. Autonomous movement and self-assembly.
Angewandte Chemie,2002,114(4):674-676
|
被引
26
次
|
|
|
|
|
9.
Rucker G. Chemically powered nanodimers.
Physical Review Letters,2007,98(15):150603
|
被引
5
次
|
|
|
|
|
10.
Dabiri G A. Listeria monocytogenes moves rapidly through the host-cell cytoplasm by inducing directional actin assembly.
Proceedings of the National Academy of Sciences,1990,87(16):6068-6072
|
被引
1
次
|
|
|
|
|
11.
Patra D. Intelligent, self-powered, drug delivery systems.
Nanoscale,2013,5(4):1273-1283
|
被引
15
次
|
|
|
|
|
12.
Orozco J. Artificial enzyme-powered microfish for water-quality testing.
ACS Nano,2012,7(1):818-824
|
被引
18
次
|
|
|
|
|
13.
Golestanian R. Designing phoretic micro-and nano-swimmers.
New Journal of Physics,2007,9(5):126
|
被引
13
次
|
|
|
|
|
14.
Howse J R. Selfmotile colloidal particles: from directed propulsion to random walk.
Physical review letters,2007,99(4):048102
|
被引
37
次
|
|
|
|
|
15.
Ke H. Motion analysis of self-propelled Pt-Silica particles in hydrogen peroxide solutions.
The Journal of Physical Chemistry A,2010,114(17):5462-5467
|
被引
9
次
|
|
|
|
|
16.
Zheng X. Non-Gaussian statistics for the motion of self-propelled Janus particles: Experiment versus theory.
Physical Review E,2013,88(3):032304
|
被引
15
次
|
|
|
|
|
17.
杨轶. 非对称性Janus粒子的制备与可控组装.
物理化学学报,2012,28:2525-2535
|
被引
6
次
|
|
|
|
|
18.
王芹. Janus颗粒表面活性剂的研究进展.
应用化学,2010,27(7):745-753
|
被引
4
次
|
|
|
|
|
19.
Kim M. Effect of electrostatic, hydrodynamic, and Brownian forces on particle trajectories and sieving in normal flow filtration.
Journal of Colloid and Interface Science,2004,269(2):425-431
|
被引
10
次
|
|
|
|
|
20.
聂德明. 非球形颗粒布朗运动的涨落-格子Boltzmann数值研究.
计算物理,2012,29(1):101
|
被引
2
次
|
|
|
|
|
了解气象卫星更多信息，请访问