The behavior of a magnetic filament in flow under the influence of an external magnetic field

被引：12

作者：

Lusebrink, Daniel ^{[1
,3
,4
]}

Cerda, Joan J. ^{[1
]}

Sanchez, Pedro A. ^{[2
]}

Kantorovich, Sofia S. ^{[2
,5
]}

Sintes, Tomas ^{[1
]}

机构：

[1] IFISC UIB CSIC Inst Fis Interdisciplinar & Sistem, Campus UIB, Palma De Mallorca 07122, Spain

[2] Univ Wien, Fac Phys, Boltzmanngasse 5, A-1090 Vienna, Austria

[3] Max Planck Inst Phys Komplexer Syst, Nothnitzer Str 38, D-01187 Dresden, Germany

[4] Univ British Columbia, UCB Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada

[5] Ural Fed Univ, Lenin Ave 51, Ekaterinburg 620000, Russia

来源：

JOURNAL OF CHEMICAL PHYSICS | 2016年 / 145卷 / 23期

基金：

欧盟地平线“2020”;

关键词：

POLYMER-SOLUTIONS; DYNAMICS; CHAINS; NANOPARTICLES; SIMULATION; EQUILIBRIUM; MIGRATION; COLLOIDS; BRUSHES;

D O I：

10.1063/1.4971860

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present an extensive numerical study of the behaviour of a filament made of ferromagnetic colloidal particles subjected to the simultaneous action of a fluid flow and a stationary external magnetic field perpendicular to the flow lines. We found that in the presence of a shear flow, the tumbling motion observed at zero field is strongly inhibited when the external magnetic field is applied. The field is able to stabilise the filament with a well defined degree of alignment that depends on the balance between hydrodynamic and magnetic torques. In addition, for a Poiseuille flow, it has been found that the initial position has a long lasting influence on the behaviour of the magnetic filament when the external field is applied. Published by AIP Publishing.

引用

页数：12

共 65 条

[1] Mesoscopic solvent simulations: Multiparticle-collision dynamics of three-dimensional flows [J].

Allahyarov, E ;

Gompper, G .

PHYSICAL REVIEW E, 2002, 66 (03) :1-036702

[2]

Arnold A., 2013, MESHFREE METHODS PAR, V89, P1

[3] Modeling the locomotion of the African trypanosome using multi-particle collision dynamics [J].

Babu, Sujin B. ;

Stark, Holger .

NEW JOURNAL OF PHYSICS, 2012, 14

[4] Relaxation of stretched DNA in slitlike confinement [J].

Balducci, A. ;

Hsieh, C. -C. ;

Doyle, P. S. .

PHYSICAL REVIEW LETTERS, 2007, 99 (23)

[5] Instability of elastic filaments in shear flow yields first-normal-stress differences [J].

Becker, LE ;

Shelley, MJ .

PHYSICAL REVIEW LETTERS, 2001, 87 (19)

[6] Ferromagnetic microswimmer [J].

Belovs, M. ;

Cebers, A. .

PHYSICAL REVIEW E, 2009, 79 (05)

[7] Self-Assembly of Polymer-Coated Ferromagnetic Nanoparticles into Mesoscopic Polymer Chains [J].

Benkoski, Jason J. ;

Bowles, Steven E. ;

Jones, Ronald L. ;

Douglas, Jack F. ;

Pyun, Jeffrey ;

Karim, Alamgir .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2008, 46 (20) :2267-2277

[8] Photocurable oil/water interfaces as a universal platform for 2-D self-assembly [J].

Benkoski, Jason J. ;

Jones, Ronald L. ;

Douglas, Jack F. ;

Karim, Alamgir .

LANGMUIR, 2007, 23 (07) :3530-3537

[9] Field induced formation of mesoscopic polymer chains from functional ferromagnetic colloids [J].

Benkoski, Jason J. ;

Bowles, Steven E. ;

Korth, Bryan D. ;

Jones, Ronald L. ;

Douglas, Jack F. ;

Karim, Alamgir ;

Pyun, Jeffrey .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (19) :6291-6297

[10] Generation of hierarchical topologies from photocrosslinkable, particle-stabilized emulsions [J].

Benkoski, Jason J. ;

Hu, Hua ;

Karim, Alamgir .

MACROMOLECULAR RAPID COMMUNICATIONS, 2006, 27 (15) :1212-1216

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