Dynamics of a paramagnetic colloidal particle driven on a magnetic-bubble lattice

被引：26

作者：

Soba, Alejandro ^{[1
]}

Tierno, Pietro ^{[1
]}

Fischer, Thomas M. ^{[2
]}

Sagues, Francesc ^{[1
]}

机构：

[1] Univ Barcelona, Dept Quim Fis, E-08028 Barcelona, Spain

[2] Univ Bayreuth, Inst Expt Phys 5, Bayreuth, Germany

来源：

PHYSICAL REVIEW E | 2008年 / 77卷 / 06期

关键词：

D O I：

10.1103/PhysRevE.77.060401

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We present a theoretical study of the recently observed dynamical regimes of paramagnetic colloidal particles externally driven above a regular lattice of magnetic bubbles [P. Tierno, T. H. Johansen, and T. M. Fischer, Phys. Rev. Lett. 99, 038303 (2007)]. An external precessing magnetic field alters the potential generated by the surface of the film in such a way to either drive the particle circularly around one bubble, ballistically through the array, or in triangular orbits on the interstitial regions between the bubbles. In the ballistic regime, we observe different trajectories performed by the particles phase locked with the external driving. Superdiffusive motion, which was experimentally found bridging the localized and delocalized dynamics, emerge only by introducing a certain degree of randomness into the bubbles size distribution.

引用

页数：4

共 24 条

[1]

DRUYVESTEYN WF, 1972, PHILIPS RES REP, V27, P7

[2] MAGNETORESISTANCE DUE TO CHAOS AND NONLINEAR RESONANCES IN LATERAL SURFACE SUPERLATTICES [J].

FLEISCHMANN, R ;

GEISEL, T ;

KETZMERICK, R .

PHYSICAL REVIEW LETTERS, 1992, 68 (09) :1367-1370

[3] Nanofilter array chip for fast gel-free biomolecule separation [J].

Fu, JP ;

Mao, P ;

Han, JY .

APPLIED PHYSICS LETTERS, 2005, 87 (26) :1-3

[4] Tilted Brownian ratchet for DNA analysis [J].

Huang, LR ;

Cox, EC ;

Austin, RH ;

Sturm, JC .

ANALYTICAL CHEMISTRY, 2003, 75 (24) :6963-6967

[5] Modeling molecular motors [J].

Julicher, F ;

Ajdari, A ;

Prost, J .

REVIEWS OF MODERN PHYSICS, 1997, 69 (04) :1269-1281

[6] Low-field transport relaxation measurements in superconducting Y1Ba2Cu3O7-δ -: art. no. 144513 [J].

Kiliç, K ;

Kiliç, A ;

Yetis, H ;

Çetin, O .

PHYSICAL REVIEW B, 2003, 68 (14)

[7] Kinetically locked-in colloidal transport in an array of optical tweezers [J].

Korda, PT ;

Taylor, MB ;

Grier, DG .

PHYSICAL REVIEW LETTERS, 2002, 89 (12) :128301-128301

[8] Nonequilibrium transport of rigid macromolecules in periodically constricted geometries [J].

Laachi, Nabil ;

Declet, Carmelo ;

Matson, Christina ;

Dorfman, Kevin D. .

PHYSICAL REVIEW LETTERS, 2007, 98 (09)

[9] Sorting on periodic surfaces [J].

Lacasta, AM ;

Sancho, JM ;

Romero, AH ;

Lindenberg, K .

PHYSICAL REVIEW LETTERS, 2005, 94 (16)

[10] Ratchet effect for cold atoms in an optical lattice [J].

Lundh, E ;

Wallin, M .

PHYSICAL REVIEW LETTERS, 2005, 94 (11)

← 1 2 3 →