Colloidal crystallization and transport in stripes and mazes

被引：17

作者：

Helseth, LE ^{[1
]}

Backus, T

Johansen, TH

Fischer, TM

机构：

[1] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 2263, Singapore

[2] Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA

[3] Univ Oslo, Dept Phys, N-0316 Oslo, Norway

[4] Univ Houston, Texas Ctr Superconductiv & Adv Mat, Houston, TX 77004 USA

来源：

LANGMUIR | 2005年 / 21卷 / 16期

关键词：

D O I：

10.1021/la050827c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We study guided crystallization and transport of paramagnetic spheres on top of a magnetic film that arranges its domains into stripes or mazes. In the absence of liquid flow, the paramagnetic spheres are confined within the magnetic domains, and it is shown how the particles self-assemble into several interesting phases depending on the complexity of the domain patterns. We also find that colloids guided through a complex maze exhibit structured patterns that can be controlled by an external magnetic field. The results presented here could help us understand both static and dynamic properties of pattern formation in confined geometries of tunable complexity.

引用

页码：7518 / 7523

页数：6

共 15 条

[1] Control of particle alignment in water by an alternating electric field [J].

Abe, M ;

Yamamoto, A ;

Orita, M ;

Ohkubo, T ;

Sakai, H ;

Momozawa, N .

LANGMUIR, 2004, 20 (17) :7021-7026

[2] Symmetry control of polymer colloidal monolayers and crystals by electrophoretic deposition onto patterned surfaces [J].

Dziomkina, NV ;

Hempenius, MA ;

Vancso, GJ .

ADVANCED MATERIALS, 2005, 17 (02) :237-+

[3] Solving mazes using microfluidic networks [J].

Fuerstman, MJ ;

Deschatelets, P ;

Kane, R ;

Schwartz, A ;

Kenis, PJA ;

Deutch, JM ;

Whitesides, GM .

LANGMUIR, 2003, 19 (11) :4714-4722

[4] In situ study of colloid crystallization in constrained geometry [J].

Golding, RK ;

Lewis, PC ;

Kumacheva, E .

LANGMUIR, 2004, 20 (04) :1414-1419

[5] Particle interactions near the contact line in liquid drops [J].

Helseth, LE ;

Fischer, TM .

PHYSICAL REVIEW E, 2003, 68 (04)

[6] Domain wall tip for manipulation of magnetic particles [J].

Helseth, LE ;

Fischer, TM ;

Johansen, TH .

PHYSICAL REVIEW LETTERS, 2003, 91 (20)

[7] Assembling and manipulating two-dimensional colloidal crystals with movable nanomagnets [J].

Helseth, LE ;

Wen, HZ ;

Hansen, RW ;

Johansen, TH ;

Heinig, P ;

Fischer, TM .

LANGMUIR, 2004, 20 (17) :7323-7332

[8] Two-dimensional colloid crystals obtained by coupling of flow and confinement [J].

Kumacheva, E ;

Garstecki, P ;

Wu, HK ;

Whitesides, GM .

PHYSICAL REVIEW LETTERS, 2003, 91 (12) :128301-128301

[9] Example of a chaotic crystal: The labyrinth [J].

Le Berre, M ;

Ressayre, E ;

Tallet, A ;

Pomeau, Y ;

Di Menza, L .

PHYSICAL REVIEW E, 2002, 66 (02) :1-026203

[10] Fabrication of ordered macroporous cylinders by colloidal templating in microcapillaries [J].

Moon, JH ;

Kim, S ;

Yi, GR ;

Lee, YH ;

Yang, SM .

LANGMUIR, 2004, 20 (05) :2033-2035

← 1 2 →