Colloidal caterpillars for cargo transportation

被引:43
|
作者
Sasaki, Yuji [1 ]
Takikawa, Yoshinori [1 ]
Jampani, V. S. R. [2 ]
Hoshikawa, Hikaru [1 ]
Seto, Takafumi [1 ]
Bahr, Christian [2 ]
Herminghaus, Stephan [2 ]
Hidaka, Yoshiki [3 ]
Orihara, Hiroshi [1 ]
机构
[1] Hokkaido Univ, Fac Engn, Div Appl Phys, Kita Ku, Sapporo, Hokkaido 0608628, Japan
[2] Max Planck Inst Dynam & Self Org MPIDS, D-37077 Gottingen, Germany
[3] Kyushu Univ, Fac Engn, Dept Appl Quantum Phys & Nucl Engn, Fukuoka 8190395, Japan
关键词
LIQUID; CRYSTALS;
D O I
10.1039/c4sm01354a
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
Tunable transport of tiny objects in fluid systems is demanding in diverse fields of science such as drug delivery, active matter far from equilibrium, and lab-on-a-chip applications. Here, we report the directed motion of colloidal particles and self-assembled colloidal chains in a nematic liquid crystal matrix using electrohydrodynamic convection (EHC) rolls. The asymmetric distortion of the molecular orientation around the particles results - for single particles - in a hopping motion from one EHC roll to the next and - for colloidal chains - in a caterpillar-like motion in the direction perpendicular to the roll axes. We demonstrate the use of colloidal chains as microtraction engines for the transport of various types of microcargo.
引用
收藏
页码:8813 / 8820
页数:8
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