Catalytic Janus Motors on Microfluidic Chip: Deterministic Motion for Targeted Cargo Delivery

被引：407

作者：

Baraban, Larysa ^{[1
]}

Makarov, Denys ^{[1
]}

Streubel, Robert ^{[1
,2
]}

Moench, Ingolf ^{[1
]}

Grimm, Daniel ^{[1
]}

Sanchez, Samuel ^{[1
]}

Schmidt, Oliver G. ^{[1
,2
]}

机构：

[1] IFW Dresden, Inst Integrat Nanosci, D-01069 Dresden, Germany

[2] Tech Univ Chemnitz, D-09107 Chemnitz, Germany

来源：

ACS NANO | 2012年 / 6卷 / 04期

关键词：

catalytic engines; synthetic micromotors; Janus particles; cargo delivery; perpendicular magnetic anisotropy; microfluidics; AUTONOMOUS MOVEMENT; TRANSPORT; NANOMOTORS; FABRICATION; ENGINES;

D O I：

10.1021/nn300413p

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

We fabricated self-powered colloidal Janus motors combining catalytic and magnetic cap structures, and demonstrated their performance for manipulation (uploading, transportation, delivery) and sorting of microobjects on microfluidic chips. The specific magnetic properties of the Janus motors are provided by ultrathin multilayer films that are designed to align the magnetic moment along the main symmetry axis of the cap. This unique property allows a deterministic motion of the Janus particles at a large scale when guided in an external magnetic field. The observed directional control of the motion combined with extensive functionality of the colloidal Janus motors conceptually opens a straightforward route for targeted delivery of species, which are relevant in the field of chemistry, biology, and medicine.

引用

页码：3383 / 3389

页数：7

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