Near-infrared light-driven Janus capsule motors: Fabrication, propulsion, and simulation

被引：94

作者：

Wu, Yingjie ^{[1
]}

Si, Tieyan ^{[1
]}

Shao, Jingxin ^{[1
]}

Wu, Zhiguang ^{[1
]}

He, Qiang ^{[1
]}

机构：

[1] Harbin Inst Technol, Micro Nanotechnol Res Ctr, Minist Educ, Key Lab Microsyst & Microstruct Mfg, Yi Kuang Jie 2, Harbin 150080, Peoples R China

来源：

NANO RESEARCH | 2016年 / 9卷 / 12期

基金：

中国国家自然科学基金;

关键词：

layer-by-layer assembly; Janus micromotor; light-driven; active targeting; photothermal effect; SELF-PROPELLED MICROMOTORS; AUTONOMOUS MOVEMENT; DRUG-DELIVERY; MOTION; TRANSPORTATION; MICROCAPSULES; NANOMOTORS; COATINGS; NANORODS; BLOOD;

D O I：

10.1007/s12274-016-1245-0

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 report a fuel-free, near-infrared (NIR)-driven Janus microcapsule motor. The Janus microcapsule motors were fabricated by template-assisted polyelectrolyte layer-by-layer assembly, followed by spraying of a gold layer on one side. The NIR-powered Janus motors achieved high propulsion with a maximum speed of 42 A mu m center dot s(-1) in water. The propulsion mechanism of the Janus motor was attributed to the self-thermophoresis effect: The asymmetric distribution of the gold layer generated a local thermal gradient, which in turn generated thermophoretic force to propel the Janus motor. Such NIR-propelled Janus capsule motors can move efficiently in cell culture medium and have no obvious effects on the cell at the power of the NIR laser, indicating considerable promise for future biomedical applications.

引用

页码：3747 / 3756

页数：10

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