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Near-infrared light-driven Janus capsule motors: Fabrication, propulsion, and simulation
- Source :
- Nano Research. 9:3747-3756
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- 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 µm·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.
- Subjects :
- Gold layer
Materials science
Near infrared light
Fabrication
Photothermal effect
Nanotechnology
02 engineering and technology
Propulsion
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Atomic and Molecular Physics, and Optics
0104 chemical sciences
Asymmetric distribution
General Materials Science
Janus
Electrical and Electronic Engineering
Nir laser
0210 nano-technology
Subjects
Details
- ISSN :
- 19980000 and 19980124
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Nano Research
- Accession number :
- edsair.doi...........dc05e215746a7d690931afcd6d282fea