期刊
MACROMOLECULAR CHEMISTRY AND PHYSICS
卷 219, 期 5, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201700540
关键词
biodegradibility; drug delivery; hydrogels; magnetic actuation; microswimmers
资金
- National Science Foundation of China [21573053, 21603047, 21674029]
- China Postdoctoral Science Foundation [2016M590286]
A magnetically powered, star-shaped poly(vinylalcohol)/alginate (PVA/ALG) hydrogel microswimmer is described as a biodegradable motile vehicle for potential biomedical applications. The star-shaped microswimmer is fabricated by the addition of a mixture containing PVA, ALG, and magnetic nanoparticles in the optimal ratio into the designed star-shape silicon pattern and subsequent gelation of the mixture inside the pattern. This hydrogel microswimmer displays efficient and controllable propulsion in biological media under a vertical rotating magnetic field. Such star-shaped hydrogel microswimmers have excellent biodegradability and mechanical capability and thus show promise in biomedical applications such as drug transport and surgery.
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