title: Magnetic Compression of Polyelectrolyte Microcapsules for Controlled Release.
abstract: In this study, microcapsules with a magnetic particle as the core and polyelectrolyte multilayers as the shell were fabricated. The cavity of the microcapsules was created by etching the SiO2 layer, which was first coated on the magnetic core particle, and the size of the cavity can be adjusted by the thickness of the SiO2 layer. This magnetically responsive microcapsule deforms upon application of a constant magnetic field and results in the release of the core content, and the release velocity could be controlled by the strength of the magnetic field. This release mechanism is proactive and repeatable, combined with its localized and remote controllability; it can be a powerful tool for delivering medical agents on site.
authors.forename: Yanan
authors.initials: Y
authors.lastname: Hu
authors.affiliation: University of the Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Chuanyong
authors.initials: C
authors.lastname: Liu
authors.affiliation: University of the Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Dongzhi
authors.initials: D
authors.lastname: Li
authors.forename: Yue
authors.initials: Y
authors.lastname: Long
authors.forename: Kai
authors.initials: K
authors.lastname: Song
authors.forename: Chen-Ho
authors.initials: CH
authors.lastname: Tung
mesh_terms: D002214:Capsules / Q000737:chemistry; D004573:Electrolytes / Q000737:chemistry; D005290:Ferric Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D060526:Magnetic Fields; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D002214:Capsules; D004573:Electrolytes; D005290:Ferric Compounds; D011108:Polymers; C000499:ferric oxide; D012822:Silicon Dioxide