Tunable magnetic nanowires for biomedical and harsh environment applications
AuthorsIvanov, Yurii P.
Al-Nassar, Mohammed Y.
Perez, Jose E.
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Permanent link to this recordhttp://hdl.handle.net/10754/605225
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AbstractWe have synthesized nanowires with an iron core and an iron oxide (magnetite) shell by a facile low-cost fabrication process. The magnetic properties of the nanowires can be tuned by changing shell thicknesses to yield remarkable new properties and multi-functionality. A multi-domain state at remanence can be obtained, which is an attractive feature for biomedical applications, where a low remanence is desirable. The nanowires can also be encoded with different remanence values. Notably, the oxidation process of single-crystal iron nanowires halts at a shell thickness of 10 nm. The oxide shell of these nanowires acts as a passivation layer, retaining the magnetic properties of the iron core even during high-temperature operations. This property renders these core-shell nanowires attractive materials for application to harsh environments. A cell viability study reveals a high degree of biocompatibility of the core-shell nanowires.
CitationTunable magnetic nanowires for biomedical and harsh environment applications 2016, 6:24189 Scientific Reports
SponsorsResearch reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST). Support from Spanish MINECO under project MAT2013-48054-C2-1-R is also acknowledged. This paper contains results and findings of a research project partly funded by King Abdulaziz City for Science and Technology (KACST), Grant No. KACST GDRG AT-34-151.
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