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
Online Publication Date2016-04-13
Print Publication Date2016-07
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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