Magnetic Nanorods: Genesis, Self-Organization and Applications
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Rainer Birringer
Magnetic-field-assisted self-assembly of magnetic dipole moment carrying iron nanoparticles is shown to result in the formation of magnetic and mechanically stiff nanoscale rods. The cooperative behavior of an ensemble of such rods and bundles thereof exhibits self-organized pattern formation on different length scales. Pattern formation on large length scales reveals great similarity with physical systems undergoing spinodal decomposition. Possible applications for dipolar magnetic nanorods in the field of perpendicular storage media are highlighted. We discuss an aerosol-synthesis-route allowing to prepare ferrofluids (FF) with shape-anisotropic particles constituting the magnetic phase immersed in the nonmagnetic carrier fluid. These so-called nanorod FF unveil a two orders of magnitude increase of viscosity enforced by an applied field of 10mT even at shear rates larger than 10-2s. This raises prospects for applications in microfluidics and MEMS.
© Oldenbourg Wissenschaftsverlag
Artikel in diesem Heft
- Preface: SFB 277: Materials Dominated by their Interfaces
- Magnetic Nanorods: Genesis, Self-Organization and Applications
- Thermodynamic and Structural Investigations of Condensates of Small Molecules in Mesopores
- Precursorchemistry with Metalalkoxides and their Use for Nano-Scaled Materials
- One-Dimensional Semiconductor Nanostructures: Growth, Characterization and Device Applications
- Nanocrystalline Metals Prepared by Electrodeposition
- Investigation of Nanocrystalline Materials Using Radioactive Isotopes
- Theoretical Studies of Structural, Energetic, and Electronic Properties of Clusters
- Photoemission Investigation of the L¯-Gap Surface States on Clean and Rare Gas-Covered Noble Metal (111)-Surfaces
- Computer Simulations of Phase Transitions and Dynamics in Confined Systems
- Quantitative Evaluation of Elastic Properties of Nano-Crystalline Nickel Using Atomic Force Acoustic Microscopy
- Mechanical Properties of Nanomaterials Examined with a NI-AFM
- Equilibrium and Nonequilibrium Behaviour of Ferrofluids – Experiments and Theory
- Combinatorial Fabrication of Thin Film-Libraries and Evaluation of their Piezoelectricity by Ultrasonic Piezo-Mode Imaging
Artikel in diesem Heft
- Preface: SFB 277: Materials Dominated by their Interfaces
- Magnetic Nanorods: Genesis, Self-Organization and Applications
- Thermodynamic and Structural Investigations of Condensates of Small Molecules in Mesopores
- Precursorchemistry with Metalalkoxides and their Use for Nano-Scaled Materials
- One-Dimensional Semiconductor Nanostructures: Growth, Characterization and Device Applications
- Nanocrystalline Metals Prepared by Electrodeposition
- Investigation of Nanocrystalline Materials Using Radioactive Isotopes
- Theoretical Studies of Structural, Energetic, and Electronic Properties of Clusters
- Photoemission Investigation of the L¯-Gap Surface States on Clean and Rare Gas-Covered Noble Metal (111)-Surfaces
- Computer Simulations of Phase Transitions and Dynamics in Confined Systems
- Quantitative Evaluation of Elastic Properties of Nano-Crystalline Nickel Using Atomic Force Acoustic Microscopy
- Mechanical Properties of Nanomaterials Examined with a NI-AFM
- Equilibrium and Nonequilibrium Behaviour of Ferrofluids – Experiments and Theory
- Combinatorial Fabrication of Thin Film-Libraries and Evaluation of their Piezoelectricity by Ultrasonic Piezo-Mode Imaging
