scholarly journals Dynamics of magnetic nanoparticles in a viscous fluid driven by rotating magnetic fields

2017 ◽  
Vol 95 (10) ◽  
Author(s):  
Klaus D. Usadel
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetic Fields ◽  
Viscous Fluid ◽  
Rotating Magnetic Fields

Frequency-dependent conversion of the torque of a rotating magnetic field on a ferrofluid confined in a spherical cavity

Soft Matter ◽  
2019 ◽  
Vol 15 (44) ◽  
pp. 9018-9030
Author(s):  
Klaus D. Usadel ◽  
Anastasiya Storozhenko ◽  
Igor Arefyev ◽  
Hajnalka Nádasi ◽  
Torsten Trittel ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Nanoparticles ◽  
Magnetic Fields ◽  
Spherical Cavity ◽  
Rotating Magnetic Field ◽  
Rotating Magnetic Fields ◽  
Frequency Dependent

The dynamics of magnetic nanoparticles in rotating magnetic fields is studied both experimentally and theoretically.

scholarly journals Magneto-mechanical destruction of cancer-associated fibroblasts using ultra-small iron oxide nanoparticles and low frequency rotating magnetic fields.

2021 ◽  
Author(s):  
Sara Lopez ◽  
Nicolas Hallali ◽  
Yoann Lalatonne ◽  
Arnaud Hillion ◽  
Joana Antunes ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Magnetic Nanoparticles ◽  
Cancer Therapy ◽  
Magnetic Fields ◽  
Low Frequency ◽  
Oxide Nanoparticles ◽  
Cancer Associated Fibroblasts ◽  
Rotating Magnetic Fields ◽  
Mechanical Destruction ◽  
Interesting Approach

The destruction of cells using the mechanical activation of magnetic nanoparticles by low-frequency magnetic fields constitutes a recent and interesting approach in cancer therapy. Here, we showed that superparamagnetic iron...

scholarly journals Directing the orientational alignment of anisotropic magnetic nanoparticles using dynamic magnetic fields

2015 ◽  
Vol 181 ◽  
pp. 449-461 ◽  
Author(s):  
Daniel Hoffelner ◽  
Matthias Kundt ◽  
Annette M. Schmidt ◽  
Emmanuel Kentzinger ◽  
Philipp Bender ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electron Microscopy ◽  
Magnetic Properties ◽  
Magnetic Nanoparticles ◽  
Magnetic Fields ◽  
Rotating Magnetic Fields ◽  
X Ray ◽  
X Ray Scattering ◽  
Field Geometry ◽  
The Magnetic Field

The structure-directing influence of static and dynamic, i.e. rotating, magnetic fields on the orientational alignment of spindle-type hematite particles with a high aspect ratio is investigated. Structural characterization using electron microscopy and small-angle X-ray scattering confirms a nearly collinear particle arrangement with orientation of the main particle axis either parallel or perpendicular to the substrate as directed by the magnetic field geometry. The combination of large structural and magnetocrystalline anisotropies results in significantly different, strongly anisotropic magnetic properties of the assemblies revealed by directional magnetization measurements.

Non-linear alignment dynamics in suspensions of platelets under rotating magnetic fields

Soft Matter ◽  
2012 ◽  
Vol 8 (29) ◽  
pp. 7604-7609 ◽  
Author(s):  
Randall M. Erb ◽  
Jana Segmehl ◽  
Michalis Charilaou ◽  
Jörg F. Löffler ◽  
André R. Studart
Keyword(s):  
Magnetic Nanoparticles ◽  
Magnetic Fields ◽  
Applied Field ◽  
Rotating Magnetic Fields ◽  
Non Linear ◽  
Linear Alignment

Under rotating magnetic fields, micron-sized platelets suspended in a fluid and decorated with magnetic nanoparticles are found to shift from a rotating motion to a biaxially-aligned state above a given frequency of the applied field.

Behaviors of Bio-Functionalized Magnetic Nanoparticle Clusters in a Rotating Magnetic Field

2012 ◽  
Author(s):  
Chin-Yih Hong ◽  
Ji-Ching Lai ◽  
Chia-Chung Tang
Keyword(s):  
Magnetic Field ◽  
Aqueous Solution ◽  
Magnetic Nanoparticles ◽  
Magnetic Fields ◽  
Magnetic Nanoparticle ◽  
Critical Diameter ◽  
Rotating Magnetic Field ◽  
Magnetic Clusters ◽  
Rotating Magnetic Fields ◽  
Nanoparticle Clusters

Manipulation of magnetic nanoparticles has many applications in several fields and the behaviors of magnetic nanoparticles subjected to rotating or alternating magnetic fields attracted more attention from biomedical applications. In an aqueous solution containing bio-functionalized magnetic nanoparticles, due to the interaction between biomolecules, these nanoparticles agglomerate and form clusters with various sizes and shapes. In this study, the behaviors of magnetic nanoparticle clusters in an aqueous solution under rotating magnetic fields were investigated. Due to the interaction between the rotating magnetic field and the net magnetic dipole moment, the clusters were subjected to forced vibration. Two motion modes of clusters were observed as the magnetic field rotated. These two modes are rotation and oscillation. The diameters of the magnetic clusters with rotational or oscillational motions were measured. A critical diameter range of magnetic cluster was defined and the range is between 10.21 μm and 6.17 μm that could be used to distinguish rotation and oscillation of clusters.

Earth optimization of space experiment on growth of germanium by floating-zone technique with the use of rotating magnetic fields

2001 ◽  
Vol 46 (1) ◽  
pp. 148-153 ◽  
Author(s):  
A. V. Kartavykh ◽  
É. S. Kopeliovich ◽  
M. G. Mil’vidskii ◽  
V. V. Rakov
Keyword(s):  
Magnetic Fields ◽  
Space Experiment ◽  
Floating Zone ◽  
Rotating Magnetic Fields
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