Results 21 to 30 of about 5,854 (223)

Ferrofluids: properties and applications [PDF]

open access: yesBrazilian Journal of Physics, 2005
Magnetic fluids may be classified as ferrofluids (FF), which are colloidal suspensions of very fine (» 10 nm) magnetic particles, and magnetorheological fluids, which are suspensions of larger, usually non-stable, magnetic particles. We review the general classification and the main properties of FF, some theoretical models and a few applications.
Scherer, C., Figueiredo Neto, A. M.
openaire   +4 more sources

Effects of external magnetic field arrangements on thermomagnetic convection in ferrofluid around heated Micro-wire

open access: yes, 2023
Thermomagnetic convective cooling of a heated micro-wire in quiescent ferrofluid is experimentally investigated under various non-uniform external magnetic fields produced by permanent magnets.
Van Thanh Dau   +5 more
core   +1 more source

Synthesis and Evaluation on the Performance of Ferrofluid in Wastewater Treatment

open access: yes, 2023
Water contamination is created by industrial and agricultural development and is a primary source of water pollution. Iron oxides and magnetite are examples of IONPs with a high surface area and adsorption capacity that can easily bind to numerous ...
Gehad, Ibrahim
core   +1 more source

Surface-only ferrofluids [PDF]

open access: yesACM Transactions on Graphics, 2020
We devise a novel surface-only approach for simulating the three dimensional free-surface flow of incompressible, inviscid, and linearly magnetizable ferrofluids. A Lagrangian velocity field is stored on a triangle mesh capturing the fluid's surface. The two key problems associated with the dynamic simulation of the fluid's interesting geometry are the
Libo Huang, Dominik L. Michels
openaire   +2 more sources

Electromagnetic Linear Vibration Energy Harvester Using Sliding Permanent Magnet Array and Ferrofluid as a Lubricant

open access: yesMicromachines, 2017
We present an electromagnetic linear vibration energy harvester with an array of rectangular permanent magnets as a springless proof mass. Instead of supporting the magnet assembly with spring element, ferrofluid has been used as a lubricating material ...
Song Hee Chae   +4 more
doaj   +1 more source

Physical and Chemical Stability of Nanoparticles in Ferrofluid Before and After Impregnation: Implications for Magnetic Pore Fabric Studies

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Magnetic pore fabrics (MPFs) are a promising approach to explore the 3D pore space of rocks. There exist empirical relationships between the orientation, degree, and shape of MPF with pore space geometry and permeability anisotropy.
Andrea R. Biedermann   +3 more
doaj   +1 more source

CFD simulation of the effect of magnetic field on convective heat transfer and ferrofluid flow inside a pipe [PDF]

open access: yesمجله مدل سازی در مهندسی, 2022
Today, one of the best methods to improve heat transfer is using ferrofluid under the effect of a magnetic field. Ferrofluid is a stable suspension containing magnetic nanoparticles and a base fluid that nanoparticles has a higher heat conductivity than ...
Saman Mohammadi   +2 more
doaj   +1 more source

Numerical Investigation on Suppressing High Frequency Self-Excited Noises of Armature Assembly in a Torque Motor Using Ferrofluid

open access: yesShock and Vibration, 2017
Attempting to suppress high frequency self-excited noises of armature assembly, ferrofluid is added to the working clearances of torque motor. The mathematical model of resistance force of ferrofluid applied to armature is derived theoretically from ...
Hasiaoqier Han   +3 more
doaj   +1 more source

Magnetization of multicomponent ferrofluids [PDF]

open access: yesJournal of Physics: Condensed Matter, 2011
12 pages including 4 ...
Szalai, I., Dietrich, S.
openaire   +4 more sources

Effect of Rosensweig instability in a ferrofluid layer on reflection loss of a high-frequency electromagnetic wave

open access: yesAIP Advances, 2022
A ferrofluid layer separates into numerous subscale crests, which is referred to as Rosensweig instability, whose shape and size depend on the field condition and the composition of the ferrofluid. A ferrofluid consisting of nanoscale magnetite particles
Yan-Hom Li, Kuo-Lung Huang
doaj   +1 more source

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