Results 171 to 180 of about 5,854 (223)

Magneto-hydrodynamic behavior of magnetic nanofluids in mini-channel heat sinks for electronics cooling. [PDF]

Sci Rep
Bhattacharyya S, Al Taisan N, Khatri S, Souayeh B, Alfannakh H, Vishwakarma DK.   +5 more
europepmc   +1 more source

Ferrofluid rotary seal with replenishment system for sealing liquids

Tribology International, 2020
Ferrofluid rotary seals are mechanical contact-free magnetic liquid seals that are characterised by their simple structure, low friction and ability to hermetically seal.
Karoen Van Der Wal, Ron A J Van Ostayen, Stefan G E Lampaert   +2 more
exaly   +2 more sources

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Ferrofluids

2023
Abstract An explanation of the structure and components in a ferrofluid is presented together with a simple preparation process to produce these magnetic liquids. Unusual phenomena such as the surface and labyrinthine instabilities are then described.
K. O’Grady, G. Vallejo Fernandez, A. Hirohata   +2 more
openaire   +1 more source

Shape-Reconfigurable Ferrofluids

Nano Letters, 2022
Ferrofluids (FFs) can adapt their shape to a magnetic field. However, they cannot maintain their shape when the magnetic field is removed. Here, with a magneto-responsive and reconfigurable interfacial self-assembly (MRRIS) process, we show that FFs can be structured by a magnetic field and maintain their shape, like solids, after removing the magnetic
Sai Zhao, Jun-Yan Zhang, Yuchen Fu, Shipei Zhu, Ho Cheung Shum, Xubo Liu, Zhaoyu Wang, Ruquan Ye, Ben Zhong Tang, Thomas P. Russell, Yu Chai   +10 more
openaire   +3 more sources

Structure of ferrofluid dynamics

Physical Review E, 2001
The complete magnetodissipative structure of ferrofluid dynamics is derived from general principles, without reference to the angular momentum of the ferromagnetic grains. The results are independent of most microscopic details, and easily interpret two previous experiments.
Müller, H., Liu, M.
openaire   +3 more sources

A Shapeshifting Ferrofluidic Robot

Soft Robotics, 2021
To create a miniature shapeshifting robot capable of controlled movement, subdivision, regeneration, passage through small channels, engulfment of particles, object manipulation, and flow manipulation, a droplet of magnetically responsive ferrofluid is used.
Reza, Ahmed, Mahdi, Ilami, Joseph, Bant, Borhan, Beigzadeh, Hamid, Marvi   +4 more
openaire   +2 more sources

Ultrasound Attenuation in Ferrofluids

Physical Review Letters, 2008
The absorption of acoustic energy by internal degrees of freedom of short chains is proposed as a new viable mechanism of ultrasound attenuation in ferrofluids. It is demonstrated that even though the volume fraction of the chains may be quite small, such an effect may reach the order of magnitude of viscous damping.
Mark, Shliomis, Michael, Mond, Konstantin, Morozov   +2 more
openaire   +2 more sources

Anomalous diffusion in ferrofluids

Physical Review E, 2009
By dynamic light scattering we have studied suspensions of ferrimagnetic maghemite (gamma-Fe2O3) nanoparticles in n -decane with attractive interparticle interaction. The measurements in the suspensions of different concentrations ranging from 0.21 to 25.8 wt % have been compared in zero external field and in the magnetic field of 270 mT.
Alenka, Mertelj, Luka, Cmok, Martin, Copic   +2 more
openaire   +2 more sources

Capillary viscosimetry on ferrofluids

Journal of Physics: Condensed Matter, 2008
Experiments performed for different ferrofluids under shear flow have shown that an increase of the magnetic field strength applied to the sample yields an increase of the fluid's viscosity, the so called magnetoviscous effect. It has been shown that the magnitude of the effect is strongly related to the modification of the microstructure of ...
L M, Pop, S, Odenbach
openaire   +2 more sources

An ultrasonic characterization of ferrofluid

Ultrasonics, 2009
Nanoparticles of Cr(2)O(3) are prepared through hydrothermal synthesis process using CrO(3)/PVA in aqueous solution using sucrose as a reducing agent. The calcination temperature is taken 300 and 350 degrees C. XRD and SEM of the powdered Cr(2)O(3) particles are done for the characterization. The average particle size is found 30-80 nm.
D K, Singh, D K, Pandey, R R, Yadav
openaire   +2 more sources