Analysis of temperature dependence in ferrofluid optical transmission dynamics after magnetic field commutation

Sanz-Felipe, Ángel; Martín, José Carlos

doi:10.1016/j.jmmm.2021.167836

Cited by 4 publications

(1 citation statement)

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“…The particle polydispersity, PdI = 0.176, indicates that the sample is close to being considered monodispersed, so particles have been simulated as identical spheres for simplicity. The superparamagnetic behavior of the magnetic cores have been checked by measuring the M − H curve [28], so they are monodomain and it is valid to assign the saturation magnetization value to each particle in the simulation. For Brownian and friction effects, viscosity considered in the simulations is η = 1 mPs, as a reference value corresponding to water at 20 • C.…”

Section: Numerical Methods and Considerationsmentioning

confidence: 99%

Numerical calculation of ferrofluid optical transmission evolution after magnetic field switch-on

Sanz-Felipe

Martín

2021

J. Phys. D: Appl. Phys.

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A method to calculate the optical transmission evolution of a ferrofluid after exposure to an external magnetic field is proposed. In the first part of this work, a simulation program is employed to simulate the nanoparticle rearrangement for different particle concentrations and different magnetic field intensities. In the second part, the simulated particle distributions' optical response is determined by means of a mixture law, which avoids typical huge computational times associated to this stage of the calculation. Experimental and simulated results with both parallel and perpendicular magnetic field orientations with respect to the incident light are compared. A significant correlation is obtained, which proves the usefulness of the proposed method in order to obtain the optical transmission evolution of a ferrofluid.

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Section: Numerical Methods and Considerationsmentioning

confidence: 99%