Pair correlations of the easy magnetisation axes of superparamagnetic nanoparticles in a ferrofluid/ferrocomposite DOI
Alexey O. Ivanov, Ekaterina A. Elfimova

Nanoscale, Journal Year: 2024, Volume and Issue: 16(33), P. 15730 - 15745

Published: Jan. 1, 2024

The widespread use of magnetic nanoparticles in modern technologies and medical applications highlights the need for reliable theoretical models that can predict their physical properties. pair correlation function two randomly selected superparamagnetic a ferrofluid/ferrocomposite is studied to depict joint probability density easy magnetisation axes across planes parameters major importance; these are interaction ferroparticles with an external field, energy anisotropy inside nanoparticle, interparticle dipole-dipole interaction. Assuming rotational symmetry system, we come conclusion correlations interest dependent only on polar angles, determining inclinations ferroparticle from direction field. dimer configuration, where close contact along field aligned, most probable. This configuration becomes more pronounced increasing energy, dipolar coupling constant,

Language: Английский

Experimental and Numerical Modeling of Magnetic Drug Targeting: Can We Trust Particle-Based Models? DOI
Angelika Thalmayer,

Keyu Xiao,

P O Wolff

et al.

IEEE journal on multiscale and multiphysics computational techniques, Journal Year: 2025, Volume and Issue: 10, P. 69 - 84

Published: Jan. 1, 2025

The development of trustworthy simulation models is crucial for planning drug administration in magnetic targeting (MDT) interventions future cancer treatment. In the MDT therapy, bound to nanoparticles, which act as carriers and are guided through cardiovascular system into tumor region using an external field. Thus, modeling represents a multiphysical problem can be approached either by particle-based or concentration-based models. this paper, both approaches implemented COMSOL Multiphysics typical scenario, verified measurements, compared among each other. Two different particle concentrations with without applied field Halbach array consisting five permanent magnets tube flow laminar velocity were investigated. Within scope, analytical model calculating response detection nanoparticles commercial susceptometer derived, too. Considering two investigated shows considerably better agreement experimental results spatial resolution reduced due limited number considered particles resulting inaccurate response. Overall, high new publications need research interdisciplinary improve therapeutic success.

Language: Английский

Citations

1
Wet chemical synthesis of hematite: Its magnetic property and sensing activity DOI

Saikat Jati,

Bodhishatwa Roy,

Sanatan Chattopadhyay

et al.

Materials Science and Engineering B, Journal Year: 2025, Volume and Issue: 314, P. 118057 - 118057

Published: Feb. 6, 2025

Language: Английский

Citations

1
Electromagnetic spectra of magnetite and MWCNT ferrofluids DOI
Alexandra A. Pavlova,

V. I. Suslayev,

E. Yu. Korovin

et al.

Russian Physics Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 14, 2025

Language: Английский

Citations

0
Magnetic Fluid‐Driven Vine Robots for Minimally Invasive Tissue Biopsy Sampling DOI Creative Commons
Joshua Davy,

Thomas Dean,

Nikita J. Greenidge

et al.

Advanced Intelligent Systems, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

There is a growing need for precise, minimally invasive biopsy techniques that reduce patient discomfort, improve sampling accuracy in hard‐to‐reach areas, and minimize tissue damage. Vine robots, type of continuum robot, offer promising solution with their unique ability to evert, allowing them navigate complex environments while reducing friction. This article presents novel vine robot design powered by magnetic fluid. The fluid drives both growth through pressurization enables precise steering manipulation using external fields. Unlike previous designs, the robot's high volume ensures control even under pressure, maintaining fully soft structure. allows controlled needle movements during biopsies. Additionally, achieves passive stabilization pressing against surrounding walls. stabilization, combined forces, can exert up 1.26 N insertion force at tip, enabling effective penetration. Experiments are conducted 5 mm diameter, 145 long fluid‐driven demonstrating movement free space, narrow constrictions, within phantoms modeled after human bronchial anatomy. These results pave way potential application surgeries, particularly difficult‐to‐access areas body.

Language: Английский

Citations

0
Extension of Maxwell's Equations for Non-Stationary Magnetic Fluids Using Gauss's Divergence Theorem DOI Creative Commons
Mohammed Bouzidi,

Abdelfatah Nasri,

Mohamed Ben Rahmoune

et al.

Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 105126 - 105126

Published: April 1, 2025

Language: Английский

Citations

0
A New Type of Hydraulic Clutch with Magnetorheological Fluid: Theory and Experiment DOI Creative Commons
Karol Musiałek, Ireneusz Musiałek, Karol Osowski

et al.

Micromachines, Journal Year: 2024, Volume and Issue: 15(5), P. 572 - 572

Published: April 26, 2024

This paper presents a new type of hydraulic clutch operating by means magnetorheological (MR) fluids and the results achieved from both theoretical analysis experimental measurement. A system with MR working fluid rotating magnetic field located was designed. The based on principle using created an alternating current electromagnet to set in motion. To test field, were produced our laboratory, consisting solid iron particles various diameters mixed silicone oil. With core rheological properties assessed basis tests carried out Brookfield DV2T rheometer equipped device for generating field. characteristics tested specially built stand. It found that torque transmitted increased rotational speed lower beaker which placed. also greatest occurred highest content. Based structure is used, it has been shown design developed similar induction clutch, its correspond eddy clutch. Therefore, proposed can be applied stationary power transmission systems manner

Language: Английский

Citations

2
Experimental method for measuring binodal curves of magnetic fluids exhibiting field-induced magnetic condensation of nanoparticles DOI
А. С. Иванов, Sergey A. Somov

Journal of Molecular Liquids, Journal Year: 2024, Volume and Issue: 414, P. 126020 - 126020

Published: Sept. 27, 2024

Language: Английский

Citations

0
Pair correlations of the easy magnetisation axes of superparamagnetic nanoparticles in a ferrofluid/ferrocomposite DOI
Alexey O. Ivanov, Ekaterina A. Elfimova

Nanoscale, Journal Year: 2024, Volume and Issue: 16(33), P. 15730 - 15745

Published: Jan. 1, 2024

The widespread use of magnetic nanoparticles in modern technologies and medical applications highlights the need for reliable theoretical models that can predict their physical properties. pair correlation function two randomly selected superparamagnetic a ferrofluid/ferrocomposite is studied to depict joint probability density easy magnetisation axes across planes parameters major importance; these are interaction ferroparticles with an external field, energy anisotropy inside nanoparticle, interparticle dipole-dipole interaction. Assuming rotational symmetry system, we come conclusion correlations interest dependent only on polar angles, determining inclinations ferroparticle from direction field. dimer configuration, where close contact along field aligned, most probable. This configuration becomes more pronounced increasing energy, dipolar coupling constant,

Language: Английский

Citations

0