Related Experiment Video
Updated: Jun 14, 2025
09:54
Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons
Published on: July 14, 2021
4.8K
Tunable Properties of Non-Volatile Magnetic Mixtures on Different Surfaces
Sergio J Abellán-Martín1, Cristina Zapater1, Nerea González-Gallardo2
1Department of Analytical Chemistry, Nutrition and Food Science and University Institute of Materials, Faculty of Science, University of Alicante, P.O. Box 99, 03080, Alicante, Spain.
Summary
Surface properties significantly impact magnetic deep eutectic solvents (MDESs) and magnetic low-transition-temperature non-volatile mixtures (MLTTMs). Adherence to glass surfaces diminishes magnetism and performance, suggesting polypropylene as a preferred material.
Area of Science:
- Materials Science
- Analytical Chemistry
- Physical Chemistry
Background:
- Magnetic deep eutectic solvents (MDESs) and magnetic low-transition-temperature non-volatile mixtures (MLTTMs) are novel materials with potential applications.
- Understanding their behavior on different surfaces is crucial for optimizing their use.
Purpose of the Study:
- To investigate the influence of surface nature on the properties of MDESs and MLTTMs.
- To determine the compatibility of these magnetic mixtures with common laboratory materials.
Main Methods:
- Differential scanning calorimetry (DSC)
- Surface tension measurements
- Contact angle analysis
- Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX)
Main Results:
- MDESs and MLTTMs adhere to glass surfaces, leading to loss of magnetism and altered structural properties.
- Interaction with glass modifies the composition and performance of the magnetic mixtures.
- Use in dispersive liquid-liquid microextraction showed reduced efficiency and recovery due to adherence to glass walls.
Conclusions:
- The surface material significantly affects the performance of MDESs and MLTTMs.
- Glass surfaces are not recommended for handling these magnetic mixtures due to detrimental interactions.
- Polypropylene is recommended as a suitable material for handling MDESs and MLTTMs to preserve their properties and performance.
Related Concept Videos
01:31Ferromagnetism
2.4K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
2.4K
01:31Magnetic Susceptibility and Permeability
1.0K
In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
1.0K
01:24Potential Due to a Magnetized Object
266
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
The vector...
266
01:30Paramagnetism
2.5K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
2.5K
01:28Types Of Superconductors
954
A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
954
01:23Atomic Nuclei: Nuclear Relaxation Processes
632
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis, the precessing magnetic moments are randomly oriented around the z-axis.
632