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Low-energy magnetic field generator with a slit as an experimental space. Foto: Michal Rajňák

The new magnetic field generator to make measuring the properties of progressive materials easier

17. 2. 2022 | 182 visits

Slovak scientists have created a new non-energy intensive device that can generate a homogeneous magnetic field with excellent properties. Thanks to the device, it will be possible to measure, for example, the effect of the magnetic field on living organisms. It can also be used in experiments or industrial testing of new materials.

A team of scientists led by Michal Rajňák from the Institute of Experimental Physics SAS in Košice and Bystrík Dolník from the Technical University of Košice came up with a new type of structurally simple, reliable and energy-efficient device for measuring the magnetic and dielectric properties of thin layers of various progressive materials.

When testing the dielectric response of liquids and materials in external magnetic fields, developers often struggle with several limitations. "Current ways to measure these properties require a powerful power supply and robust solutions. This is related to the energy intensity of the magnetic field generation by the existing methods and the limited possibilities of changing the intensity of the magnetic field when using permanent magnets. It is not advantageous to use such solutions for testing thin non-conductive liquid or solid layers,” explained Michal Rajňák from ÚEF SAV.

The new magnetic field generator from the workshop of researchers in Košice is characterised by a compact shape, thanks to which it will be able to work in specialised laboratories, in a special atmosphere or at low temperatures up to 4 Kelvin (-269.15 °C).

"Our device can handle a significantly smaller volume of test liquid or material, and the magnetic field it generates is homogeneous. As a result, it achieves excellent parameters at the measuring point. Additionally, the device can change the intensity and properties of the magnetic field. It can also generate a magnetic field with an ultra-low or low frequency, thanks to which it can be used in the study of biological materials,” adds Bystrík Dolník from FEI TUKE.