Physicists keep improving 'smart' composites for biomedical sensors
IKBFU Physicists have successfully tested the new magnetic micro wire-based concept of "smart" composites production. The new composites are related to the multiferroic-class materials which have mutually controlled magnetic and electric properties. The effects observed in the compositions are considered to be a perspective platform for creating new devices from energy converters to highly sensitive sensors.
These magnet-electrical sensors are of high demand because of their use in health monitoring devices. There already are prototypes of the sensors and further research is going on to improve the sensors' functional characteristics.
The IKBFU Laboratory of Novel Magnetic Materials scientists have an idea to use the amorphous microwire composite as a magnetic component. This approach will allow the scientists to get a compact human-hair thick sensor, capable of registering even very weak magnetic fields.
Senior researcher of the IKBFU Laboratory of Novel Magnet Materials Karim Amirov said: "This new conception has already proved to be effective. We aim our research at both checking the conception and at getting the composition with maximal magneto-electric effect. This means that a series of experiments was conducted to search for such a microwire preparation protocol (annealing, removal of the glass shell) that would ultimately give us the maximum output. This is very important because after we understand how it works, what microwire to use and how to prepare it, the next step is to get such a composite in a flexible piezopolymer matrix. This will be another step towards the magnetoelectric sensor being developed for monitoring human parameters."
The article with the results of the research were published in the Materials scientific journal. The article authors are the scientists at the IKBFU Laboratory of Novel Magnetic Materials: Ph.D. candidates in physics and mathematics Karim Amirov, Valeria Rodionova and Irina Baraban, and Ph.D. in physics and mathematics Larisa Panina.
More information: Abdulkarim Amirov et al, Direct Magnetoelectric Effect in a Sandwich Structure of PZT and Magnetostrictive Amorphous Microwires, Materials (2020). DOI: 10.3390/ma13040916
Provided by Immanuel Kant Baltic Federal University