BCMaterials Fortnightly Seminars #28

"Magnetically Tunable RF and Microwave Polymer Nanocomposite Materials"
KRISTEN STOJAK
(University of South Florida)
We have fabricated and studied a class of polymer nanocomposite (PNC) materials incorporating magnetic nanoparticles into various polymers. There has been much interest in these magnetic PNCs due to potential applications for EMI shielding, tunable electromagnetic devices and flexible electronics. The resonance frequency can be tuned in these PNCs in the presence of an externally applied magnetic field, via the inversely proportional relationship between the resonance frequency and the product of relative permittivity (εr) and permeability (μr). As the frequency is swept, εr of a dielectric material changes and as the magnetic field is swept, μr of a magnetic material changes.
“Fabrication and Study of Static and Dynamic Characteristics of Metal-Ferroelectric-Metal Nanoscale Film Capacitor Structures”
HOVHANDA DASHTOYAN
(National Polytechnic University of Armenia)
In order to meet the strict requirements of modern information systems materials and structures with new and improved features are needed. In this regard the structures based on ferroelectrics (FEs) have a great potential. Interest in FE thin films has been considerable over the last 20 years, driven by the possibility of using them for non-volatile memory applications and new microelectromechanical systems (MEMS), FE FETs, photosensitive bio-medical sensors, solid-oxide fuel cell (SOFC) electrodes, voltage-tunable capacitors, microwave electronic components, Film Bulk Acoustic Wave Resonators [1-3], etc. We have already investigated methods of fabrication of FE based (Ba0.25Sr0.75TiO3, Ba0.31Sr0.69TiO3, ZnO) nanoscale film capacitor structures [4, 5], their dark and photo J(V), I(V) characteristics, charge transport and conduction mechanisms in FE thin films, etc. in the framework of my PhD thesis. In the framework of ERASMUS MUNDUS BACKIS grant program at the UPV/EHU it is planned to fabricate diverse FE based thin film capacitor structures (mainly metal-ferroelectric-metal) and develop the efficient technologies of fabrication, experimentally investigate different static and dynamic characteristics of fabricated structures and compare these results with the theory already developed by our research group in the framework of my PhD thesis.Related news
Track the Twin: Digital Twins to Improve Quantum Dots
The Marie Curie doctoral network "Track the Twin," in which BCMaterials is participating, is already underway. This project aims to enhance the long-term performance of quantum dots through the…Meeting of the new BCMaterials Board of Trustees
On April 1st, BCMaterials facilities held the center’s new Board of Trustees meeting. The Board reviewed BCMaterials overall situation and examined the results and activities reported in the 2024…Maibelin Rosales, in the Periodic Table of Chilean Female Scientists
We would like to congratulate our Marie Curie postdoctoral researcher, Maibelin Rosales, for being selected as one of the 118 researchers recognized in the Periodic Table of Chilean Female Scientists…Esraa Sewlam and Lía Campos, New Doctors of BCMaterials
We would like to extend our sincere congratulations to pre-doctoral researchers Esraa Sewlam and Lía Campos Arias for obtaining their PhDs in Materials Science and Technology from the UPV/EHU.…