A5080986608- Magnetic properties of thin films
- Structural Health Monitoring Techniques
- Advanced Memory and Neural Computing
- Ultrasonics and Acoustic Wave Propagation
- Physics of Superconductivity and Magnetism
- Advanced MEMS and NEMS Technologies
- Mechanical and Optical Resonators
- Acoustic Wave Resonator Technologies
- Acoustic Wave Phenomena Research
- Quantum and electron transport phenomena
- Semiconductor materials and devices
- Ferroelectric and Negative Capacitance Devices
- Geophysical Methods and Applications
- Vibration Control and Rheological Fluids
- Brake Systems and Friction Analysis
- Advancements in Semiconductor Devices and Circuit Design
- Mechanical Behavior of Composites
- Non-Destructive Testing Techniques
- Magneto-Optical Properties and Applications
- Metamaterials and Metasurfaces Applications
- Theoretical and Computational Physics
- Structural Load-Bearing Analysis
- Silicon Carbide Semiconductor Technologies
- Railway Engineering and Dynamics
- Thermography and Photoacoustic Techniques
University of Messina
2014-2023
University of Catania
2002
This Letter introduces a seismic metamaterial (SM) composed by chain of mass-in-mass system able to filter the S-waves an earthquake. We included effect SM into mono dimensional model for soil response analysis. The modifies behavior and in presence internal damping amplitude amplification function is reduced also region near resonance frequency. can be realized continuous structure with inside 3d-matrix isochronous oscillators based on sphere rolling over cycloidal trajectory.
Metamaterials can be engineered to interact with waves in entirely new ways, finding application on the nanoscale various fields such as optics and acoustics. In addition, acoustic metamaterials used large-scale experiments for filtering manipulating seismic (seismic metamaterials). Here, we propose isolation based a device that combines some properties of (e.g., periodic mass-in-mass systems) standard foundation positioned right below building purposes. The concepts which this solution is...
Microwave detection has a huge number of applications in physics and engineering. It already been shown that biased spin torque diodes have performance overcoming the CMOS counterpart terms sensitivity. In this regard, are promising candidates for next generation microwave detectors. Here, we show optimization rectification process based on injection locking mechanism gives an ultrahigh sensitivity exceeding 200 kV/W with output resistance below 1 kΩ while maintaining advantages over other...
Abstract There is accelerating interest in developing memory devices using antiferromagnetic (AFM) materials, motivated by the possibility for electrically controlling AFM order via spin-orbit torques, and its read-out magnetoresistive effects. Recent studies have shown, however, that high current densities create non-magnetic contributions to resistive switching signals AFM/heavy metal (AFM/HM) bilayers, complicating their interpretation. Here we introduce an experimental protocol...
In modern building infrastructures, the chance to devise adaptive and unsupervised data-driven structural health monitoring (SHM) systems is gaining in popularity. This due large availability of big data from low-cost sensors with communication capabilities advanced modeling tools such as deep learning. A promising method suitable for smart SHM analysis acoustic emissions (AEs), i.e., ultrasonic waves generated by internal ruptures concrete when it stressed. The advantage respect traditional...
Abstract Current-driven magnetic skyrmions show promise as carriers of information bits in racetrack memory applications. Specifically, the utilization synthetic antiferromagnetic (SAF) systems is highly attractive due to potential suppress Skyrmion Hall effect, which causes a transverse displacement driven relative shift direction. In this study, we demonstrate, through analytical calculations and micromagnetic simulations, that case nanoring geometry, current-driven achieve stable circular...
Periodic or quasi-periodic arrangements of artificial structures can be used to design a class materials, i.e., metamaterials, with intriguing properties. Recently, it has been proposed use periodic systems internal resonances for the attenuation acoustic/seismic waves. However, large input displacements due seismic waves drive working point these in nonlinear regime. Here, we have studied dynamics chain mass-in-mass systems, which model composite foundations, where external spring is...
Voltage-controlled magnetic anisotropy (VCMA) is a low-energy alternative to manipulate the ferromagnetic state, which has been recently also considered in antiferromagnets (AFMs). Here, we theoretically demonstrate that VCMA can be used excite linear and parametric resonant modes easy-axis AFMs with perpendicular anisotropy, thus opening way for an efficient electrical control of N\'eel vector detection high-frequency dynamics. Our work leads two key results: (i) pumping experiences...
A strategy for a scalable synchronization of an array spin-Hall oscillators (SHOs) is illustrated. In detail, we present the micromagnetic simulations two and five SHOs realized by means couples triangular golden contacts on top Pt/CoFeB/Ta trilayer. The results highlight that occurs whole current region gives rise to excitation self-oscillations. This linked role magnetodipolar coupling, which phenomenon driving when distance between not too large. Synchronization also turns out be robust...
The recent technological realization of perpendicular magnetic tunnel junctions (MTJs) with two reference layers has opened a new route for scaling the overall size spin-transfer torque random-access memory. This is because, an antiparallel configuration magnetization layers, torques add constructively, giving rise to more efficient switching processes free layer as compared single MTJ. We use full micromagnetic simulations study double probability distribution function (PDF) time same both...
Power SiC MOSFETs are going to substitute Si devices by their significantly better performances that make them much suitable in power switching applications such as electric/hybrid vehicles. The increasingly use of these critical mission profiles requires an ever-higher reliability, whereas the increase dissipated during high-speed working cycling due short current pulses leads unavoidable thermal and mechanical stress. Here, we propose a direct method evaluate stress pulses. This highlights...
Antiferromagnetic spintronics is a promising emerging paradigm to develop high-performance computing and communications devices. materials are more abundant than ferromagnets; hence, from theoretical point of view, it important implement simulation tools that can support data-driven development having specific properties for applications. Here, we present study focusing on the fundamental antiferromagnetic an easy-plane anisotropy interfacial Dzyaloshinskii-Moriya interaction (IDMI). An...
The reliability characterization is a milestone for the design of semiconductor power devices operating in those applications where high robustness critical point, as case automotive field. In order to realize model that can describe degradation devices, due cyclic thermo-mechanical stress, Coffin-Manson equation widely applied. Generally speaking relationship shows correlation between fatigue life and plastic strain but this often customized correlate with temperature variations, being...