A5059728804- Microstructure and mechanical properties
- Laser Material Processing Techniques
- Ion-surface interactions and analysis
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Seismology and Earthquake Studies
- Fusion materials and technologies
- Force Microscopy Techniques and Applications
- Earthquake Detection and Analysis
- Supercapacitor Materials and Fabrication
- Metal Forming Simulation Techniques
- Advanced Surface Polishing Techniques
- Ocular and Laser Science Research
- Landslides and related hazards
Eötvös Loránd University
2022-2023
Plastic deformation of microsamples is characterised by large intermittent strain bursts caused dislocation avalanches. Here we investigate how ion irradiation affects this phenomenon during single slip crystal plasticity. To end, in situ compression Zn micropillars oriented for basal was carried out a scanning electron microscope (SEM). The unique experimental setup also allowed the concurrent recording acoustic emission (AE) signals emitted from sample deformation. It shown that introduced...
In this work, a comprehensive investigation of amorphous and crystalline modification identical electrode active material as thin-film for future all-solid-state Li-ion battery application is presented discussed. Using the proposed micro-battery system, we aim to unravel effect crystallinity positive on intrinsic durability batteries during prolonged electrochemical cycling. We demonstrate preparation, structural-, nanomechanical characteristics molybdenum (VI) oxide (MoO3) cathodes based...
Universalities and intriguing analogies in the statistics of avalanches are revealed for three physical systems defined on largely different length energy scales. Earthquakes induced by tectonic scale dynamics, micro-scale level quakes observed from slipping crystallographic planes metals a one-dimensional, room-scale spring-block type Burridge-Knopoff model is studied similar statistical viewpoints. The validity Gutenberg-Richter law probability density energies dissipated proven all...
The dislocation microstructure developing during plastic deformation strongly influences the stress-strain properties of crystalline materials. Resent theoretical investigations based on 2D continuum theory straight parallel edge dislocations were able to predict a periodic microstructure. results obtained, however, can only be considered as very first step toward understanding origin patterning. One most challenging problems is modeling formation fractal like So, it crucial determine...
Abstract Ablation with ultrashort laser pulses as a surface micromachining tool was studied using hybrid die-excimer system that has high energy per pulse (tens of mJ’s), about 600 fs duration and low repetition rate (2 Hz). The effect ablation on the material microstructure this pulsed studied. Micropillars were fabricated by spot size hundreds micrometers. Two methods tested for micromachining. Multiple standing sample resulted in columnar microscturcure around micropillars. This unwanted...