A5089964038- Parallel Computing and Optimization Techniques
- Ferroelectric and Piezoelectric Materials
- Embedded Systems Design Techniques
- Computational Physics and Python Applications
- Solar and Space Plasma Dynamics
- Solar Radiation and Photovoltaics
- Distributed and Parallel Computing Systems
- Microwave Dielectric Ceramics Synthesis
- Bat Biology and Ecology Studies
- Vehicle emissions and performance
- Geomagnetism and Paleomagnetism Studies
- Magnetic and transport properties of perovskites and related materials
- Yersinia bacterium, plague, ectoparasites research
- Interconnection Networks and Systems
- Nuclear materials and radiation effects
- Electrowetting and Microfluidic Technologies
- Organic Electronics and Photovoltaics
- Multiferroics and related materials
- Perovskite Materials and Applications
- Advanced Combustion Engine Technologies
- Animal Vocal Communication and Behavior
- Crystallization and Solubility Studies
- Advanced Data Storage Technologies
- Luminescence and Fluorescent Materials
- Hydrological Forecasting Using AI
Materials Center Leoben (Austria)
2020-2024
Friedrich-Alexander-Universität Erlangen-Nürnberg
2001-2023
Mahle (Germany)
2023
TU Wien
2015-2022
Graz University of Technology
2019
Universidad Nacional de Córdoba
2004
This paper presents SunPy (version 0.5), a community-developed Python package for solar physics. Python, free, cross-platform, general-purpose, high-level programming language, has seen widespread adoption among the scientific community, resulting in availability of large number software packages, from numerical computation (NumPy, SciPy) and machine learning (scikit-learn) to visualisation plotting (matplotlib). is data-analysis environment specialising providing necessary analyse...
It is well known that disordered relaxor ferroelectrics exhibit local polar correlations. The origin of localized fields disrupt long range order for different substitution types, however, unclear. Currently, it substituents the same valence as Ti4+ at B-site barium titanate lattice produce random disruption Ti-O-Ti chains induces behavior. On other hand, investigating and behavior resulting from more complex due to simultaneous occurrence charge imbalances displacements substituent cation....
The analysis of echolocation calls and mitochondrial DNA sequences recently revealed the existence two cryptic bat species in Western Europe which were regarded as «Pipistrellus pipistrellus» for more than 200 years. We now present data on acoustic genetic characters across including a novel marker from nuclear genome. Intraspecific variation end frequencies did not differ between geographic regions only little overlap existed species. Nuclear highly divergent. No evidence was found...
Field-programmable gate arrays (FPGAs) are of great interest for future high-performance computing and data analytics systems, since they capable efficient, highly-parallel processing. Even though high-level synthesis became more popular in the last years, effort porting existing scientific software onto FPGAs is still considerable. We propose to use OpenMP target offloading as a solution, which we implement first prototype, making preexisting OpenCL SDK FPGA vendor. Early results...
The analysis of echolocation calls and mitochondrial DNA sequences recently revealed the existence two cryptic bat species in Western Europe which were regarded as «Pipistrellus pipistrellus» for more than 200 years. We now present data on acoustic genetic characters across including a novel marker from nuclear genome. Intraspecific variation end frequencies did not differ between geographic regions only little overlap existed species. Nuclear highly divergent. No evidence was found...
It is well known that to accelerate stencil codes on CPUs or GPUs and exploit hardware caches their lines optimizers must find spatial temporal locality of array accesses harvest data-reuse opportunities. On FPGAs there the burden are no built-in (or only pre-built descriptions for cache blocks inefficient codes). But this paper demonstrates lack also a chance as polyhedral methods can be used generate stencil-specific cache-structures right sizes FPGA fill flush them efficiently with wide...
Abstract In the present article, an evaluation of different approaches for estimating electronic coupling and charge‐transport parameters in organic semiconductors is provided. As a testbed that comparison, α‐polymorph quinacridone chosen. This system particularly well suited purpose, as α‐quinacridone intermolecular interactions distinct crystallographic directions are dominated by three mechanisms most relevant semiconductors: π‐stacking, H‐bonding, van der Waals stacking....
Barium titanate (BT) based materials are at the forefront of being searched as possible candidates for replacement lead-based compositions in applications ranging from piezoelectrics to energy storage devices. Computational methods very promising increase efficiency discovery, provided that finite temperature properties can be realistically computed using, example, molecular dynamics (MD). In this work, we present a systematic quality MD simulations via an alternative way calculate...
A crucial factor determining charge transport in organic semiconductors is the electronic coupling between molecular constituents, which heavily influenced by relative arrangement of molecules. This renders quinacridone, with its multiple, structurally fundamentally different polymorphs and their diverse intermolecular interactions an ideal test case for analyzing correlation a specific configuration configuration's energetic stability. To provide in-depth analysis this correlation, starting...
Ferroelectric materials can exhibit metastable phases when exposed to THz pulses, characterized by a polarization integration capability related the amplitude and frequency of pulses. These so-called ``hidden'' enable gradual switching that be utilized in artificial synapses for nonconventional (neuromorphic) computing machines. In this work, we employ large-scale molecular-dynamics simulation based on an effective Hamiltonian approach, report discovery hidden Zr- Nb-doped barium titanate...
SunPy is a data analysis toolkit which provides the necessary software for analyzing solar and heliospheric datasets in Python. aims to provide free open-source alternative current standard, an IDL- based environment known as SolarSoft (SSW). We present latest release of SunPy, version 0.3. Though still active development, already important functionality analysis. structures representing most common types: images, lightcurves, spectra. To enable acquisition scientific data, integration with...
The conformational properties and geometric structures of fluoroformic acid anhydride, FC(O)OC(O)F, have been studied by vibrational spectroscopy, gas electron diffraction (GED), single-crystal X-ray diffraction, quantum chemical calculations (HF, MP2, B3LYP methods with 6-31G* B3LYP/6-311+G* basis sets). Satellite bands in the IR matrix spectra, which increase intensity when mixture is heated prior to deposition as a matrix, indicate presence two conformers at room temperature. According...
Barium titanate (BT) solid solutions are used in a wide range of applications such as piezoelectric actuators and high-performance energy storage devices. The key to achieve tune desired macroscopic properties is the chemical modification, which done by substituting Ba or Ti with other homovalent heterovalent cations. This work uses large-scale molecular dynamics simulations based on an effective Hamiltonian approach calculate BT from first principles, thereby offering framework for...
Antiskyrmions, as topological quasi-particles, hold significant promise for spintronics and nanoscale data storage applications. Using molecular dynamics simulations based on effective Hamiltonians, we investigate the thermal stability of antiskyrmion nanodomains in rhombohedral barium titanate. At 1 K, antiskyrmions with a charge -2 emerge most stable nanodomain state across all examined diameters. In our systematic study, robust was found to have diameter 4 nm, maintaining its original...