Publication
Slip in directionally solidified Mo-alloy micropillars-Part II: Pillars containing defects
Publications associées (33)
EBSD study of variant reorientation, texture, and twin formation in a martensitic NiTi alloy deformed in compression
Roland Logé, Cyril Cayron, Mathijs Pieter van der Meer, Junfeng Xiao
Martensitic crystallography plays a vital role in the texture evolution and mechanical properties in Nickel-Titanium (NiTi) shape memory alloys when subjected to deformation. However, their microstructural changes during deformation are not well known and ...
Oxford2023PUS3-related disorder: Report of a novel patient and delineation of the phenotypic spectrum
PUS3 encodes the pseudouridylate synthase 3, an enzyme catalyzing the formation of tRNA pseudouridine, which plays a critical role in tRNA structure, function, and stability. Biallelic pathogenic variants of PUS3 have been previously associated with severe ...
WILEY2021Refinement for single-nanoparticle structure determination from low-quality single-shot coherent diffraction data
Christoph Bostedt, Christophe Nicolas
With the emergence of X-ray free-electron lasers, it is possible to investigate the structure of nanoscale samples by employing coherent diffractive imaging in the X-ray spectral regime. In this work, we developed a refinement method for structure reconstr ...
INT UNION CRYSTALLOGRAPHY2020Crystal Orientation and Grain Size: Do They Determine Optoelectronic Properties of MAPbI(3) Perovskite?
Sandy Sanchez Alonso, Ulf Anders Hagfeldt, Michael Saliba
Growing large, oriented grains of perovskite often leads to efficient devices, but it is unclear if properties of the grains are responsible for the efficiency. Domains observed in SEM are commonly misidentified with crystallographic grains, but SEM images ...
2019Monitoring Spontaneous Charge-Density Fluctuations by Single-Molecule Diffraction of Quantum Light
Homodyne X-ray diffraction signals produced by classical light and classical detectors are given by the modulus square of the charge density in momentum space vertical bar sigma(q)vertical bar(2), missing its phase, which is required in order to invert the ...
2019Template-assisted grown III-V semiconductor nanowires: A transmission electron microscopy study
III-V semiconductor nanowires are, due to their unique properties, one of the most promising nanostructures developed in the last decades. However, the realization of commercial devices made of III-V nanowires, such as transistors and solar cells, has not ...
EPFL2019Oxygen defects in GaAs: A hybrid functional study
Alfredo Pasquarello, Davide Colleoni
Using hybrid density functional calculations, we address the structural properties, formation energies, and charge transition levels of a variety of oxygen defects in GaAs. The set of considered defects comprises the bridging O atom in a As-O-Ga configurat ...
Amer Physical Soc2016Oxygen defects in amorphous Al2O3: A hybrid functional study
Alfredo Pasquarello, Francesco Ambrosio, Zhendong Guo
The electronic properties of the oxygen vacancy and interstitial in amorphous Al2O3 are studied via ab initio molecular dynamics simulations and hybrid functional calculations. Our results indicate that these defects do not occur in amorphous Al2O3, due to ...
American Institute of Physics2016Origin of Fermi-level pinning at GaAs/oxide interfaces through the hybrid functional study of defects
Gallium arsenide is currently under scrutiny for replacing silicon in microelectronic devices due to its high carrier mobilities. However, the widespread use of this semiconductor is hampered by the intrinsic difficulty of producing high-quality interfaces ...
EPFL2015Energy-selective neutron imaging for materials science
Common neutron imaging techniques study the attenuation of a neutron beam penetrating a sample of interest. The recorded radiograph shows a contrast depending on traversed material and its thickness. Tomography allows separating both and obtaining 3D spati ...
EPFL2015