30 citations · 107 across the 19 of their papers we have counts for
20 papers
Shot Noise Reduction in Radiographic and Tomographic Multi-Channel Imaging with Self-Supervised Deep Learning
Yaroslav Zharov, Evelina Ametova, Rebecca Spiecker +3
Noise is an important issue for radiographic and tomographic imaging techniques. It becomes particularly critical in applications where additional constraints force a strong reduct…
Optimizing the Procedure of CT Segmentation Labeling
Yaroslav Zharov, Tilo Baumbach, Vincent Heuveline
In Computed Tomography, machine learning is often used for automated data processing. However, increasing model complexity is accompanied by increasingly large volume datasets, whi…
A Knowledge Distillation framework for Multi-Organ Segmentation of Medaka Fish in Tomographic Image
Jwalin Bhatt, Yaroslav Zharov, Sungho Suh +3
Morphological atlases are an important tool in organismal studies, and modern high-throughput Computed Tomography (CT) facilities can produce hundreds of full-body high-resolution…
Using the Order of Tomographic Slices as a Prior for Neural Networks Pre-Training
Yaroslav Zharov, Alexey Ershov, Tilo Baumbach +1
The technical advances in Computed Tomography (CT) allow to obtain immense amounts of 3D data. For such datasets it is very costly and time-consuming to obtain the accurate 3D segm…
Exploiting of flux shadowing effect on InGaAs asymmetric shell growth for strain and bending engineering in GaAs - InGaAs core - shell NW arrays
Mahmoud Al Humaidi, Julian Jakob, Ali Al Hassan +8
Here we report on non-uniform shell growth of In(x)Ga(1-x)As onto GaAs nanowire (NW) core by molecular beam epitaxy (MBE). The growth was realized on pre-patterned silicon substrat…
In-situ X-ray analysis of misfit strain and curvature of bent polytypic GaAs-In(x)Ga(1-x)As core-shell nanowires
Mahmoud Al-Humaidi, Ludwig Feigl, Julian Jakob +9
Misfit strain in core-shell nanowires can be elastically released by nanowire bending in case of asymmetric shell growth around the nanowire core. In this work, we investigate the…
Self-Supervised Learning for Biological Sample Localization in 3D Tomographic Images
Yaroslav Zharov, Alexey Ershov, Tilo Baumbach +1
In synchrotron-based Computed Tomography (CT) there is a trade-off between spatial resolution, field of view and speed of positioning and alignment of samples. The problem is even…
Lattice dynamics of endotaxial silicide nanowires
J. Kalt, M. Sternik, B. Krause +17
Self-organized silicide nanowires are considered as main building blocks of future nanoelectronics and have been intensively investigated. In nanostructures, the lattice vibrationa…
Lattice dynamics and polarization-dependent phonon damping in -phase FeSi nanoislands
J. Kalt, M. Sternik, B. Krause +16
We determined the lattice dynamics of metastable, surface-stabilized -phase FeSi nanoislands epitaxially grown on the Si(111) surface with average heights and widths ranging…
Megahertz X-ray microscopy at X-ray Free-Electron Laser and Synchrotron sources
Patrik Vagovič, Tokushi Sato, Ladislav Mikeš +17
We demonstrate X-ray phase contrast microscopy performed at the European X-ray Free-Electron Laser sampled at 1.128 MHz rate. We have applied this method to image stochastic proces…
Ab initio and nuclear inelastic scattering studies of FeSi/GaAs heterostructures
O. Sikora, J. Kalt, M. Sternik +11
The structure and dynamical properties of the FeSi/GaAs(001) interface are investigated by density functional theory and nuclear inelastic scattering measurements. The stabilit…
A Shack-Hartmann sensor for single-shot multi-contrast imaging with hard X-rays
Tomy dos Santos Rolo, Stefan Reich, Dmitry Karpov +5
An array of compound refractive X-ray lenses (CRL) with 20x20 lenslets, a focal distance of 20 cm and a visibility of 0.93 is presented. It can be used as a Shack-Hartmann sensor f…
A portable MBE system for in situ X-Ray investigations at synchrotron beamlines
T. Slobodskyy, P. Schroth, D. Grigoriev +4
A portable synchrotron MBE system is designed and applied for in situ investigations. The growth chamber is equipped with all the standard MBE components such as effusion cells wit…
Improved success rate and stability for phase retrieval by including randomized overrelaxation in the hybrid input output algorithm
Martin Köhl, A. A. Minkevich, Tilo Baumbach
In this paper, we study the success rate of the reconstruction of objects of finite extent given the magnitude of its Fourier transform and its geometrical shape. We demonstrate th…
Charge-density waves in deconfining SU(2) Yang-Mills thermodynamics
Carlos Falquez, Ralf Hofmann, Tilo Baumbach
At one-loop accuracy we compute, characterize, and discuss the dispersion laws for the three low-momentum branches of propagating longitudinal, electric U(1) fields in the effectiv…
Synthesis of nanocrystalline titanium nitride coatings from the plasma of a composite-cathode arc discharge
Yu. F. Ivanov, N. N. Koval, O. V. Krysina +7
Experimental data are given on the structure and properties of nanocrystalline hardening coatings of titanium nitride doped with copper, produced by plasma-assisted vacuum arc depo…
In-depth analysis of CIGS film for solar cells, structural and optical characterization
A. Slobodskyy, T. Slobodskyy, T. Ulyanenkova +4
Space-resolved X-ray diffraction measurements performed on gradient-etched CuInGaSe2 (CIGS) solar cells provide information about stress and texture depth profiles in the absorber…
Improved ground-state estimate by thermal resummation
Carlos Falquez, Ralf Hofmann, Tilo Baumbach
For the deconfining phase of SU(2) Yang-Mills thermodynamics and for high temperatures we point out that a linear dependence on temperature of a one-loop selfconsistently resummed…
Modification of black-body radiance at low temperatures and frequencies
Carlos Falquez, Ralf Hofmann, Tilo Baumbach
In contrast to earlier reports, where the spectrum of the {\sl energy density} of photonic black-body radiation modified by SU(2) effects was discussed, we discuss the low-frequenc…
Status of COLDDIAG: A Cold Vacuum Chamber for Diagnostics
S. Gerstl, T. Baumbach, S. Casalbuoni +19
One of the still open issues for the development of superconducting insertion devices is the understanding of the beam heat load. With the aim of measuring the beam heat load to a…