Article
Instruments & Instrumentation
Philipp Brumund, Juan Reyes-Herrera, Carsten Detlefs, Christian Morawe, Manuel Sanchez del Rio, Aleksandr Chumakov
Summary: The study analyzed the performance of a liquid-nitrogen-cooled high-heat-load monochromator with a horizontal scattering plane, showing that with increasing heat load, the slope errors of the crystal surface reach their smallest values first in the sagittal and then in the meridional plane. The horizontal-scattering high-heat-load monochromator effectively preserves the high quality of the X-ray beam in the vertical plane.
JOURNAL OF SYNCHROTRON RADIATION
(2021)
Article
Instruments & Instrumentation
Philipp Brumund, Juan Reyes-Herrera, Christian Morawe, Thomas Dufrane, Helena Isern, Thierry Brochard, Manuel Sanchez del Rio, Carsten Detlefs
Summary: Finite-element analysis is used to study the thermal deformation of a multilayer mirror due to the heat load from the undulator beam. The geometry of the multilayer substrate is optimized to minimize thermally induced slope errors. Tuning thermal bending and geometry has little effect on the residual slope errors.
JOURNAL OF SYNCHROTRON RADIATION
(2021)
Article
Optics
Chuan Yang, Tao Liu, Kai Hu, Ye Zhu, Xiaohao Dong, Zhongmin Xu, Chao Feng, Weiqing Zhang
Summary: This study presents a model to estimate the performance of non-uniform thermally distorted crystals in high-brightness X-ray free electron lasers (XFELs). The model takes into account thermal strain, slope error, incident angle deviation, as well as temperature-dependent factors such as the Debye-Waller factor and electric susceptibility. The investigation shows that the Debye-Waller factor reduces the height and bandwidth of rocking curves, while the impact of the electric susceptibility is minimal. The proposed model can be applied in the design of crystal monochromators, crystal splitters, crystal compressors, and XFELOs.
HIGH POWER LASER SCIENCE AND ENGINEERING
(2023)
Article
Thermodynamics
Jiameng Tian, Bufa Li, Junfeng Wang, Bin Chen, Zhifu Zhou, Hai Wang
Summary: This work conducted an experimental investigation on transient cooling performance using a single-pulsed flash-evaporation spray, providing further insight into phase-change heat transfer on the hot surface. Factors such as the nozzle-to-surface distance and nozzle orifice diameter were found to affect the cooling effect.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Physics, Multidisciplinary
B. Marx-Glowna, B. Grabiger, R. Loetzsch, I Uschmann, A. T. Schmitt, K. S. Schulze, A. Last, T. Roth, S. Antipov, H-P Schlenvoigt, I Sergueev, O. Leupold, R. Roehlsberger, G. G. Paulus
Summary: We report on the realization of an extremely sensitive x-ray polarization microscope, capable of detecting tiny polarization changes of 1 in 100 billion, using a micron-sized focused beam. The method also meets the stringent requirements for polarization purity and lens quality, opening up new possibilities for research in various fields.
NEW JOURNAL OF PHYSICS
(2022)
Article
Thermodynamics
Haishan Cao, Biqiang Liu, Lingxiao Qin
Summary: This review presents the basic principle, developments, and performance improvement measures of sorption cryocoolers. Different adsorbents can achieve cooling at various temperatures, but the efficiency of sorption cryocoolers is currently lower than mechanical cryocoolers. Further research is needed to develop more efficient sorbents and optimize the compression cycle and key components.
APPLIED THERMAL ENGINEERING
(2022)
Article
Engineering, Manufacturing
J. Pernas-Sanchez, S. M. Garcia-Rodriguez, J. A. Artero-Guerrero, J. Lopez-Puente, J. Costa
Summary: This study investigates the behavior of carbon-epoxy laminates under high velocity impacts at room and cryogenic temperatures. The damage pattern of impacted specimens at low temperature exhibits a higher density of fiber breaks and shear matrix cracks, but does not result in a larger projected damaged area. Experimental analysis and calculations exclude the association of this particular pattern to temperature-induced damage mechanisms.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Chemistry, Physical
Charlene Delacotte, Tatiana A. Pomelova, Thomas Stephant, Thierry Guizouarn, Stephane Cordier, Nikolay G. Naumov, Pierric Lemoine
Summary: This study reports on the magnetocaloric properties of the AGdS(2) family and finds that NaGdS2 exhibits the best performance. The layered structure of NaGdS2 significantly improves the magnetocaloric properties compared to LiGdS2. These magnetocaloric figures of merit highlight the promising potential of Gd-based sulfides as magnetic refrigeration materials.
CHEMISTRY OF MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Umut T. Sanli, Tobias Messer, Markus Weigand, Lars Lotgering, Gisela Schutz, Martin Wegener, Christian Kern, Kahraman Keskinbora
Summary: This study successfully fabricated X-ray optics with higher resolution using a custom-built 3D laser lithography system and verified it through microscopy imaging. This is of significant importance for high-resolution X-ray microscopy and has the potential to reduce the manufacturing cost of X-ray lenses.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Physical
Iuliia Baranova, Angelina Angelova, William E. Shepard, Jakob Andreasson, Borislav Angelov
Summary: Time-resolved structural investigations of water crystallization in lipid/protein/salt mesophases at cryogenic temperatures are important for understanding ice nanocrystal nucleation kinetics in lipid membranous systems and finding ways to retard ice formation that impairs protein crystal structure determination. A time-resolved synchrotron microfocus X-ray diffraction study revealed the dynamics of water-to-ice crystallization in a lipid/protein/salt mesophase subjected to cryostream cooling. The detection of early nanocrystalline states of water-to-ice transformation in multicomponent systems has implications for various technologies and natural phenomena.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Optics
Mikhail Lyubomirskiy, Bart Schurink, Igor A. Makhotkin, Dennis Brueckner, Felix Wittwer, Maik Kahnt, Martin Seyrich, Frank Seiboth, Fred Bijkerk, Christian G. Schroer
Summary: Manufacturing and testing of the first nanofocusing refractive lenses made of single-crystal silicon carbide have been reported, achieving a focal spot size of 186 nmx275 nm at 12 keV energy. The lenses were fabricated using lithography and deep isotropic etching technology, and published by The Optical Society under the Creative Commons Attribution 4.0 License.
Article
Engineering, Multidisciplinary
R. R. Geraldes, G. Witvoet, J. P. M. B. Vermeulen
Summary: The High-Dynamic Double-Crystal Monochromator (HD-DCM) is an innovative instrument that has been developed for X-ray beamlines. It features a unique architecture that incorporates isolated mechatronic design and predictive engineering, resulting in significantly improved positioning performance and beam stability. This paper provides a detailed overview of its mechanical design and the strategies used to achieve such performance.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Hirokatsu Yumoto, Takahisa Koyama, Akihiro Suzuki, Yasumasa Joti, Yoshiya Niida, Kensuke Tono, Yoshitaka Bessho, Makina Yabashi, Yoshinori Nishino, Haruhiko Ohashi
Summary: Researchers have achieved high resolution focusing and single-particle imaging of non-crystalline objects using precise multilayer mirrors. This technique provides higher fluence and unprecedented 2-nanometer resolution, enabling the exploration of the relationship between dynamic structures and functions of native biomolecular complexes.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Multidisciplinary
R. R. Geraldes, M. A. L. Moraes, G. Witvoet, J. P. M. B. Vermeulen
Summary: This study addresses the nanometer-level requirements in positioning stability by introducing the High-Dynamic Double-Crystal Monochromator (HD-DCM), which has an innovative isolated mechatronic architecture and utilizes the Dynamic Error Budgeting (DEB) methodology. The research successfully demonstrates the predictive modeling process of the HD-DCM and compares it with experimental results, highlighting its significance in the field of synchrotron beamline instrumentation.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2022)
Article
Chemistry, Analytical
A. Scordo, V De Leo, C. Curceanu, M. Miliucci, F. Sirghi
Summary: This paper reports the reflection efficiency measurements of the VOXES Von Hamos spectrometer based on HAPG mosaic crystals and ray tracing simulation results. The results indicate the potential application value of the VH spectrometer in the field of Bragg spectrometers.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Chemistry, Physical
Nataliya Chistyakova, Angelina Antonova, Ivan Elizarov, Pavel Fabritchnyi, Mikhail Afanasov, Mikhail Korolenko, Maria Gracheva, Diana Pchelina, Ilya Sergueev, Olaf Leupold, Rene Steinbruegge, Sergey Gavrilov, Ilya Kublanov, Vyacheslav Rusakov
Summary: The redox transformations of mixed-valence antimony oxide were studied using Mossbauer spectroscopy, nuclear forward scattering, and Raman spectroscopy, revealing a minor decrease in antimony(V) content with a concomitant increase in antimony(III) under the culture of a hyperthermophilic archaeon of the genus Pyrobaculum. The sensitivities of the methods for quantitatively assessing the Sb(III/V) ratio have been considered.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Physical
Ketan Lohani, Himanshu Nautiyal, Narges Ataollahi, Carlo Fanciulli, Ilya Sergueev, Martin Etter, Paolo Scardi
Summary: This study found that the disordered Cu2SnS3 has a lower thermal conductivity and a higher power factor compared to the ordered phase, resulting in a higher figure of merit at high temperatures. The structural disorder plays a key role in suppressing the thermal conductivity and enhancing the thermoelectric performance of Cu2SnS3.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Instruments & Instrumentation
Sergey Shevyrtalov, Alexander Barannikov, Yurii Palyanov, Alexander Khokhryakov, Yurii Borzdov, Ilya Sergueev, Sergey Rashchenko, Anatoly Snigirev
Summary: This manuscript reports the characterization of single-crystalline (111) plates prepared from type-Ib diamonds with a nitrogen content of 100-150 ppm using high-resolution rocking-curve imaging (RCI). Contrary to common opinions about the poor diffraction quality of type-I diamonds, nearly defect-free areas of several millimetres squared were observed in the central part of the diamond plates. The observed broadening of the rocking curves is a result of cutting and polishing processes, causing strains around the edges of the plates and rare defects.
JOURNAL OF SYNCHROTRON RADIATION
(2021)
Correction
Chemistry, Physical
Ketan Lohani, Himanshu Nautiyal, Narges Ataollahi, Carlo Fanciulli, Ilya Sergueev, Martin Etter, Paolo Scardi
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Physics, Multidisciplinary
Georg Spiekermann, Lelia Libon, Christian Albers, Robin Sakrowski, Sylvain Petitgirard, Christoph J. Sahle, Martin Sundermann, Hlynur Gretarsson, Ilya Sergueev, Christian Sternemann, Max Wilke, Motohiko Murakami
Summary: This study demonstrates the effectiveness of using a silver-coated 90 degrees parabolic mirror for imaging, on-axis laser heating, and temperature measurements without chromatic aberration in a laser heating system. The mirror, also perforated with a 220-mu m hole, is suitable for on-axis imaging, laser heating, and X-ray incidence simultaneously at synchrotron facilities, serving as a promising alternative to existing objective lenses.
HIGH PRESSURE RESEARCH
(2021)
Article
Chemistry, Physical
Sakshath Sadashivaiah, Juliusz A. Wolny, Lena Scherthan, Kevin Jenni, Andreas Omlor, Christina S. Mueller, Ilya Sergueev, Marcus Herlitschke, Olaf Leupold, Hans-Christian Wille, Ralf Roehlsberger, Volker Schuenemann
Summary: Phonon modes play a crucial role in the light-induced spin transitions of spin crossover molecular complexes. A novel optical laser pump-nuclear resonance probe experiment was conducted to identify the Fe-projected vibrational density of states during the initial nanoseconds after laser excitation, revealing the transient inter- and intramolecular vibrational modes at nanosecond time scales during the phase transition.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Geosciences, Multidisciplinary
V Mergner, I Kupenko, G. Spiekermann, S. Petitgirard, L. Libon, S. Chariton, M. Krug, R. Steinbruegge, I Sergueev, C. Sanchez-Valle
Summary: Studies suggest that FeSi formed from core-mantle chemical reactions may be a plausible source of ultralow-velocity zones (ULVZs) at the core-mantle boundary (CMB). The low sound velocities of FeSi compared to other candidate phases in a lowermost mantle assemblage could explain the velocity decrements and high density anomalies observed in a wide range of ULVZs with less than 8.4 vol% of FeSi in the aggregate.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Physics, Applied
D. Bessas, H. Fukui, K. Sugimoto, K. Glazyrin, I. Sergueev, G. Levchenko, A. Dukhnenko, V. Filipov, O. Isnard, D. Ishikawa, H. Yoshikawa, O. Sakata, A. Q. R. Baron
Summary: YB66 was characterized using microscopic and macroscopic techniques, revealing its high potential for high-resolution X-ray monochromatization applications. The material exhibited a large unit cell and high thermal expansion coefficients, Debye temperature, elastic constants, and speed of sound. Challenges related to crystal quality and multi-beam cases were also mentioned for potential pitfalls in resonant inelastic X-ray scattering applications.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Instruments & Instrumentation
Joel Bertinshaw, Simon Mayer, Frank-Uwe Dill, Hakuto Suzuki, Olaf Leupold, Atefeh Jafari, Ilya Sergueev, Manfred Spiwek, Ayman Said, Elina Kasman, Xianrong Huang, Bernhard Keimer, Hlynur Gretarsson
Summary: The IRIXS Spectrograph is a new design of an ultra-high-resolution RIXS spectrometer operating at the Ru L-3-edge, utilizing novel optical techniques to achieve excellent energy resolution.
JOURNAL OF SYNCHROTRON RADIATION
(2021)
Article
Instruments & Instrumentation
Marina Andreeva, Alevtina Smekhova, Roman Baulin, Yurii Repchenko, Rantej Bali, Carolin Schmitz-Antoniak, Heiko Wende, Ilya Sergueev, Kai Schlage, Hans Christian Wille
Summary: The nuclear resonant reflectivity (NRR) was used to study the evolution of the ferromagnetic A2 phase in an Fe60Al40 film irradiated with Ne+ ions. The method showed depth selectivity and revealed the creation of magnetic hyperfine fields at specific depths within the film. Higher ion fluence resulted in a more homogeneous distribution of ferromagnetic fractions across the film depth.
JOURNAL OF SYNCHROTRON RADIATION
(2021)
Article
Physics, Multidisciplinary
B. Marx-Glowna, B. Grabiger, R. Loetzsch, I Uschmann, A. T. Schmitt, K. S. Schulze, A. Last, T. Roth, S. Antipov, H-P Schlenvoigt, I Sergueev, O. Leupold, R. Roehlsberger, G. G. Paulus
Summary: We report on the realization of an extremely sensitive x-ray polarization microscope, capable of detecting tiny polarization changes of 1 in 100 billion, using a micron-sized focused beam. The method also meets the stringent requirements for polarization purity and lens quality, opening up new possibilities for research in various fields.
NEW JOURNAL OF PHYSICS
(2022)
Letter
Multidisciplinary Sciences
Kilian P. Heeg, Lars Bocklage, Cornelius Strohm, Christian Ott, Dominik Lentrodt, Johann Haber, Hans-Christian Wille, Rudolf Rueffer, Jakob Gollwitzer, Christian F. Adolff, Kai Schlage, Ilya Sergeev, Olaf Leupold, Guido Meier, Christoph H. Keitel, Ralf Roehlsberger, Thomas Pfeifer, Joerg Evers
Article
Chemistry, Physical
Prabhat Kumar, O. Leupold, I. Sergueev, H. -c. Wille, Mukul Gupta
Summary: We studied the diffusion process during the growth of Fe1-xCx thin films and found that C occupies the grain boundary region and enhances Fe self-diffusion. With the increase of x, the Fe-C films exhibit martensite phase and amorphous phases. The obtained results provide important insights into the kinetics of Fe-C phase formation and the influence of C concentration on the structural and magnetic properties of Fe-C thin films.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Avinash Ganesh Khanderao, Sonia Kaushik, Arun Singh Dev, V. R. Reddy, Ilya Sergueev, Hans-Christian Wille, Pallavi Pandit, Stephan V. Roth, Dileep Kumar
Summary: This study investigates the behavior and properties of metal-organic interface magnetism, specifically the interface between Fe and the organic semiconductor film Alq(3). Experimental techniques such as GINRS and MOKE were used to study the topological structure and evolution of magnetism at the interface. The research provides insight into the interfacial magnetism at metal-organic interfaces and the difficulties in probing the diffused ferromagnetic layer using lab-based techniques.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Deepak Prajapat, Akash Surampalli, Anjali Panchwanee, Carlo Meneghini, Ilya Sergeev, Olaf Leupold, Srihari Velaga, Binoy Krishna de, Marco Merlini, Konstantin Glazyrin, Rene Steinbrugge, Atefeh Jafari, Himashu Kumar Poswal, V. G. Sathe, V. Raghavendra Reddy
Summary: We investigated the structural and magnetic properties of a four-layer Aurivillius compound Bi5FeTi3O15 (BFTO) under high hydrostatic pressure conditions. The results showed that the lattice parameters of BFTO undergo structural modifications with increasing pressure. The study also revealed the development of magnetic ordering in BFTO with increasing pressure at 5K, which disappeared at higher temperatures.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)