Article
Food Science & Technology
Kotaro Matsui, Takamichi Kamigaki, Ryota Wakui, Yuri Nishino, Yoshiko Ito, Atsuo Miyazawa, Koichiro Yoshioka, Makoto Shiota
Summary: The physical properties of butter are influenced by its microstructure, and a novel observation method using AFM without pretreatment process was proposed in this study to observe the fat crystal structure. Measurements of milk fat-crystalline nanoplatelets were conducted using TEM and SAXS, revealing the thickness and structure of the fat crystals. Through this observation method, the relationship between the physical properties of butter and its fat crystal network can be discerned, benefiting the bread and confectionery industries in improving butter processing conditions.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Ahlem Bendaoued, Mouna Messaoud, Omar Harzallah, Sophie Bistac, Rached Salhi
Summary: In this paper, TiO2 was prepared by the sol-gel process and reinforced the polypropylene matrix using supercritical drying of ethanol, while maintaining thermal and mechanical properties and ensuring good interface compatibility. The use of 5wt.% TiO2 was found to effectively increase the crystallinity and dynamic and static mechanical properties of the polypropylene matrix.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Shazia Naheed, Muhammad Shahid, Rashida Zahoor, Zumaira Siddique, Nasir Rasool, Sajjad Haider, Shaukat Khan
Summary: This study focused on the synthesis and characterization of polyurethane elastomers based on xanthan gum and titanium dioxide, revealing thermal stability, micro-phase separation, antimicrobial activity, and hydrophilicity. The results demonstrate the potential of these polymers in various applications.
Article
Physics, Multidisciplinary
D. Stryukov, A. Pavlenko, Ya Yu Matyash, A. Nazarenko
Summary: High quality Ba2NdFeNb4O15 epitaxial films with thicknesses ranging from 10 nm to 1 μm have been successfully fabricated by RF cathode sputtering. The films exhibit orientational domains with a 18.4-degree in-plane rotation and tetragonal unit cell. The surface of the films is smooth and the presence of orientational domains does not affect the surface relief. X-ray diffraction, atomic force microscopy and energy dispersive elemental analysis confirm the absence of impurities in the obtained films.
Article
Materials Science, Multidisciplinary
Barbara Putz, Thomas E. J. Edwards, Emese Huszar, Laszlo Petho, Patrice Kreiml, Megan J. Cordill, Dominique Thiaudiere, Stephane Chiroli, Fatih Zighem, Damien Faurie, Pierre-Olivier Renault, Johann Michler
Summary: A unique deposition approach combining atomic layer deposition (ALD) and magnetron sputtering was used to fabricate thin film multilayer structures on flexible polymer substrates. The deformation behavior of these multilayers was investigated through cross-sectional TEM analysis and biaxial tension testing.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Physical
Zhen Liu, Oliver Hoefft, Alexander Simon Goedde, Frank Endres
Summary: The application of ionic liquids in ultra-high vacuum allows for the investigation of electrochemical reactions and interfacial properties through in situ electrochemical XPS. The study showed that cathodic corrosion of a gold electrode in an ionic liquid electrolyte leads to the formation of anionic gold species (Au-), providing new opportunities for research on deposition processes, corrosion behavior, and catalytic processes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Ceramics
T. S. Ilina, E. A. Skryleva, A. Yu Ermakov, T. A. Sviridova, F. O. Milovich, B. R. Senatulin, A. M. Kislyuk, E. D. Politova, G. M. Kaleva, D. A. Kiselev, Yu. N. Parkhomenko
Summary: This study investigates the properties of KNN ceramics with different ferroelectric phase content using various techniques. The correlation between PFM image, SEM phase and EDS phase composition is found. It is discovered that specimens with low ferroelectric phase content contain secondary phases with different composition and structure than the perovskite. XPS analysis reveals the presence of two different chemical states of potassium ions, inside and outside the perovskite lattice. The correlation between ferroelectric properties and K2 concentration can serve as a reliable indicator.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
M. Vadivel, R. Ramesh Babu, M. Sridharan
Summary: This study reports the characteristics of Cr3+- and Zn2+-substituted CoFe2O4 thin films prepared by solution-based spray pyrolysis method. The results show that the substitution of transition metal ions significantly affects the surface topography and gas-sensing behavior of the films. Cr3+-substituted CoFe2O4 thin films exhibit excellent sensing behavior towards NH3 gas at room temperature.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Ya. Yu. Matyash, D. V. Stryukov, A. V. Pavlenko
Summary: This paper presents the study results of barium-neodymium ferroniobate films with thicknesses of 180 and 980 nm obtained by RF cathode sputtering. Through X-ray diffraction and magnetic force microscopy, it was found that the films are single-phase, epitaxial, and free from magnetic impurities. Atomic force microscopy data indicates that the growth of the films follows the Volmer-Weber mechanism.
Article
Engineering, Chemical
Rosa M. Woo-Garcia, Isaac Rodriguez-Ibarra, Edith Osorio-de-la-Rosa, Cesia Guarneros-Aguilar, Felipe Caballero-Briones, Ricardo Agustin-Serrano, Agustin L. Herrera-May, Francisco Lopez-Huerta
Summary: The development and improvement of thin film deposition techniques is crucial for obtaining new materials at submicro and nano scale with high homogeneity and thickness control. In this study, an automated device was designed and built for depositing binary or ternary compound films using the Successive Ionic Layer Adsorption and Reaction (SILAR) method. The performance of the instrument was verified through the deposition of PbS films, demonstrating its capability to obtain crystalline films with controllable thicknesses.
Review
Chemistry, Physical
Nesrine Hasnaoui, Ali Hafs, Toufik Hafs, Faiza Bendjedaa
Summary: Fe-10Pb (wt%) nanocrystalline powders were synthesized by mechanical alloying processes with a high-energy ball mill. The evolution of phase and magnetic properties were investigated as a function of milling time. Results showed that lattice parameter decreased and grain size reduced with increasing milling time, influencing the magnetic properties of the alloy nanoparticles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Materials Science, Multidisciplinary
Joao Batista Souza Junior, Gabriel Ravanhani Schleder, Jefferson Bettini, Icamira Costa Nogueira, Adalberto Fazzio, Edson Roberto Leite
Summary: Atomic-scale structure determination is crucial for nanomaterial understanding and new technology development. Electron diffraction offers advantages for atomic structure characterization, with potential to become a routine tool in nanomaterial science.
Article
Materials Science, Multidisciplinary
Chen Shao, Fenglin Guo, Xiufang Chen, Xiaomeng Li, Wancheng Yu, Xianglong Yang, Xuejian Xie, Xiaobo Hu, Xiangang Xu
Summary: In this paper, atomic force microscopy (AFM) was used to study the atomic steps of the 4H-SiC substrate (0001) surface. The results show that the distributions of the atomic step morphology on the surfaces of wafers obtained from the same crystal are consistent. Based on a comparison of high-resolution X-ray diffraction (HRXRD) results, basal plane bending is the fundamental reason for the change in the atomic step morphology in different regions of the substrate.
Article
Chemistry, Physical
Okkyun Seo, Jaemyung Kim, Jiayi Tang, L. S. R. Kumara, Koji Kimoto, Kazushi Miki, Akifumi Matsuda, Mamoru Yoshimoto, Osami Sakata
Summary: This research focuses on the influence of atomic arrangement on the electrical and catalytic properties of oxide thin films. The atomic arrangement of LiNiO2 thin films was investigated by uniaxial compression and annealing at 600℃ on sapphire substrates. Thin films with a rock-salt structure were grown using pulsed laser deposition method at room temperature. It was observed that the as-grown thin films transformed from a rock-salt to a layered structure after uniaxial compression at 600℃, and the layer thickness of the latter structure increased with increasing uniaxial compression pressure. Uniaxial compression provides a useful tool for oxide thin film research, contributing to the development of new functional oxide materials and adjustment of the atomic ordering of cation materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
Stanislav Hasenohrl, Michal Blaho, Edmund Dobrocka, Filip Gucmann, Michal Kucera, Peter Nadazdy, Roman Stoklas, Alica Rosova, Jan Kuzmik
Summary: Metal organic chemical vapor deposition was used to directly grow N-polar In-rich InAlN layers on on-and off-axis c-plane sapphire substrates. The InAlN layer's composition and surface morphology can be controlled by adjusting the trimethylindium flow. Room temperature photoluminescence shows narrow full-width at half maximum for all samples, indicating the potential of using In-rich N-polar InAlN as a buffer layer in new types of heterostructure devices.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Physics, Applied
Matthias Roessle, Olivier Thomas, Cristian Mocuta, Raphael Rousset, Michael Texier, Stephanie Escoubas, Catherine Dubourdieu, Eudes B. Araujo, Thomas W. Cornelius
Summary: The domain switching dynamics of a polycrystalline thin film made of lanthanum-modified lead zirconate titanate were investigated. The results show that the film has a built-in electric field and exhibits switching behavior comparable to epitaxial thin films.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Bassel Ayoub, Stephane Moreau, Sandrine Lhostis, Helene Fremont, Sebastien Mermoz, Emeline Souchier, Emilie Deloffre, Stephanie Escoubas, Thomas W. Cornelius, Olivier Thomas
Summary: Hybrid bonding is a promising 3D packaging technology for achieving high interconnect density between electronic chips. Understanding the thermomechanical behavior of 300 nm Cu pads is crucial for successful bonding. Experimental findings and finite element modeling simulations provide a deep understanding of the properties of single nanocrystalline Cu grains and offer solid conclusions for successful hybrid bonding.
MICROELECTRONIC ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
M- Richard, S. Labat, M. Dupraz, N. Li, E. Bellec, P. Boesecke, H. Djazouli, J. Eymery, O. Thomas, T. U. Schulli, M. K. Santala, S. J. Leake
Summary: This study successfully measured the three-dimensional shape and strain of platinum nanoparticles with a diameter smaller than 30 nm using Bragg coherent diffraction imaging, opening up new possibilities for the observation of realistic catalytic particles.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2022)
Article
Materials Science, Multidisciplinary
Charlotte Kutyla, Clement Bessouet, Sylvain Lemettre, Laetitia Leroy, Alain Bosseboeuf, Philippe Coste, Thierry Sauvage, Olivier Wendling, Aurelien Bellamy, Piyush Jagtap, Stephanie Escoubas, Christophe Guichet, Olivier Thomas, Johan Moulin
Summary: In this study, we investigated the hydrogen sorption of yttrium-based getters using ion beam analysis techniques. The results showed that oxidation during annealing could prevent or not prevent hydrogen sorption depending on the film composition. Due to fast diffusion, hydrogen tended to accumulate near the film/substrate interface and diffuse into the substrate.
Article
Chemistry, Multidisciplinary
Olivier Thomas, Ismail Cevdet Noyan
Summary: Various formulations for diffraction from ultra-thin single-crystal films in symmetric scattering configuration were compared, showing that some implicit assumptions in these formulations are no longer valid within this thickness range. As a result, traditional analysis methods cannot establish a correlation between the position, integrated intensity, integral breadth of a diffraction peak, and the lattice spacing or the number of unit cells along the diffraction vector. Simple equations were proposed to obtain accurate values of these parameters for the specific sample/diffraction geometry combination. The development of rigorous formalisms for analyzing diffraction from nanocrystals is suggested.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2023)
Article
Chemistry, Multidisciplinary
Marie-Ingrid Richard, Stephane Labat, Maxime Dupraz, Jerome Carnis, Lu Gao, Michael Texier, Ni Li, Longfei Wu, Jan P. Hofmann, Mor Levi, Steven J. Leake, Sergey Lazarev, Michael Sprung, Emiel J. M. Hensen, Eugen Rabkin, Olivier Thomas
Summary: An unexpected anomalous glide plane in two Pt submicrometer crystals is observed using Bragg coherent diffraction imaging. The structure of the defects can be imaged in these faceted Pt crystals, allowing the probing of plasticity and unusual defect behavior at the nanoscale.
Article
Engineering, Electrical & Electronic
Etienne Navarro, Thomas W. Cornelius, Henry Proudhon, Rahul Sahay, Ihor Radchenko, Stephanie Escoubas, Pooi See Lee, Nagarajan Raghavan, Arief S. Budiman, Olivier Thomas
Summary: Face-centered cubic/body centered cubic (FCC/BCC) nanolaminates prepared by Accumulative Roll Bonding (ARB) have been extensively studied for their unique mechanical properties. Recent experiments on Cu/Nb ARB samples have shown an anisotropic interface sliding behavior related to the strong in-plane texture. A shear test was developed to test interface sliding on a macroscale using a specific sample geometry and in situ tensile loading on an X-ray synchrotron beamline. However, early brittle failure prevented further investigation of interface sliding due to crack initiation from the inner surfaces of the notches used to induce shear.
MICROELECTRONIC ENGINEERING
(2023)
Article
Chemistry, Physical
Clement Atlan, Corentin Chatelier, Isaac Martens, Maxime Dupraz, Arnaud Viola, Ni Li, Lu Gao, Steven J. J. Leake, Tobias U. U. Schulli, Joel Eymery, Frederic Maillard, Marie-Ingrid Richard
Summary: Coherent diffraction is used to map and quantify strain within individual Pt nanoparticles under electrochemical control. Heterogeneous and potential-dependent strain distribution is observed between different facets and undercoordinated atoms, as well as strain propagation from the surface to the bulk of the nanoparticle. These findings provide valuable insights for the design of strain-engineered nanocatalysts.
Article
Nanoscience & Nanotechnology
Hugo Iteney, Thomas W. Cornelius, Olivier Thomas, Jonathan Amodeo
Summary: The mechanics of nano-objects are strongly influenced by the experimental setup. This study introduces a new strategy of load-controlled molecular dynamics simulations to analyze nanoparticle compression. The results show that load-controlled simulations align better with experimental observations, and the evolution of dislocation microstructure is also investigated.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Yuri Bernardes, Lucas A. B. Marcal, Barbara L. T. Rosa, Ailton Garcia Jr, Christoph Deneke, Tobias U. Schulli, Marie-Ingrid Richard, Angelo Malachias
Summary: Investigations on epitaxial nanostructures with size of tens of nanometers have been challenging for high strain sensitivity techniques with restricted spatial resolution, such as x-ray nanoprobe techniques. The diffraction limit imposes limitations on the voxel or pixel sizes obtained in coherent diffraction imaging or ptychographic reconstructions. However, the InGaAs/GaAs Stranski-Krastanov system provides a model to directly analyze and identify epitaxial systems with large lattice mismatch and appreciable interfacial strain by observing the strain-induced footprint along a few microns if the membrane thickness is comparable to the nanostructure size.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Physics, Applied
Philipp Hans, Cristian Mocuta, Yannick Le-Friec, Philippe Boivin, Roberto Simola, Olivier Thomas
Summary: The crystallization behavior and kinetics of a compositionally optimized, N-doped Ge-rich Ge-Sb-Te alloy (GGST) in the slow crystallization regime were systematically investigated using synchrotron x-ray diffraction (XRD) in situ during heat treatment. The results showed that the crystallization temperature of the alloy had an inverse relationship with the film thickness, and a nucleation-controlled crystallization process occurred in two stages.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Tao Zhou, Gabriel Spartacus, Alexander Dahlstrom, R. Prasath Babu, Anton Davydok, Peter Hedstrom
Summary: To improve the mechanical properties of a high-performance tool steel, the alloy composition and heat treatment were redesigned using computational thermodynamics and kinetics in order to achieve fine dispersions of nanoscale precipitates. The designed chemistry and heat treatment were successfully implemented, resulting in a high number density of (V, Mo)C precipitates with an average diameter of about 5 nm after tempering the martensite at 600 degrees C for 2 h, as confirmed by advanced microstructural characterization and mechanical testing.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Olof Backe, Sebastian Kalbfleisch, Dirk Stiens, Thorsten Manns, Anton Davydok, Mats Halvarsson, Magnus Hornqvist Colliander
Summary: Recent progress in CVD technology has enabled the synthesis of metastable cubic Ti1-xAlxN coatings with high Al content. These coatings have unique micro-and nano-structures and exhibit exceptional hardness and resistance to wear and oxidation. The thermal stability and decomposition behavior of nano-lamellar CVD Ti0.2Al0.8N have been investigated, revealing the formation of hexagonal AlN (h-AlN) in the grain boundaries and a bulk transformation of the nano-lamellar structure at higher temperatures. The results provide insights into the complex decomposition processes in these metastable cubic coatings.
Article
Materials Science, Multidisciplinary
Rahul Sahay, Yen-Cheng Tu, Izzat Aziz, Arief S. Budiman, Cher Ming Tan, Pooi See Lee, Olivier Thomas, Nagarajan Raghavan
Summary: In this study, the reliability of nickel-niobium oxide (crystalline-amorphous) sandwich nanolayers on a PI substrate (Ni-Nb2O5-PI) was reported as a potential candidate for electrodes or interconnects for flexible electronic or energy devices. The incorporation of amorphous niobium oxide into the nickel nanolayers significantly improved their fatigue/fracture strength with a slight reduction in electrical conductivity and low resistance oscillation essential for operational reliability of flexible devices. Additionally, the nickel-niobium oxide/polyimide stack was demonstrated to be electrically/mechanically stable up to 500 K stress cycles at a bending radius of 8.5 mm.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Physical
Kritika Singh, Surya Snata Rout, Christina Krywka, Anton Davydok
Summary: This study analyzed lattice distortion and ion implantation in metallic micropillars prepared using plasma focus ion beam (PFIB) milling. Higher Xe ion energy led to higher density of implanted ions within the redeposited and milled material. Mixing of ions significantly influenced lattice structure, causing deformation in regions with higher ion concentrations.
