Article
Materials Science, Multidisciplinary
Diana Nesheva, Zsolt Fogarassy, Margit Fabian, Temenuga Hristova-Vasileva, Attila Sulyok, Irina Bineva, Evgenia Valcheva, Krassimira Antonova, Peter Petrik
Summary: This research focuses on the reformation of semiconductor nanocrystals in dielectric matrices under electron irradiation, as well as the influence of neutron irradiation on substoichiometric silicon oxide. The study shows that neutron irradiation can induce phase separation in homogeneous films and decrease the volume fraction of amorphous silicon phase in inhomogeneous films.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Engineering, Mechanical
M. Lablali, H. Mes-adi, A. Eddiai, M. Mazroui
Summary: In this study, the growth processes of Cu thin film on stepped Si(001) substrate were investigated using molecular dynamics simulation. The results showed that the morphology of Cu film on different stepped substrates was not smooth, and the surface roughness increased with the augmentation of the step height. Furthermore, the penetration of Cu atoms in the stepped substrate was more important and deeper within the upper terrace compared to the lower terrace. The numerical calculations demonstrated that the step height had no significant effect on the penetration of Cu atoms on the Si(001) stepped substrate.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2023)
Article
Chemistry, Multidisciplinary
Ian Y. H. Wu, Stephen J. Jenkins
Summary: The interaction between highly reactive species and solid surfaces can lead to adsorption modes that are different from the typical molecular and dissociative events. This work presents first-principles molecular dynamics calculations that provide insight into the details of abstractive adsorption and highlight the rarity of atomic ejection.
Article
Materials Science, Multidisciplinary
D. V. Stryukov, Ya. Yu. Matyash, A. V. Pavlenko
Summary: A series of Ba2NdFeNb4O15 thin films were fabricated on Si(001) substrates with a thickness range of 75 nm to 1 μm using RF-cathode sputtering. The films exhibited a smooth and uniform surface and a polycrystalline structure with c-axis texture. Compared to bulk samples, the films showed a significant increase in lattice parameter c. External field action could induce polarized regions in both thin and thick films, but rapid relaxation of these regions occurred.
Article
Chemistry, Physical
Jinsol Im, Jung-Dae Kwon, Dong-Ho Kim, Sukeun Yoon, Kuk Young Cho
Summary: This study developed a new sandwich Si anode without the need for prelithiation, providing high conductivity and specific capacity. It showed excellent performance in terms of initial Coulombic efficiency and capacity retention, demonstrating great potential for practical applications.
Article
Chemistry, Multidisciplinary
Caiyun Hong, Zhen Song, Bing Lin, Pengxu Ran, Xiaopeng Xie, Congying Jiang, Rui-Hua He
Summary: We report on the dramatic effect of substrate surface reconstruction on thin film growth. Different surface reconstructions lead to the growth of thin films with distinct structures. Based on in-situ measurements of the electronic structure, two different phases of thin films were identified, which grow on substrates with different surface reconstructions.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Article
Biotechnology & Applied Microbiology
Ya An Tsai, Tianshu Li, Lucia A. Torres-Fernandez, Stefan C. Weise, Waldemar Kolanus, Shinji Takeoka
Summary: This study proposed a simple method using porous nanosheets to promote stem cell spheroid formation and preservation, which showed better cell viability and division rate compared to suspension culture.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
R. Fersi, A. P. Dalia
Summary: This paper presents the study on the crystal structure, morphology, and magnetic properties of nanocrystalline Zr6Fe23 thin films. The Zr6Fe23 films of various thicknesses were grown on Si(001) substrates using RF magnetron sputtering. The results showed a single-phase cubic structure with preferred orientation for films with certain thicknesses, while films with larger thicknesses exhibited a polycrystalline nature with multiple orientations. The magnetic properties were influenced by the thickness and were found to be correlated with the film morphology and intergrain exchange coupling. The study demonstrated the potential applications of nanocrystalline Zr6Fe23 films in magnetic recording and spintronic devices.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Crystallography
H. Mes-adi, K. Saadouni, M. Badawi, M. Mazroui, S. Lebegue
Summary: In this study, molecular dynamics simulation with the modified embedded atom method was used to investigate the effects of deposition and annealing on the morphology and microstructure of a copper thin film deposited on a silicon (001) substrate. The results show that the growth mode of the copper atoms changes from island-like to layer-by-layer as the deposition rate decreases. Additionally, the interface intermixing between copper atoms and the silicon substrate increases with higher substrate temperature and deposition rate. The as-deposited film has an amorphous structure at high deposition rates, but a crystalline structure at a low deposition rate of 1at/ps. After annealing, the film structure transitions from amorphous to crystalline.
JOURNAL OF CRYSTAL GROWTH
(2022)
Article
Materials Science, Multidisciplinary
Rotem Zilberberg, Iryna Polishchuk, Lotan Portal, Silvia Milita, Giuseppe Falini, Alexander Katsman, Boaz Pokroy
Summary: The study introduces a self-driven approach for patterning metal and semiconductor surfaces by solidifying eutectic Au-Si thin films on Si(001) substrates. The study confirms the orientation relationship and lattice mismatch at the Au-Si interface using selected area electron diffraction and synchrotron radiation scattering techniques. The study highlights the potential application of substrate-oriented pattern formation in other systems.
Article
Materials Science, Multidisciplinary
Jialiang Sun, Jiajie Lin, Tingting Jin, Chaodan Chi, Min Zhou, Robert Kudrawiec, Jin Li, Tiangui You, Xin Ou
Summary: This study successfully achieved heterogeneous integration of single-crystalline GaAs thin film on a Si substrate through optimized ion implantation conditions. After surface treatments, the quality of the transferred GaAs thin film was significantly improved.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
Zhiqiang Cao, Longqing Chen, Zhenxiang Cheng, Wenbin Qiu
Summary: By coating non-superconducting FeSe ultrathin films (~8 nm) grown on calcium fluoride substrates with an optimized amount of Mg via a simple in-situ technique, the transition from insulator to superconductor was achieved, with a critical temperature of 9.7 K and an upper critical field of 30.9 T. The revival of superconductivity in FeSe films is mainly attributed to the highly crystallized FeSe and extra electron doping from the external Mg-coating process. This work provides a new strategy for inducing superconductivity in FeSe films with non-superconducting behavior, contributing to a more comprehensive understanding of iron-based superconductivity and benefiting downstream applications such as magnetic resonance imaging, high-field magnets, and electrical cables.
Article
Chemistry, Physical
Nanxi Lin, Youzhi Lin, Guanjie Wu, Xin Chen, Zongzhi Zhang, Xiaolin Hu, Naifeng Zhuang
Summary: Ce3+-doped rare-earth iron garnet is a popular magneto-optical material in the field of optical communication and information technology. This study focused on preparing high-quality Si-based (Gd2Ce)Fe5O12 and (Gd2Ce)(Fe4Ga)O12 thin films, showing that introducing Ga3+ ions can improve the optical transmittance and stability of the films, and reduce the lattice mismatch with the Si substrate. Heating the substrate to 500 degrees Celsius is beneficial for growing high-quality Si-based films, which is crucial for the integration of magneto-optical devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
B. Santos Burgos, Jorge Iribas Cerda, J. M. Puerta, R. Lopez-Martin, J. A. De Toro, Davide Peddis, C. Binns
Summary: We have characterized the structure and magnetic properties of ultra-thin Fe films grown on Re(0001) at different temperatures. The results show that above 475 K, the films exhibit layer-by-layer growth up to the third layer, followed by 3D growth. The first Fe layer is pseudomorphic with the Re substrate, while subsequent layers show a quasi-hexagonal or distorted bcc lattice, which gradually approaches the bulk bcc lattice at 10 Fe atomic layers.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
H. Mes-adi, K. Saadouni, M. Mazroui
Summary: The deposition processes of Cu atoms onto Si substrate were studied in atomic-scale molecular dynamics simulation, revealing significant effects of incident angles on the microstructure properties of Cu thin film. Results showed that at higher incident angles, the thin film morphology changed to a columnar structure with increased surface roughness and decreased film density. The analysis also demonstrated little effects of deposition angles on interface mixing, with Cu atoms penetrating limited layers onto the substrate.
Article
Chemistry, Physical
Elmar Yu Kataev, Lukas Fromm, Quratulain Tariq, Daniel Wechsler, Federico J. Williams, Nataliya Tsud, Stefano Franchi, Hans-Peter Steinrueck, Andreas Gorling, Ole Lytken
Summary: Carboxylic acids, such as phthalic acid, can be used to bind organic molecules to oxide surfaces. This study investigates the adsorption and reactions of phthalic acid on MgO(100) at different temperatures and coverages. It is found that at low coverage and low temperature, phthalic acid deprotonates and forms dicarboxylate species. However, at higher coverage, intact phthalic acid becomes more dominant. Further annealing results in the conversion of intact acid groups to carboxylate species. The stability of these species depends on coverage, remaining stable up to 500 - 600 K.
Article
Chemistry, Physical
Haiko Wittkaemper, Sven Maisel, Michael Moritz, Mathias Grabau, Andreas Goerling, Hans-Peter Steinruck, Christian Papp
Summary: In this study, X-ray photoelectron spectroscopy (XPS) and ab-initio molecular dynamics (MD) simulations were used to investigate the composition of the liquid alloy surface of gallium indium alloys. The results show that the surface of the alloy is enriched in indium, with the enrichment decreasing slightly with increasing temperature. During cooling, the alloy surface acts as a favorable nucleation site for the precipitation of indium.
Article
Chemistry, Physical
Daniel Hemmeter, Ulrike Paap, Nicola Taccardi, Julian Mehler, Peter S. Schulz, Peter Wasserscheid, Florian Maier, Hans-Peter Steinruck
Summary: This study investigated the formation and surface behavior of Pt(II) and Pd(II) complexes with ligand systems derived from nitrile-functionalized ionic liquids (ILs) using ARXPS. The results showed that these ligand systems enabled a high solubility of the metal complexes in IL solutions, and the formed complexes showed a homogeneous distribution at the surface.
Editorial Material
Chemistry, Multidisciplinary
Daniel Hemmeter, Daniel Kremitzl, Peter S. Schulz, Peter Wasserscheid, Florian Maier, Steinrueck Hans-Peter
Summary: The cover of this issue features two Pt catalysts dissolved in an ionic liquid, studied by the groups of Hans-Peter Steinruck and Peter Wasserscheid at Friedrich-Alexander-Universitat Erlangen-Nurnberg. One of the catalysts shows significant enrichment at the gas/IL interface, thanks to the presence of fluorinated side chains in the ligand system. This effect is evidenced by enhanced Pt signals in angle-resolved photoelectron spectroscopy, which is not observed in the complex without fluorinated side chains.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Materials Science, Coatings & Films
Kang-Yi Lin, Christian Preischl, Christian Felix Hermanns, Daniel Rhinow, Hans-Michael Solowan, Michael Budach, Hubertus Marbach, Klaus Edinger, G. S. Oehrlein
Summary: Electron-stimulated etching (EBIE) is a promising approach for material removal as it utilizes an electron-neutral synergistic effect and reduces plasma-induced damage. However, one challenge for EBIE is the limited selection of chemical precursor molecules for functionalized materials suitable for etching. In this study, a new experimental approach combining a remote plasma source and an electron flood gun was used to functionalize substrate surfaces and evaluate the etching rates and selectivity of Si-based materials.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Chemistry, Physical
Rajan Adhikari, Jan Brox, Stephen Massicot, Michael Ruppel, Norbert Jux, Hubertus Marbach, Hans-Peter Steinrueck
Summary: We studied the adsorption behavior of six types of 2H-tetrakis-(3, 5-di-tert-butylphenyl)(x)benzoporphyrin molecules on different metal substrates using scanning tunneling microscopy (STM) under ultra-high vacuum conditions. The adsorption behavior and stability of these molecules were found to vary on Ag(111), Cu(111), and Cu(110). The different conformations of the molecules on each substrate were attributed to the interactions between the tert-butyl and phenyl groups and the atoms of the substrate.
Article
Chemistry, Physical
Valentin Schwaab, Felix Hemauer, Eva Marie Freiberger, Natalie J. Waleska-Wellnhofer, Hans-Peter Steinrueck, Christian Papp
Summary: The molecular pair of 1-cyclohexylethanol and acetophenone is an interesting system for chemical hydrogen storage, as it combines different classes of liquid organic hydrogen carriers. The dehydrogenation reaction of 1-cyclohexylethanol to acetophenone was investigated on a Pt(111) catalyst. The reaction occurs in two steps, yielding 1-cyclohexylethanone and an acetophenone-like species. The system shows good thermal robustness.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Editorial Material
Chemistry, Physical
Hans-Peter Steinrueck
Article
Chemistry, Physical
Daniel Hemmeter, Ulrike Paap, Florian Maier, Hans-Peter Steinrueck
Summary: In this study, the surface composition and interfacial behavior of commercial [Rh(COD)(2)][TfO] in different ILs were investigated using ARXPS. The complex was found to undergo non-intact decomposition in these ILs, with the loss of COD ligands and depletion of the metal center from the IL/vacuum interface. Increasing the chain length of the aliphatic substituent on the imidazolium cation resulted in a more significant depletion, attributed to the higher surface affinity of the solvent cations with longer alkyl chains. The loss of COD ligands allowed in situ ligand substitution with TPPTS, leading to an increase in the surface concentration of Rh and the formation of a Schrock-Osborn-type catalyst.
Article
Chemistry, Physical
Daniel Hemmeter, Ulrike Paap, Nicolas Wellnhofer, Afra Gezmis, Daniel Kremitzl, Peter Wasserscheid, Hans-Peter Steinrueck, Florian Maier
Summary: We have demonstrated that Pt catalyst complexes can be enriched at the surface of an ionic liquid by introducing perfluorinated substituents, which act as buoys to drag the metal complex towards the surface. Our study shows that the enrichment is most pronounced at a concentration of 1 %mol and is temperature-dependent. The enrichment of Pt complexes at the surface is reflected by the decrease in surface tension with increasing catalyst concentration. The results are important for the design of catalyst systems with large contact areas, such as supported ionic liquid phase (SILP) catalysis.
Editorial Material
Chemistry, Physical
Rajan Adhikari, Jan Brox, Stephen Massicot, Michael Ruppel, Norbert Jux, Hubertus Marbach, Hans-Peter Steinrueck
Summary: This research investigates the self-assembly behavior of 2H-diTTBP(x)BPs molecules on Ag(111), Cu(111), and Cu(110) surfaces to understand the fundamental aspects of this process. The study reveals a novel and peculiar long-range-ordered quadratic arrangement of crown-shaped molecules on Ag(111) and Cu(111) surfaces.
Article
Chemistry, Physical
Eva Marie Freiberger, Julien Steffen, Natalie J. Waleska-Wellnhofer, Anton Harrer, Felix Hemauer, Valentin Schwaab, Andreas Gorling, Hans-Peter Steinruck, Christian Papp
Summary: This study investigates the adsorption and thermal stability of bromine on Rh(111) using synchrotron radiation-based XPS, LEED and DFT. Depending on the coverage, four different superstructures are observed. At low coverages, bromine occupies fcc hollow sites while, at higher coverages, a compression of the overlayer leads to bridge-bound bromine atoms. Br/Rh(111) shows a high thermal stability, implying strong covalent bonding.
Article
Chemistry, Physical
Leonhard Winter, Simon Trzeciak, Cynthia C. Fernandez, Stephen Massicot, Timo Talwar, Florian Maier, Dirk Zahn, Hans-Peter Steinrueck
Summary: The SCILL concept is a promising method to enhance the selectivity of hydrogenation reactions. By studying the modification of Pt(111) surface with imidazolium ionic liquid, it is found that the IL film can effectively block the adsorption of 1-butene while not significantly affecting the adsorption of 1,3-butadiene. The densification/relaxation of the IL film is proposed as the key mechanism to control olefin adsorption.
Article
Nanoscience & Nanotechnology
Elif Bilgilisoy, Ali Kamali, Thomas Xaver Gentner, Gerd Ballmann, Sjoerd Harder, Hans-Peter Steinrueck, Hubertus Marbach, Oddur Ingolfsson
Summary: Motivated by the potential application of focused-electron-beam-induced deposition (FEBID) in plasmonic and detector technology, this study comprehensively investigated [Au(CH3)2Cl]2 as a potential precursor. The dissociation processes and composition of FEBID deposits were studied under single collision conditions and in an ultrahigh-vacuum (UHV) chamber. The results showed significant carbon loss and chlorine removal in the gas phase, while quantitative chlorine loss and desorption were observed in the UHV setup. The precursor was found stable at ambient conditions and suitable for use in HV instruments, producing deposits with high gold content.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
