Article
Materials Science, Multidisciplinary
D. K. Q. Mu, Z. Zhang, Y. H. Xie, J. M. Liang, J. Wang, D. L. Zhang
Summary: By optimizing the high energy ball milling and spark plasma sintering time, the hardness and strength of the 5vol%SiC/AA2024 nanocomposite can be significantly enhanced, while improving its ductility. The strengthening mechanisms of the 5vol%SiC/AA2024 nanocomposite mainly come from nanoparticle strengthening and grain boundary strengthening.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Multidisciplinary
Jiayue Wang, Komal Syed, Shuai Ning, Iradwikanari Waluyo, Adrian Hunt, Ethan J. Crumlin, Alexander K. Opitz, Caroline A. Ross, William J. Bowman, Bilge Yildiz
Summary: Nanostructured functional oxides, such as thin-film La0.6Sr0.4FeO3 (LSF), demonstrate novel utility in fabricating self-assembled metal oxide nanocomposites with tunable functionalities through exsolution. Exsolution triggers the formation of metallic iron nanoparticles, Ruddlesden-Popper domains, and Fe-deficient percolated channels, increasing electronic conductivity by more than two orders of magnitude and enabling dynamic modulation of magnetization, showcasing the potential for scalable fabrication of complex metal oxide nanocomposites for electrochemical and electronic applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Metallurgy & Metallurgical Engineering
Jian-Yu Li, Shi-Ning Kong, Chi-Kun Liu, Bin-Bin Wang, Zhao Zhang
Summary: The variation of chemical compositions affects the mechanical property of 6xxx series aluminum alloy FSAM joint. Increasing silicon or magnesium contents enhances the hardness and yield stress. As the volume fraction decreases, the average grain size increases.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Brian C. Wyatt, Andreas Rosenkranz, Babak Anasori
Summary: MXenes, as two-dimensional materials, have wide applications in energy, electronics, sensors, etc., with their mechanical properties, flexibility, and strong adhesion playing key roles. Despite the critical nature of MXenes' performance, further exploration is needed in understanding their mechanical and tribological behavior.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Peiying Ma, Zhou Wang, Yibei Jiang, Zongwang Huang, Lu Xia, Jinlong Jiang, Fulai Yuan, Hui Xia, Yi Zhang
Summary: Loading hydrogels with ozone for antibacterial activity is an important research topic for expanding clinical applications. The incorporation of a nanoclay crosslinked nanocomposite hydrogel into polyacrylamide provided enhanced mechanical properties and abundant ozone adsorption sites. The nanocomposite demonstrated timely bactericidal and long-term antibacterial effects on Staphylococcus aureus, indicating its potential for development and application in the biomedical antibacterial field.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Materials Science, Multidisciplinary
Xiang-Jie Wang, Wei Sun, Jun-Fu Chen, Fu-Yue Wang, Lei Li, Jian-Zhong Cui
Summary: This study systematically investigated the microstructure and texture of 6016 aluminum alloy plates with different alloy compositions, showing that as Mg and Si contents increase, the grain size decreases and the strength of the alloy decreases.
Article
Materials Science, Multidisciplinary
Zhengyi Mao, Mengke Huo, Fucong Lyu, Yongsen Zhou, Yu Bu, Lei Wan, Lulu Pan, Jie Pan, Hui Liu, Jian Lu
Summary: A facile method based on hydrogels and ceramic nanofiller is proposed to fabricate composites with post-tunable mechanical properties. The wide tunable range of Young's modulus and ultimate stress can be achieved by combining solvent absorption and evaporation process with platelets reinforcement effect. The introduction of a nacre-like brick and mortar structure results in a large fracture toughness. The material demonstrates superior flexibility and designability.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Dong Wang, Le Dong, Guoying Gu
Summary: Lattice metamaterials constructed by curved microstructures exhibit large stretchability and are promising in soft electronics and soft robotics. Fractal structures are particularly efficient in improving stretchability as it shows multiple-order uncurling. However, the development of fractal metamaterials is hindered by hierarchical structures and large deformations. In this study, a design framework combining experiments, hierarchical theoretical models, and finite element simulations is developed to program the mechanical behaviors of fractal metamaterials. For 3D printing, a digital design tool is developed to visualize the structure and automatically generate the manufacturing representations. Results show that large stretchability, bionic stress-strain curve matching, and imperfection insensitivity can be programmed by tuning the geometric parameters. An integrated device of an electromyogram sensor embedded in an imperfection-insensitive fractal metamaterial that matches the J-shaped stress-strain curve of human skin is demonstrated. Light-emitting diode devices based on fractal metamaterial with shape reconfiguration are also presented. This study paves a new way to realize multifunctional soft devices using fractal metamaterials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Dong In Kim, Soonmin Yim, Seulgi Ji, Minsu Kim, Seunghun Lee, Minkyun Son, Da Som Song, Wooseok Song, Taek-Mo Chung, Sun Sook Lee, Ki-Seok An
Summary: In this paper, mesoporous metal fluoride films with precisely tunable refractive indices are prepared using a precursor-derived one-step assembly approach. The films exhibit a wide range of refractive indices (from 1.37 to 1.16 at 633 nm) due to the mesoporous structures formed through the interaction of Mg(CF3OO)(2) and La(CF3OO)(3) ions. Additionally, the authors create a gradient refractive index coating using multiple MgF2(1-x)-LaF3(x) layers, achieving high transmittance and antireflection properties.
Article
Chemistry, Multidisciplinary
Feng Xu, Young-lae Kim, Se-Young Oh, Byoung-Uk Cho
Summary: Cellulose aerogel beads (CABs) with porous core-shell structures were synthesized using a dilute ethanol solution-assisted freeze-drying. The addition of 10% ethanol before freeze-drying resulted in CABs with non-obvious structural shrinkage, large particle size, uniform pores, and high porosity.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Metallurgy & Metallurgical Engineering
Lina Bai, Chunxiang Cui, Tiebao Wang, Jinhua Ding, Qiangxiong Zhang
Summary: By adding a Fe-based nanocrystalline inoculant to T1 high-speed steel, the microstructure and mechanical properties of T1 HSS can be improved, leading to increased hardness, impact toughness, and wear resistance. This is achieved by refining the matrix structure and increasing the nucleation rate using Cr7C3 particles near the grain boundary of the Fe3W3C phase, resulting in a decrease in wear rate and an increase in impact energy.
STEEL RESEARCH INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Zhen Luo, Xinhai Zhang, Jun Zhao, Ruixue Bai, Chunyu Wang, Yuanhao Wang, Dong Zhao, Xuzhou Yan
Summary: Mechanical bonds have been used to construct mechanically interlocked aerogels (MIAs) with adaptivity and multifunctionality. However, fabricating MIAs with precise chemical structures and dynamic features is still challenging. In this study, we present MIAs carrying dense [2]rotaxane units, which provide stability and flexibility to the aerogel network. The chemical structure of [2]rotaxane allows for the fabrication of precise and full-scale mechanically interlocked networks using diverse solvents. Furthermore, the dynamic nature of [2]rotaxane allows for modulation of the morphologies and mechanical performances of MIAs under chemical stimuli. We hope that understanding the structure-property relationship in MIAs will contribute to the development of mechanically interlocked materials and provide new opportunities for constructing smart materials with multifunctionalities.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Ryan Dubay, Eric M. M. Darling, Jason Fiering
Summary: Mechanical properties of biological cells can be measured at scale using emerging microfluidic technologies, which are significantly faster than conventional instrumentation. However, there is a lack of precise and repeatable calibration methods due to the natural variability of cells. This study presents the development of tunable microparticles that can be used for efficient high-throughput measurements of mechanical properties at single-cell resolution.
MICROSYSTEMS & NANOENGINEERING
(2023)
Article
Physics, Applied
Arun Mondal, Mohd Faraz, Neeraj Khare
Summary: In this study, a flexible piezoelectric nanogenerator with tunable output power using a PVDF-CFO nanocomposite film was prepared. By incorporating ferromagnetic CFO nanoparticles into the PVDF matrix, the ferroelectric beta phase fraction of PVDF was enhanced, providing magnetic tunability to the PENG device. The output power of the PENG increased with the application of an external magnetic field, attributed to the decrease in resistance of the nanocomposite film.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Jianbo Tu, Xueqi Wang, Wenhao Dai, Haibo Zhang, Baochang Liu
Summary: This study successfully synthesized dense PDC samples doped with SiC whiskers under high pressure and high temperature conditions. The introduction of SiC whiskers improved the mechanical properties of PDC, including hardness, wear resistance, impact toughness, and thermal stability.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Nicholas T. Dee, Martin Schneider, Dmitri N. Zakharov, Piran R. Kidambi, A. John Hart
Summary: This study utilizes high-resolution, high-rate video capture of ETEM experimentation and automated image processing to quantitatively analyze particle formation and nucleation efficiency in CNT synthesis. The results show that pretreating the catalyst with carbon in a hydrogen atmosphere significantly improves particle density, CNT nucleation efficiency, and CNT density. Adding carbon during exposure to hydrogen is more effective than NH3 in increasing CNT nucleation efficiency, despite NH3 being a stronger reducing agent for iron. The insights from this study are important for improving CNT yield and productivity.
Article
Materials Science, Paper & Wood
Abhinav Rao, Thibaut Divoux, Crystal E. Owens, A. John Hart
Summary: This study presents the formulation and processing of crosslinked cellulose nanocrystal (CNC)-epoxy composites with a CNC fraction exceeding 50 wt%. The microstructure of the composites resembles the lamellar structure of nacre, combining bulk ductility with the brittle behavior of the aggregates at the nanoscale. The resulting composites exhibit high hardness and fracture toughness, making them suitable for various applications in the field of nanocomposites.
Article
Chemistry, Multidisciplinary
Cecile A. C. Chazot, Behzad Damirchi, Byeongdu Lee, Adri C. T. van Duin, A. John Hart
Summary: Molecularly organized nanocomposites of polymers and carbon nanotubes show great promise as high-performance materials. However, achieving controllable interaction between the polymer and carbon nanotubes remains a challenge. In this study, the researchers successfully coated carbon nanotubes with a conformal coating of meta-aramid, providing insights for future investigation of the mechanical properties of these composites and the application of in situ polymerization to other substrates.
Article
Engineering, Chemical
Daniel Oropeza, Ryan W. Penny, Daniel Gilbert, A. John Hart
Summary: This study demonstrates the use of a precision, mechanized powder spreading testbed coupled with transmission x-ray imaging for spatially-resolved, non-contact powder layer density measurements. The influence of several variables on the spreading of aluminum oxide powders is studied, including powder size and shape, spreading tool choice, traverse speed, and powder dispensing methodology. The findings show that these factors have an impact on the layer density of the spread powder.
Article
Chemistry, Physical
Jonghyun Ha, Yun Seong Kim, Ryan Siu, Sameh Tawfick
Summary: Drying of fine hair and fibers can lead to significant capillary-driven deformation, resulting in self-assembly of hair bundles into various shapes under high drain rates. The mechanism of self-assembly involves two stages: first, the liquid covers the outside of the bundles and facilitates fiber rearrangement, then the liquid drains from within the fiber spacing causing the fibers to pack tightly. Understanding dynamic elastocapillarity provides insights into the complex physics of wet granular drying.
Article
Nanoscience & Nanotechnology
Ashley L. Kaiser, Cecile A. C. Chazot, Luiz H. Acauan, Isabel Albelo, Jeonyoon Lee, Jeffrey L. Gair, A. John Hart, Itai Y. Stein, Brian L. Wardle
Summary: This study reports the fabrication of high-volume fraction CNT nanocomposites and investigates their process-structure-property relationships. The research found that a diluted resin is required to achieve complete infusion into high-volume fraction A-CNT arrays. The addition of A-CNTs enhances the anisotropic mechanical properties.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Kaihao Zhang, A. John Hart
Summary: The transfer-free synthesis route allows highly-uniform bilayer graphene to grow directly on dielectric substrates, addressing the issue of wrinkles and folds that occur in traditional methods. The graphene produced through this technique has a smooth surface, free of wrinkles, and exhibits low twist angles, making it promising for various applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
A. John Hart, Kehang Cui, Zhequn Huang, Changhong Cao, Qixiang Wang, Heng Zhang, Crystal Elaine Owens
Summary: By incorporating ruthenium nanoparticles on carbon nanotubes, a refractory selective solar absorber (RSSA) with omnidirectional broadband solar absorption and sharp spectral selectivity has been achieved, maintaining high absorption even at larger incident angles.
Article
Chemistry, Multidisciplinary
Mitisha Surana, Ganesh Ananthakrishnan, Matthew M. Poss, Jad Jean Yaacoub, Kaihao Zhang, Tusher Ahmed, Nikhil Chandra Admal, Pascal Pochet, Harley T. Johnson, Sameh Tawfick
Summary: The study investigates the impact of interfacial interaction between 2D materials and the substrate on the electronic properties, and quantitatively analyzes the orientation-dependent facet topographies observed on graphene using electron backscatter diffraction and atomic force microscopy. Molecular simulations reveal that apart from anisotropic interfacial energy, graphene strain plays a critical role in forming the observed topographies. These findings are also applicable to other 2D/3D heterostructures.
Article
Engineering, Mechanical
Kaitlyn Gee, Suh In Kim, Haden Quinlan, A. John Hart
Summary: This study presents a framework to estimate the throughput and cost of additive manufacturing (AM). The framework takes into account process parameters, material thermodynamic properties, and machine specifications. The study also analyzes the tradeoff between production cost and machine capability, providing insights beyond the limits of current commercially available equipment.
RAPID PROTOTYPING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Aagam Shah, Joshua A. Schiller, Isiah Ramos, James Serrano, Darren K. Adams, Sameh Tawfick, Elif Ertekin
Summary: In this work, we demonstrate a neural network that automatically distinguishes between pixels in SEM images corresponding to regions with and without graphene. The trained model shows an accuracy of over 90% and an F1 score over 80%. The network also exhibits reasonable performance when applied to other 2D materials, suggesting the potential for transfer learning.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Acoustics
Ali Kanj, Alexander F. Vakakis, Sameh Tawfick
Summary: On-chip phononic circuits enable customized transmission of elastic waves and can couple with electronics and photonics for new signal manipulation capabilities. A reduced-order model is constructed to demonstrate the transmission switching mechanism in coupled drumhead-resonator waveguides, showing how thermoelastic buckling induces phase transition and localization of frequency passband modes.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Engineering, Mechanical
Ali Kanj, Paolo Ferrari, Arend M. van der Zande, Alexander F. Vakakis, Sameh Tawfick
Summary: Nonlinear micro-electro-mechanical systems (MEMS) resonators offer new opportunities in sensing and signal manipulation through frequency tuning and increased bandwidth. This study designs, fabricates, and investigates drumhead resonators with strongly nonlinear dynamics, developing a reduced order model (ROM) to accurately capture their response. The resonators exhibit electrostatically-mediated thermoelastic buckling, with a tunability factor of 2.4x and switching between stiffness and softness.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Instruments & Instrumentation
Samuel Tsai, Qiong Wang, Yuzhe Wang, William P. King, Sameh Tawfick
Summary: This paper presents a method of manufacturing elastomeric robots using bioinspired kinematic design, coiled artificial muscle actuators, and projection additive manufacturing (AM). A fleet of 108 robot designs were designed and tested using high-speed AM. The smallest tested robot had a length of 7.5 mm, a mass of 0.216 g, and could jump 60 times its body size in horizontal distance. The robot could jump while carrying an integrated control system and power source for self-triggered jumping.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Multidisciplinary Sciences
Jonghyun Ha, Yun Seong Kim, Chengzhang Li, Jonghyun Hwang, Sze Chai Leung, Ryan Siu, Sameh Tawfick
Summary: Soft robots have successfully achieved switchable visual contrast and multipixel displays using capillary-controlled robotic flapping fins. This technology is more energy efficient compared to traditional light emitting devices and electronic paper, and it also offers ultralow power consumption, scalability, and mechanical compliance.
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)
