Article
Chemistry, Multidisciplinary
Asma'u I. Gebi, Oleksandr Dolokto, Liuda Mereacre, Udo Geckle, Hannes Radinger, Michael Knapp, Helmut Ehrenberg
Summary: There is growing interest in solid-state electrolytes due to their promising properties, making them key to the future of battery technology. This study investigates a time efficient alternative processing route for the synthesis of a promising sodium solid electrolyte, and demonstrates its stability and high conductivity.
Article
Pharmacology & Pharmacy
Binyi Wang, Xiaolin Wang, Yunjing Zhu, Tian Yin, Jingxin Gou, Yanjiao Wang, Haibing He, Yu Zhang, Xing Tang
Summary: This study successfully prepared nimodipine amorphous nanopowder (NMD-NAP) to improve the solubility and dissolution rate of insoluble drugs by reducing the particle size and preparing the drug into an amorphous form. The results showed a significant increase in dissolution rate, indicating the synergistic effect of nano size and amorphous form.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2022)
Article
Chemistry, Physical
Yuecun Wang, Jun Ding, Zhao Fan, Lin Tian, Meng Li, Huanhuan Lu, Yongqiang Zhang, En Ma, Ju Li, Zhiwei Shan
Summary: The study reveals an unusual tension-compression asymmetry in submicrometre-sized samples of isotropic amorphous silicon, with the reduction in shear modulus and densification of shear-activated configuration under compression leading to abnormal asymmetry in yield strength and anelasticity.
Article
Materials Science, Multidisciplinary
Mahmoud Ahmad, K. A. Aly, A. Dahshan, Y. Saddeek, Hesham M. H. Zakaly, A. M. Abd Elnaeim, Antoaneta Ene
Summary: The influence of Bi concentration on the thermal parameters of binary BixSe100-x glasses, such as glass transition temperature (T-gl) and crystallization temperature (T-pc), was experimentally studied. The increase in Bi content resulted in an increase in both T-gl and T-pc, leading to an increase in the activation energy values for glass transition (EGl) and crystallization (Epc). Various methods were used to estimate the activation energies and a good correlation between T-gl and T-pc was observed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Multidisciplinary
Neng Li, Jiahe Peng, Peng Zhang, Yuanzheng Yue
Summary: Recently, novel amorphous nanomaterials with atomic irregular arrangement factors have been successfully fabricated, exhibiting superior performance in catalysis, energy storage, and mechanics. Among them, 2D amorphous nanomaterials have gained significant attention due to their combination of 2D structure and amorphous characteristics. While numerous studies have been conducted on 2D amorphous materials, research on MXenes mainly focuses on their crystalline forms, with limited investigations on highly disordered forms. This work provides insight into the amorphization of MXenes and discusses the potential applications of amorphous MXenes materials.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Mingying Xiao, Huabing Gao, Laibo Sun, Zhen Wang, Guorui Jiang, Qingsen Zhao, Chunhuan Guo, Liyu Li, Fengchun Jiang
Summary: The new ultra-high-speed laser cladding technique can produce Fe-based coatings with a high content of amorphous structure. By adjusting the scanning speed and powder feeding rate, the microstructure and properties of the coatings can be altered. Thinner coatings have higher amorphous content, reduced cracks, and better metallurgical bonding with the substrate.
Article
Energy & Fuels
Patricio Serafini, Pablo P. Boix, Eva M. Barea, Tomas Edvinson, Sandy Sanchez, Ivan Mora-Sero
Summary: Flash infrared annealing method can enhance the crystal growth of polycrystalline halide perovskite films, reduce defects and improve the optoelectrical performance of the films. Higher heating rates during annealing can result in lower defect densities and improved performance, with the added advantage of shorter processing time.
Article
Pharmacology & Pharmacy
Yannick Guinet, Laurent Paccou, Alain Hedoux
Summary: Designing co-amorphous formulations is an effective strategy to improve the bioavailability of low-molecular-weight drugs. This study focused on analyzing the thermal stability of co-amorphous blends of indomethacin and amino acids, in order to understand the stabilization mechanism of the drug in its amorphous state. The results revealed the surprising capability of L-arginine to enhance the stability of amorphous indomethacin by strengthening its H-bond network.
Article
Multidisciplinary Sciences
T. H. Lee, S. R. Elliott
Summary: This study investigates the concept of hypervalency in amorphous chalcogenide materials using ab initio molecular-dynamics simulations, establishing a unified conceptual framework for understanding chemical bonding, microscopic structures, and structure-property relationships.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Zhang Jianxing, Feng Zongyu, Song Jianhui, Zhang He, Yang Juanyu, Wang Ning, Chen Fang, Du Lei, Huang Xiaowei
Summary: Yttria-stabilised zirconia (YSZ) powder with a particle size of 130 nm was obtained through high-energy ball milling, leading to an increased specific surface area of 22 m2 g-1 and improved sinterability and ionic conductivity. The milling process induced the decomposition of YSZ crystallites into irregular shapes with various defects, ultimately enhancing the oxygen defects and conductivity of the material.
CERAMICS INTERNATIONAL
(2021)
Article
Food Science & Technology
Rubina Rumler, Denisse Bender, Sofia Speranza, Johannes Frauenlob, Lydia Gamper, Joost Hoek, Henry Jager, Regine Schonlechner
Summary: Climate change may lead to widespread cultivation of sorghum in Western countries; sorghum is rich in health-promoting nutrients; research shows that using stone and roller milling systems can successfully produce chemically and physically distinct sorghum flour fractions, providing new options for future food applications.
Article
Nanoscience & Nanotechnology
Kazuki Uchida, Takahiro Ohkubo, Futoshi Utsuno, Koji Yazawa
Summary: Li7P3S11 glass ceramics with modified composition were prepared via two-step mechanical milling and thermal annealing, showing enhanced conductivity after ball-milling and thermal annealing. Analysis using P-31 solid-state nuclear magnetic resonance spectroscopy revealed the existence of an additional PS43- unit in the Li7P3S11 phase.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Medicine, Research & Experimental
Bo Liu, Frank Theil, Kristin Lehmkemper, David Gessner, Yanxia Li, Holger van Lishaut
Summary: This study outlines the risk assessment of API crystallization in packaged ASD drug products and a mitigation strategy. It discusses the allocation of shelf-life crystallization risk and respective mitigation steps for different drug product development scenarios, as well as the scientific principles and physical stability modeling of ASD drug products during shelf-life storage.
MOLECULAR PHARMACEUTICS
(2021)
Article
Engineering, Chemical
Qiao Chen, Yuanhui Ji
Summary: In this study, the effects of temperature, relative humidity, and polymeric excipients on the phase behavior of amorphous irbesartan and oxaprozin were systematically investigated. It was found that polyvinylpyrrolidone (PVP) can better inhibit the recrystallization of irbesartan, while poly(vinylpyrrolidone-co-vinyl acetate) (PVPVA46) can better maintain the amorphous form of oxaprozin. The molecular interaction mechanism of amorphous solid dispersions (ASDs) was explained through calculations of electrostatic potential and binding energies using density functional theory (DFT).
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Materials Science, Ceramics
Yong Liu, Weixuan Zeng, Yongjin Ma, Rui Dong, Pengfei Tan, Jun Pan
Summary: An oxygen-deficient amorphous Ta2O5 nanoparticle photocatalyst was synthesized through a solvothermal method and thermal annealing in Ar atmosphere, exhibiting improved hydrogen evolution activities compared to pristine and commercial Ta2O5. The enhanced performance is attributed to the existence of oxygen defects in the samples, facilitating the separation and migration of photogenerated carriers and reducing recombination probabilities.
CERAMICS INTERNATIONAL
(2021)
