Article
Physics, Applied
Heng Kang, Ji Wang, Yanhui Zhang, Zijing Li, Shidong Feng, Juntao Huo, Li-Min Wang
Summary: Glass formation is crucial for understanding glass transition and designing new bulk metallic glasses. By combining experiments and simulations, this study explores the mystery of glass-forming ability from the perspective of vibrational entropy in Zr-Cu alloys. The results reveal that excess vibrational entropy in crystalline states and low-frequency vibration modes can disclose the underlying physics of good glass formers, providing guidance for more efficient composition design of novel glasses.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Pharmacology & Pharmacy
Ivo B. Rietveld, Hiroshi Akiba, Osamu Yamamuro, Maria Barrio, Rene Ceolin, Josep-Lluis Tamarit
Summary: The phase relationships between form I, II, and III of benzocaine were investigated using adiabatic calorimetry, powder X-ray diffraction, and high-pressure differential thermal analysis. It was found that form I is the stable low-temperature, high-pressure form and the most stable form at room temperature. However, due to its persistence at room temperature, form II is still the most convenient polymorph to use in formulations. Form III does not possess any stability domain in the pressure-temperature phase diagram. Heat capacity data for benzocaine were obtained, which can be used for crystal structure prediction.
Article
Chemistry, Physical
Oluwatoyin E. Jegede, Nafisul Haque, Andrew M. Mullis, Robert F. Cochrane
Summary: Cu-50% Co and Cu-68.5% Co metastable monotectic Cu-Co alloys were rapidly solidified under nitrogen atmosphere. Liquid phase separation and dendritic structures were observed. Regression relationship between cooling rate and SDAS measurements was established.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Chemistry, Multidisciplinary
Yuliang Yuan, Zhilong Yang, Wenchuan Lai, Lei Gao, Mengfan Li, Jiawei Zhang, Hongwen Huang
Summary: Intermetallics, characterized by long-range atomic ordering, well-defined stoichiometry, and controlled crystal structure, have attracted increasing attention in the area of chemical synthesis and catalytic applications. Liquid-phase synthesis of intermetallics is seen as a promising methodology due to its precise control over size, shape, and resistance toward sintering compared with traditional metallurgy. This short review provides perspectives on the liquid-phase synthesis of intermetallics in terms of thermodynamics and methodology, as well as its applications in various catalytic reactions.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Review
Materials Science, Multidisciplinary
Huai-Jun Lin, Yan-Shan Lu, Liu-Ting Zhang, Hai-Zhen Liu, Kaveh Edalati, Adam Revesz
Summary: In this review, recent advances in the study of metastable alloys for hydrogen storage applications are comprehensively reviewed. The synthesis methods and hydrogen storage properties of metastable alloys are summarized and discussed, highlighting their unique kinetics and thermodynamics properties. For example, Mg-based amorphous and nanoglass alloys exhibit superior hydrogenation kinetics and higher hydrogen storage capacity, while the immiscible Mg-Mn and Mg-Zr alloys show destabilized thermodynamics properties.
Article
Chemistry, Physical
Xue Mei, Tong Wang, Min Chen, Limin Wu
Summary: This study presents a self-adaptive film that enables highly efficient radiative cooling and heating, which is suitable for applications in different geographic locations and various weather conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Physics, Multidisciplinary
Thomas B. Shiell, Li Zhu, Brenton A. Cook, Jodie E. Bradby, Dougal G. McCulloch, Timothy A. Strobel
Summary: Bulk, highly oriented, crystalline 4H hexagonal silicon (4H-Si) was successfully synthesized through a metastable crystalline transition pathway by heating the single-crystalline Si-24 allotrope. The resulting 4H-Si crystallites exhibit an orientation relationship with the Si-24 crystals, indicating a structural relationship between the two phases. Optical absorption measurements confirm that 4H-Si has an indirect band gap near 1.2 eV, in agreement with first principles calculations.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Alessia Villois, Umberto Capasso Palmiero, Prerit Mathur, Gaia Perone, Timo Schneider, Lunna Li, Matteo Salvalaglio, Andrew deMello, Stavros Stavrakis, Paolo Arosio
Summary: This study provides an experimental and theoretical framework to investigate the thermodynamics and kinetics of liquid-liquid phase separation. It leverages droplet microfluidics to accurately measure the volume of the dense phase and predicts and validates kinetic barriers associated with the formation of a dense droplet.
Article
Materials Science, Multidisciplinary
K. Wieczerzak, A. Sharma, C. Hain, J. Michler
Summary: This work reviews the available phase selection rules and validates them using a database of CuTiZr alloys. The importance of considering phase transformation kinetics and synthesis method on an alloy's final structure is discussed, along with the challenges of using phenomenological alloying guidelines. It is shown that interpreting the available phase selection criteria without caution can lead to the design and fabrication of alloys with undesired phases.
MATERIALS & DESIGN
(2023)
Article
Mechanics
M. Gallo
Summary: This work theoretically investigates the thermal fluctuations of fluid in metastable conditions, revealing that capillarity strongly modifies the fluctuation statistics with increasing fluid metastability and showing a remarkable difference with simple fluid description at nanoscopic scales.
Article
Biochemistry & Molecular Biology
Aisha Fahim, Onofrio Annunziata
Summary: The addition of small amounts of HEPES near physiological ionic strength is essential for converting protein-rich droplets into compact tetragonal crystalline microparticles, which exhibit small size, narrow size distribution, and guest-binding properties. The interactions between lysozyme and HEPES were found to be weakly attractive and exothermic. These findings suggest that salting-in type additives play an important role in controlling the fate of metastable protein-rich microdroplets.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Physics, Multidisciplinary
Michikazu Kobayashi, Naoko Nakagawa, Shin-ichi Sasa
Summary: The violation of the assumption of local equilibrium thermodynamics for phase coexistence in heat conduction is numerically analyzed using the Hamiltonian Potts model in two dimensions. It is observed that the temperature of the interface between ordered and disordered states deviates from the equilibrium transition temperature, indicating the stabilization of metastable states by the influence of a heat flux. Furthermore, it is found that the deviation can be described by a formula proposed in an extended framework of thermodynamics.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Junlei Qi, Yongping Dai, Chen Ma, Chengxuan Ke, Wenbin Wang, Zongxiao Wu, Xiang Wang, Kai Bao, Yue Xu, Haoxin Huang, Lingzhi Wang, Jingkun Wu, Guangfu Luo, Ye Chen, Zhaoyang Lin, Qiyuan He
Summary: A surfactant-free liquid-phase synthesis method for high-quality 2D tellurium has been developed, and a unique growth mechanism based on atomic escape and guided 2D growth in the liquid phase has been proposed. The as-grown 2D tellurium nanosheets exhibit excellent properties and show potential for various applications.
ADVANCED MATERIALS
(2023)
Article
Acoustics
Dui Qin, Qingqin Zou, Shuang Lei, Wei Wang, Zhangyong Li
Summary: The study modified the classical nucleation theory to better describe the ADV nucleation process for PFC nanodroplets, finding that the properties of nanodroplets have a significant impact on the nucleation threshold. By designing appropriate droplets, it is possible to reduce the ADV nucleation threshold.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Physical
Zihui Dong, Dmitry Sergeev, Michael F. Dodge, Francesco Fanicchia, Michael Mueller, Shiladitya Paul, Hongbiao Dong
Summary: The study on CoCrFeMoNi high entropy alloys reveals their potential for high temperature coating applications, with phase transitions and structural characteristics providing key information for the development of similar thermal spray HEA coatings.