Article
Crystallography
Radhouane Bel-Hadj-Tahar, Mohamed Abboud, Mohd. Shkir, Abdullah Alhanash, Ali Eisa M. Anqi, Noureddine Belhadj Tahar, Mouna Bouzitoun, Mhamed Benaissa
Summary: A novel and simple synthetic sol-gel procedure was established to directly prepare spherical lead titanate powders without prior synthesis/usage of spherical templates. Isotropic submicron particles with a mean diameter of 1-4 μm were prepared in this manner. The study investigated various experimental factors and the formation mechanism of the synthetic process.
Article
Chemistry, Analytical
Xinmeng Fan, Christopher Batchelor-McAuley, Minjun Yang, Samuel Barton, Rosalind E. M. Rickaby, Heather A. Bouman, Richard G. Compton
Summary: This paper presents a new calibration method for the Coulter Counter to accurately measure the calcite content in cells. The method involves measuring and tracking the acid-driven calcite dissolution reaction to determine the amount of calcite in cells.
ANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Manufacturing
Richie Garg, Harish Singh Dhami, Priti Ranjan Panda, Koushik Viswanathan
Summary: The size and shape of metal powder particles are crucial for directed energy deposition (DED) based metal additive manufacturing processes. Unconventional non-spherical metal powders have emerged as a potential alternative feedstock for DED due to their economic advantage. This study investigates the mechanics of carrier-gas driven powder flows for non-spherical metal powders through experiments and numerical simulations, showing that non-spherical powders compare favorably to spherical particles in terms of final concentration distribution and flow mechanics. The results provide insights into suitable process modifications to facilitate the use of non-spherical powders in DED processes.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Chemistry, Multidisciplinary
Igor V. V. Valtsifer, Yan Huo, Valery V. V. Zamashchikov, Artem Sh. Shamsutdinov, Natalia B. B. Kondrashova, Anastasia V. V. Sivtseva, Anna V. V. Pyankova, Viktor A. A. Valtsifer
Summary: In this study, the textural and morphological features of hydrophobic silicon dioxide obtained through hydrolysis and modification were investigated. The size of the particles was controlled by varying the amount of water in the preparation process. The application of spherical-shaped hydrophobic silicon dioxide particles significantly improved the flowability of crystalline hydrates in powder compounds. The developed functional additive based on silicon dioxide particles prevented agglomeration and caking processes, making it suitable for fire-extinguishing powders.
Article
Chemistry, Physical
Zhenhua Fu, Zhenhua Hao, Yusi Che, Yongchun Shu, Jilin He
Summary: A facile method for synthesis of nano-particles attached spherical alloy powders was established based on plasma spheroidization, with in situ synthesized nano-particles attached spherical Ti-6Al-4V powder. The nano-particles are mainly mixtures of AlTi, AlTi3, AlTi2N and TiN with an average size of 85.45 nm, distributed uniformly throughout the surface of spherical Ti-6Al-4V powder. The formation of nano-particles attachment layer is attributed to the vaporization and condensation of raw powder undergoing a steep variation of the temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Multidisciplinary Sciences
Harish Singh Dhami, Priti Ranjan Panda, S. Puneeth, Koushik Viswanathan
Summary: The occurrence of perfectly spherical particle debris during steel abrasion has been a curiosity since the seventeenth century. Previous hypotheses suggest that high local temperatures cause particle ejection, melting, and resolidification. However, our in-depth investigation reveals that the ejected particles are not near the melting point and surface oxidation actually plays a critical role in melting. Complete or partial melting results in spherical particles or 'slivers'. The resulting surface patterns confirm rapid solidification. This research sheds light on an age-old curiosity and provides important insights for various applications.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Max Weiner, Matthias Schmidtchen, Ulrich Prahl
Summary: A new type of composite refractory with the ability to conduct electricity in high-temperature environments is developed within the FOR3010 Refrabund project. To support the development of its material properties and production technology, a new simulation approach is introduced to describe irregularly shaped particles of at least two different phases.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Chemistry, Physical
Vincent Niggel, Maximilian R. Bailey, Carolina van Baalen, Nino Zosso, Lucio Isa
Summary: Tracking the three-dimensional rotation of colloidal particles is vital in understanding the contact interactions between particles under flow and the effects of obstacles and neighboring particles in self-propulsion. In this study, we synthesized rough spherical colloids with randomly distributed fluorescent asperities and developed a new algorithm to track their motion using time series of 2-D images acquired at high frame rates. We successfully validated the algorithm with simulated data and demonstrated its applicability in various experimental conditions, aiming to stimulate further investigations in colloidal systems' rotational dynamics.
Article
Pharmacology & Pharmacy
Beatriz Arauzo, Tania B. Lopez-Mendez, Maria Pilar Lobera, Javier Calzada-Funes, Jose Luis Pedraz, Jesus Santamaria
Summary: Inhalation therapy using a new dry powder azithromycin formulation generated by electrospray showed promising results in terms of particle size, drug release, antibacterial effect, and biocompatibility. The formulation demonstrated effectiveness against bacterial strains and compatibility with lung cell lines, suggesting its potential for respiratory disease treatment.
Article
Materials Science, Multidisciplinary
Cong-Cong Wang, Cheng-Chang Jia, Peng Gao, Guo-Sheng Gai, Yu-Fen Yang
Summary: By modifying polyhedral tungsten powder, spherical tungsten powder with a smaller average diameter can be obtained, where processing time plays a crucial role. The exponential decay model provides a good description of the relationship between average diameter and processing time.
Article
Chemistry, Analytical
Jiasheng Yan, Chuang Wang, Yusheng Fu, Jiuchuan Guo, Jinhong Guo
Summary: This article introduces a disposable Coulter counting analysis kit based on 3D microfluidic printing technology, which improves the accuracy of Coulter cell count analysis and solves the problem of clogging. The kit is convenient, hygienic, and can be widely used in POCT detection scenarios.
Article
Mechanics
D. J. S. Pereira, M. R. O. Panao
Summary: This study synthesizes, criticizes, and compares different models for quantifying photophoretic forces in the slip-flow regime, finding that the Loesche and Husmann model is both simple and accurate. However, more experiments are needed to validate the models, especially considering the effect of high irradiance levels on photophoretic forces. The study also provides a physical interpretation of asymmetry factors in the photophoretic models.
Article
Polymer Science
Giovanni Russo, Marco Lattuada
Summary: Post-synthesis modifications have been used to prepare non-spherical polymer particles with Janus characteristics. By selectively dissolving one face of the Janus colloids, intriguing shapes such as mushroom-like and Janus dimpled particles can be obtained. The composition of the PMMA face and the addition of a cross-linker also affect the particles' morphology. This method provides a new approach for controlling the shape of polymer particles.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Mechanics
Harinadha Gidituri, Alois Wurger, Kevin Stratford, Juho S. Lintuvuori
Summary: In this study, dynamics of a spherical colloidal particle pulled along the fluid-fluid interface were investigated using lattice Boltzmann simulations. Results showed that hydrodynamic drag decreases and particle rotation increases when the particle is more in the low viscosity fluid.
Article
Energy & Fuels
Shanbi Peng, Yun Zhang, Wanwei Zhao, Enbin Liu
Summary: This study analyzed the impact of rectifier blockages on flow rate measurement during shale gas extraction, finding that blockages were more likely to occur within a certain velocity range. Experimental verification led to the proposal of increasing the straight pipe length to restore flow field stability, providing a reference for setting the distance between the rectifier and the flowmeter.
Article
Engineering, Chemical
Shiyu Sun, Miao Chen, Xuan Dao, Li Wang, Xin Huang, Lina Zhou, Hongxun Hao
Summary: The 0D/1D Bi2O3@TNTs composites designed and synthesized in this study show high surface area and special morphology, and can efficiently remove U(VI) and Tc. The composites exhibit excellent adsorption capacity and stability, and have a good removal effect on U(VI) and Tc in wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Materials Science, Multidisciplinary
Wenbo Wu, Kui Chen, Ting Wang, Na Wang, Xin Huang, Lina Zhou, Zhao Wang, Hongxun Hao
Summary: Organic crystals with both flexibility and stimuli-responsive properties are promising as smart materials for various applications. This review summarizes the flexible crystals that display remarkable deformation and stimuli-responsiveness, explores their response mechanisms and structure-property relationships, and discusses strategies for designing flexible organic crystals with stimuli-responsive properties. The challenges and future outlook in this field are also discussed.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Crystallography
Xiaoyang Yan, Na Wang, Xiongtao Ji, Yaoguang Feng, Jun Li, Ting Wang, Xin Huang, Hongxun Hao
Summary: To obtain crystal products with ideal morphology and better quality, it is important to understand the affecting mechanism of solvents on crystal morphology. This study investigates the interactions between solvent/solute molecules and different crystal faces of pyriproxyfen through experiments and molecular simulations. The results reveal that the choice of solvent affects the crystal morphology, with methanol and ethanol leading to lamellar crystal growth, while n-butanol and n-heptane leading to three-dimensional shuttle crystal growth. The findings provide insights into the growth mechanism and can contribute to the optimization of pyriproxyfen crystal products.
Article
Engineering, Chemical
Xiongtao Ji, Jingkang Wang, Ting Wang, Yunhai Huang, Bugui Zhao, Na Wang, Xin Huang, Hongxun Hao
Summary: In this study, the motion behavior of particles and its effect on colloidal stability were systematically studied and characterized at multiple stages and multiple scales through surface analysis of the nanocrystal, thermodynamic derivation, zeta potential measurements, and rheological studies. The interaction and motion behaviors of particles were further discussed through theoretical model calculations, and the destruction of the colloidal suspension was investigated and analyzed.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Kui Chen, Wenbo Wu, Hongtu Zhao, Yiwei Wei, Shanshan Zhu, Xin Huang, Na Wang, Ting Wang, Hongxun Hao
Summary: By utilizing a cocrystal strategy, a brittle, photo-driven dynamic crystal was successfully transformed into flexible dynamic crystals, improving both fluorescence and photo-response properties. The research found that the cocrystals exhibit rare 2D elastic bending and twistable deformation properties, which have not been observed in cocrystals before. Through crystallographic analysis, experimental tests, and theoretical calculations, the mechanisms behind these properties were determined. Furthermore, a flexible photo-controlled switch was designed and tested based on the multiple flexibilities of the cocrystals.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Beiqian Tian, Hongxun Hao, Xin Huang, Ting Wang, Jingkang Wang, Jinyue Yang, Xin Li, Wenlei Li, Lina Zhou, Na Wang
Summary: The choice of solvents is crucial for manipulating polymorphic outcomes in pharmaceutical crystallization. This study investigated the solvent effect on molecular conformational evolution and polymorph control of cimetidine. The results showed that the conformers selected in crystals significantly influenced crystal packing and polymorph stability. The interaction strength of cimetidine with solvents was found to affect desolvation difficulty, conformational rearrangement, and final polymorphic outcome.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Mingzhe Tan, Xin Huang, Wenxi Song, Ting Wang, Na Wang, Xue Bai, Qin Wang, Hui Yu, Lina Zhou, Hongxun Hao
Summary: The effects of polyethylene glycol (PEG) and polyvinylpyrrolidone (PVP) on the nucleation and crystal growth kinetics of acephate were systematically investigated in this study. It was found that PEG and PVP with different molecular weights had differential effects on the primary and secondary nucleation of acephate. Furthermore, micromolar concentrations of PEG were found to substantially promote crystal growth.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Crystallography
Guangyan Li, Ting Wang, Xin Huang, Na Wang, Lina Zhou, Beiqian Tian, Ziwei Feng, Ailing Liu, Yaling Li, Hongxun Hao
Summary: A comprehensive crystal structure analysis of fluralaner was conducted to study the thermodynamic stability, phase transformation, and selective nucleation mechanisms of different polymorphs. Various analytical techniques were used to characterize Form I, Form II, and Form III, revealing structural similarity between Form I and Form III but unique molecular conformation and packing pattern in Form II. The thermodynamic stability order was found to be Form II > Form I > Form III and the selective nucleation of similar structures was affected by the addition of n-hexane.
Review
Chemistry, Multidisciplinary
Jiawei Zhao, Na Wang, Jingkang Wang, Xiongtao Ji, Jun Li, Ao Li, Xin Huang, Ting Wang, Lina Zhou, Hongxun Hao
Summary: Crystal growth is a crucial step in the crystallization process, determining the size and habit of the final crystals. Enhancing crystal growth, particularly for macromolecules, can be challenging. This study systematically reviews process intensification technologies and strategies for crystal growth, discussing their effects on crystal morphology, growth rate, and particle size distribution. The advantages, limitations, and promising perspectives of various intensification methods are compared and described.
Article
Chemistry, Multidisciplinary
Hongtu Zhao, Xiunan Zhang, Kui Chen, Wenbo Wu, Shuyu Li, Ting Wang, Xin Huang, Na Wang, Lina Zhou, Hongxun Hao
Summary: Flexible crystals have significant potential as smart materials, but designing them with specific properties remains challenging due to a lack of established design standards. This study presents two Schiff-based molecules and their polymorphs, which exhibit different photophysical and mechanical properties due to distinct molecular stacking arrangements. The fluorescence properties of these molecules are diverse, with different emission wavelengths. The elasticity of one molecule is superior to another, while two other molecules show plastic and brittle behavior, respectively.
Article
Materials Science, Multidisciplinary
Zhicheng Jiang, Hongtu Zhao, Wenbo Wu, Kui Chen, Hui Yu, Ting Wang, Xin Huang, Na Wang, Lina Zhou, Hongxun Hao
Summary: This study reports three polymorphs of (Z)-3-(4-formylphenyl)-2-(4-methoxyphenyl)acrylonitrile with distinct multi-stimuli responsive behaviors. Form I demonstrates the integration of reversible elastic and irreversible plastic bending and twisting deformations depending on crystal faces and external forces. Form II undergoes crystal-to-crystal transformation to Form III via grinding, accompanied by fluorescence switching and decreased emission intensity. Additionally, [2+2] cycloaddition under UV illumination triggers photochromism and photomechanical motions for Form II.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Mukaidaisi Taiwaikuli, Ting Wang, Kui Chen, Yaoguang Feng, Jiangna Xing, Xin Huang, Na Wang, Lina Zhou, Hongxun Hao
Summary: This study investigated the solvation behaviors of arbutin through experimental investigations and theoretical calculations. Six solid forms of arbutin were obtained and characterized using various spectroscopy techniques. The analysis of crystal structures revealed the flexibility of arbutin conformations and the correlations between crystal lattice energy and thermal stability of different solvates. The formation mechanism and conversion relationship of arbutin solvates were proposed and rationalized.
Article
Engineering, Chemical
Yunhai Huang, Na Wang, Jingkang Wang, Xiongtao Ji, Jinyue Yang, Xin Huang, Lina Zhou, Ting Wang, Hongxun Hao
Summary: This study theoretically screened specific solvents to regulate the liquid-liquid phase separation (LLPS) phenomenon. The mechanism of selective solvation suppression was revealed through quantitative analysis and experimental research, and the evolution process of self-assembly in the nucleation pathways was explored. It was found that clusters with a core-shell structure may be the key to the occurrence of LLPS.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Chemistry, Multidisciplinary
Jingchen Sui, Na Wang, Jingkang Wang, Xin Huang, Ting Wang, Lina Zhou, Hongxun Hao
Summary: This review comprehensively summarizes the latest developments in the main enantioseparation methods, focusing on significant cases involving crystallization, deracemization, and membranes. It also highlights potential trends and future directions based on state-of-the-art coupling strategies.
