Article
Thermodynamics
Peixun Yu, Yu Wang, Ritian Ji, Hui Wang, Junqiang Bai
Summary: The study shows that metal foam structures with skeleton micropores have higher pressure drops compared to those without micropores at different velocities. Additionally, the flow characteristics in the three orthogonal Cartesian axes exhibit obvious anisotropy in both types of structures.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Nang X. Ho, Truong V. Vu, Binh D. Pham
Summary: The study presents numerical simulation results of an axisymmetric compound drop solidifying on a cold plate, showing that the solid-liquid interface solidifies first around the inner gas core and last at the drop top. The presence of an inner gas bubble prolongs the solidification time, with the solidification time decreasing with an increase in Stefan number or Bond number.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Chemistry, Multidisciplinary
Shujing Huang, Min Ji, Yong Wang, Ye Tian
Summary: In this study, the anisotropic elongated octahedral DNA origami frames with non-specific connections were crystallized to form simple cubic and simple tetragonal superlattices. This work deepens the understanding of geometry-guided crystallization of DNA origami shapes and provides a new path for constructing three-dimensional functional devices with simple design.
Article
Environmental Sciences
Yung-Li Wang, Qun-Zhan Huang, Shao-Yiu Hsu
Summary: Understanding the displacement of resident wetting fluid in porous media is essential for effective remediation strategies. This study used direct numerical simulation (DNS) to simulate the displacement of resident wetting fluid by invading wetting fluid in porous media. The effects of non-wetting fluid on displacement were evaluated, which is difficult to achieve in laboratory experiments. The simulation also demonstrated the impact of interfacial tension, contact angle, and injection rate on immiscible fluid-fluid flow patterns.
Article
Engineering, Mechanical
Jingjing Liu, Yong Wang, Zhicheng Yuan
Summary: Pattern texturing has been proven to enhance water repellency on hydrophobic surfaces. In this study, the effect of pattern profile on dynamic wetting state is investigated numerically. Trapezoid topography is found to effectively prevent wetting, and masking groove side-walls with superhydrophobic patterns can result in a stable dry surface.
JOURNAL OF FLUIDS AND STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Shujing Huang, Min Ji, Yong Wang, Ye Tian
Summary: In this study, we successfully crystallized anisotropic elongated octahedral DNA origami frames into highly ordered superlattices using non-specific connections, providing a new approach for building three-dimensional functional devices with simple design.
Article
Engineering, Environmental
Hyemin Lee, Yoon Ji Seo, Jaekyoung Kim, Myung Jun Bae, Seokhoon Hwang, Jung Gun Bae, Won Bo Lee, Hyunsik Yoon
Summary: This study proposes a scheme of functional transformation of a polymeric film by changing the surface shape. By replicating swollen hydrogel shapes, stress dissipation or superomniphobic functions can be achieved in functional materials.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Manufacturing
Yunji Qiu, Xiaofeng Niu, Tingting Song, Mengqing Shen, Wenqi Li, Wenliang Xu
Summary: Selective laser melting (SLM) is an advanced manufacturing technology that uses a laser to melt metal powders directly into metal parts. This study utilized smoothed particle hydrodynamics (SPH) method to simulate the SLM process and analyze the effects of different laser powers on the size of the molten pool. The results showed that the SPH method is a promising way to simulate the SLM process effectively.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Engineering, Environmental
Chaojun Jia, Fanlei Chen, Qiang Zhang, Jianyong Gu, Jing Hu, Hongjie Chen, Wei Cheng
Summary: A large-scale centrifuge modeling study was conducted to examine the relationship between the deformation characteristics of the accumulation body and the water level drop during the reservoir impoundment process. The results showed that water level drop led to significant deformation and failure, with the formation of tensile cracks and the collapse of fault zones. Pore pressure and earth pressure also changed during reservoir impoundment and water level drop processes, but their impact on slope stability weakened with the decrease of water level.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2023)
Article
Chemistry, Physical
Q. Legrand, S. Benayoun, S. Valette
Summary: This study investigates the anisotropic wetting on textured surfaces. Three stripe-like textures with different heights were created using three different polymers. The contact angle in all directions was measured using a lab-built goniometer. Two different behaviors, correlated to the wetting state, were observed. The Wenzel state showed strong anisotropy, with the contact angle following a Gaussian evolution. The Cassie-Baxter state, on the other hand, exhibited no anisotropy, with the contact angle remaining constant and close to the predicted value. This study deepens our understanding of droplet anisotropy by linking it to surface textures and chemistry.
APPLIED SURFACE SCIENCE
(2023)
Article
Mechanics
J. Pratt, A. Busse, W-C Mueller
Summary: This study investigates the influence of a magnetic field on anisotropic magnetohydrodynamic (MHD) turbulence using direct numerical simulations. The results show that the diffusion curves of single particles exhibit mildly superdiffusive behaviors in different directions. The dispersion of particle pairs is affected by competing alignment processes, especially at the beginning of the inertial subrange. The observed scaling for relative dispersion is steeper than the Richardson prediction, particularly at larger Reynolds numbers.
JOURNAL OF FLUID MECHANICS
(2022)
Article
Thermodynamics
Chongyan Zhao, Xiao Yan, Wen He, Zhiyong Huang, Hanliang Bo, Feng Chen, Nenad Miljkovic
Summary: Dropwise condensation has attracted extensive interest due to its potential in enhancing power generation, water harvesting, and thermal management systems. Microscale-confined condensation (MCC) presents a promising method to overcome the limitations of dropwise condensation by decoupling droplet nucleation and growth from condensate removal. MCC achieves this by enabling spontaneous condensate transfer and limiting the maximum droplet size. Through numerical simulations, it is found that smaller surface gaps and smaller condensing surface contact angles are favorable for achieving higher heat transfer rates in pure vapor condensation conditions.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Energy & Fuels
Xiao Zhuo, Xiangjun Liu, Xiangchao Shi, Lixi Liang, Jian Xiong
Summary: By conducting true triaxial compression tests using numerical simulation, this study reveals that the mechanical responses of layered rocks are either controlled by the rock matrix or dominated by the weak plane, exhibiting three different types associated with the orientations of the weak plane.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Mechanics
Wentao Zhan, Hui Zhao, Xiang Rao, Yuyang Liu
Summary: This paper applies the generalized finite difference method (GFDM) to solve compressible two-phase flow in anisotropic porous media. The effectiveness and generality of GFDM are verified through various examples, and the sensitivity of the influence domain radius to the calculation accuracy is analyzed.
Article
Engineering, Chemical
Letao Shan, Yu Song, Shihe Zhou, Gangtao Liang
Summary: This paper investigates the interfacial evolution and dynamic features of a single droplet impact onto a radially flowing liquid film. The results show that the droplet impact produces a larger crown radius compared with a unidirectional film. Increasing the impact velocity leads to increases in crown height and upstream radius, while the effect on downstream radius is weak. Increasing the flow rate of the film results in changes in the secondary droplet number and finger jets associated with the crown splashing.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Wenjing Tan, Chunmei Gao, Shifeng Ji, Yunqing Xing, Yi Guo, Baogui Liang
Summary: Membrane separation technology is widely used in wastewater treatment due to its cost-effectiveness and productivity. However, organic membrane fouling caused by humic acid is a major barrier to its further development. This study successfully addressed this issue through the production of composite materials and self-cleaning membranes, providing beneficial strategies and solutions for membrane contamination problems.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Qichang Peng, Qingdong Ruan, Bin Wang, Jinyuan Liu, Chao Huang, Xingwang Zhu, Dan Li, Liangliang Liu, Yinchuan Wang, Xiaolin Zhang, Jia Yan, Paul K. Chu, Hui Xu
Summary: The escalating issue of water pollution has led to significant attention in the field of photocatalysis. In this study, OV-Sb2WO6-X photocatalyst with oxygen vacancies was synthesized, which exhibited enhanced charge separation efficiency and improved photocatalytic activity. The introduction of oxygen vacancies was successfully controlled and characterized, and the modified photocatalyst showed superior degradation efficiency for dye wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wangcheng Zhang, Cunchuan Zheng, Hu Xie, Weichao Du
Summary: By using a specific curing agent ETB, the problem of dispersion and stability for oily epoxy resin in cement slurry system has been successfully solved. The application of the emulsified curing agent ETB in oilfield cement slurry system shows good rheological performance, resistance to high temperature and high pressure water loss, and corrosion resistance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
O. I. Krivonos, A. Babenko, O. B. Belskaya
Summary: This study synthesized biochar based on sapropel and investigated the effects of chemical modification on its textural characteristics, acid-base properties, and adsorption properties. The results showed that the chemical modification increased the fraction of micropores, specific surface area, and changed the surface properties of biochar. The experiment also revealed that biochar pretreated with alkali exhibited the maximum adsorption capacity for copper ions. A conceptual model identifying the mechanisms of copper adsorption on sapropel-based biosorbent was proposed.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
H. Lachhab, N. Benzbiria, A. Titi, S. Echihi, M. E. Belghiti, Y. Karzazi, A. Zarrouk, R. Touzani, C. Jama, F. Bentiss
Summary: The corrosion inhibitory potency of two new pyrimidine-pyrazole derivatives, PPA and PPC, was evaluated for mild steel in 1 M HCl. The results showed enhanced inhibition activities with increased concentration, reaching maximal values of 91.15% and 92.39% for PPA and PPC, respectively. However, the mitigation potency decreased with increasing temperature. SEM and XPS analysis revealed that PPA and PPC adsorbed on the mild steel surface, forming a shielding layer that prevented the dissolution of the steel in the acidic solution.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Shanmugapriya Sivalingam, D. Jeya Sundara Sharmila, Goutham Golla, Lakshmanan Arunachalam, Tarunendu Singh, G. Karthikeyan, A. Shanthi, Kannan Malaichamy
Summary: This study aims to develop a nano-biofungicide comprising of volatile essential oil molecules to enhance its efficacy in the field of agriculture through easily scalable green synthesis technique. The nano biofungicide was prepared through one pot hot melt ultrasonication technique with easy water dispersibility and long term stability. The physico-chemical analysis revealed that, nano bio-fungicides were amorphous sphere-shaped nanoparticles with low melting point. The encapsulation efficiency of major components of essential oil was determined, and it was found that they followed Higuchi model of release kinetics. The essential oil loaded nanostructured lipid carrier showed significantly higher mycelial growth inhibition compared to pure essential oil, indicating enhanced bio-efficacy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yinlong Li, Yingqing Zhan, Yiwen Chen, Hongshan Jia, Ximin Chen, Fei Zhu, Xulin Yang
Summary: In this study, ZnO quantum dots decorated MXene nanosheets were used as a functional filler for waterborne epoxy coating. The improved dispersion and synergy of ZnO QDs and MXene nanosheets enhanced the anticorrosion performance of the coating.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Fucheng Guan, Jing Tao, Qiang Yao, Zheng Li, Yihang Zhang, Shi Feng, Jianbin Sun, Qiang Yang, Xuecui Song, Jing Guo, Yuanfa Liu
Summary: This paper presents a method for preparing adsorbent materials based on biomass that can efficiently adsorb methylene blue. The experimental results show that the material has a hierarchical structure, high adsorption capacity, and reusability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Pengfei Hu, Zuli Mo, Weiliang Wang, Chengzhe Li, Zhaojia Guo, Guanqing Lin, Zhimin Guo
Summary: This study developed a novel in-situ particle vision and measurement (PVM) system to investigate heterocoagulation between coarse and fine particles in mineral processing. The experimental results showed that the degree of heterocoagulation decreased with increasing pH and stirring speed. Furthermore, under certain hydrodynamic conditions, coal particles were more distributed at the rear of the glass bead.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Tanveer ul Haq Zia, Anwar ul Haq Ali Shah, Behisht Ara, Kashif Gul
Summary: A label-free immunosensor for detection of hepatitis C core antigen was fabricated using a ternary nanocomposite based on polypyrrole, silver doped zinc oxide, and exfoliated graphene. The immunosensor demonstrated low detection limit, high selectivity, and stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoyan Feng, Jiachen Li, Lijun Liang, Linli Zhu, Sa Liu, Li Ren
Summary: In this study, polystyrene divinylbenzene microspheres were surface-modified by poly(carboxybetaine methacrylate) to develop an efficient hemoperfusion adsorbent for the removal of protein-bound toxins. The modified microspheres showed increased adsorption capacity and better biocompatibility, making them promising for clinical hemoperfusion therapy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoye Bi, Dong Xue, Yunpeng Wang, Chencheng Lv, Zexiong Li, Tao Zhao
Summary: This research aimed to develop a durable and formaldehyde-free flame retardant treatment for cotton fabrics. The results demonstrated successful grafting of phosphorous acid (PA) onto cotton fabrics, leading to enhanced flame resistance while maintaining the desired fabric characteristics.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Ruolin Wang, Wenjuan Sun, Haisheng Han, Dongping Tao
Summary: This study finds that Al-starch colloidal depressants can effectively inhibit the flotation of ultrafine calcite and chlorite, and increase the grade of valuable minerals. The chemisorption of Al-starch on mineral surface changes the functional group peaks and generates new O-Al functional groups.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wondimu K. Wakejo, Ali Maged, Beteley T. Meshesha, Joon W. Kang, Abayneh G. Demesa, Sandip Chakrabarti, Thallada Bhaskar, Ashok Kumar Gupta, Amit Bhatnagar
Summary: Simultaneously removing different pharmaceutical pollutants from wastewater is an important environmental issue, and the use of a system that can remove multiple contaminants at once is necessary. Functionalized biochar (FBC) has been found to be effective in simultaneously removing acetaminophen and ciprofloxacin and other pharmaceutical pollutants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yu Wang, Fengwen Yan, Jie Wu, Zhijun Huang, Liuting Song, Shunda Yuan
Summary: In this study, Cu single atoms are anchored on the external surface of g-C3N4 nanofibers to maximize atom utilization. This catalyst exhibits excellent Fenton-like catalytic activity and good stability due to the full utilization of Cu active sites.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)