Article
Chemistry, Physical
Dev Gurera, Bharat Bhushan
Summary: Gas bubbles are typically formed under liquids, and the movement of these bubbles can be facilitated by liquids with high surface tension and density, which increase the Laplace pressure gradient force and buoyancy force respectively.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Dege Li, Jianchao Li, Kaixin Wang, Guodong Yang, Yi Cao, Bingfang Huang, Xinlei Wu, Qiang Sun, Chi Ma, Lilong Zhao, Peng Liu, Yonghong Liu, Yanzhen Zhang
Summary: Researchers have developed an efficient dry-jet wet spinning and encapsulating system for preparing functional fibers using modified anti-Rayleigh-Plateau-Instability sodium alginate solution filament and homemade piezoelectric ejector. This system allows for the fabrication of fibers with various sizes and intervals and the encapsulation of functional reagents with different sizes and shapes. It demonstrates potential applications in drug delivery, cell encapsulation, and culture.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Physics, Multidisciplinary
Ch Rozina, B. Sania, S. Poedts, S. Ali, N. Maryam
Summary: Considering the particle nature of photons, this study explores the impact of electromagnetic radiation pressure on the Rayleigh-Taylor instability in a non-uniform rare magnetoplasm. By revisiting the RTI with radiation pressure in low-density and high-temperature rare plasma, the growth rate conditions and propagating modes are derived using a developed fluid model. The findings highlight the significance of electromagnetic radiation pressure in dense and rare plasmas and its relevance in explaining gravitational instability in laboratory plasmas, such as fusion devices like tokamaks.
Article
Multidisciplinary Sciences
Pier Giuseppe Ledda, Francois Gallaire
Summary: The study investigates the response of a thin film flowing under an inclined plane using the lubrication equation. It shows that rivulets grow downstream due to spanwise inlet forcing, reaching a streamwise-invariant state modulated by drop-like structures called lenses. The occurrence, spacing, and thickness profile of lenses are controlled by various factors including the inclination angle, flow rate, and frequency and amplitude of the time-harmonic inlet forcing.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Thermodynamics
R. H. Hernandez, M. Vial
Summary: This study reports experimental results on inclined Rayleigh–Benard convection in a convection cell with moderate aspect ratio using a high Prandtl aqueous solution of glycerol. The aim is to measure the transition from convective to conductive regime by varying the tilt angle of the cell. Flow transitions between different flow patterns are observed by measuring changes in the heat transfer curve and visualizing the flow.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Chemistry, Physical
Gui-Shi Liu, Huajian Zheng, Zijie Zeng, Yexiong Wang, Weidong Guo, Ting Wang, Heng Chen, Yunsen Chen, Shiqi Hu, Lei Chen, Yaofei Chen, Weiguang Xie, Bo-Ru Yang, Yunhan Luo
Summary: This study reports a self-assembled monolayer (SAM) modulated Plateau-Rayleigh instability (PRI) of silver nanowires (AgNW), which enables invisible patterning and superior stability. Different SAMs have opposite effects on the PRI of AgNW, allowing the tuning of degradation temperature and improvement of thermal durability.
Article
Chemistry, Physical
Shengwu Wang, Lee Li, Qiaoge Zou, Junwu Chen, Xiangen Zhao, Yi Xie, Yongfei Hu, Kai Yang
Summary: A comparative test of abrasion-induced aging on the surface of superhydrophobic coating under dry and water infiltration conditions was conducted. A theoretical prediction model of friction magnitude on the coating surface under both conditions was established, and the experimental phenomenon was analyzed based on the model's theoretical results. The presence of water in Wenzel mode made the superhydrophobic surfaces more prone to abrasion-induced aging due to the presence of Laplace pressure.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Mathematics, Applied
Youyi Zhao, Weiwei Wang
Summary: The study investigated the Rayleigh-Taylor instability in compressible viscoelastic fluid driven by gravity in a bounded domain based on the Oldroyd-B model. The authors proved nonlinear instability of the steady-state in different norms and improved previous instability results through analysis in Lagrangian and Eulerian coordinates.
JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS
(2021)
Article
Nanoscience & Nanotechnology
Sara Seidelin Majidi, Yingchun Su, Mathias Lindh Jorgensen, Christoph Muller, Pourya Forooghi, Guangjun Nie, Menglin Chen
Summary: This study demonstrates the rapid fabrication of artificial lymph vessels using the Plateau-Rayleigh instability, providing new insights into immunology and disease pathologies. By utilizing a beads-on-a-string structure, researchers have successfully created cell-laden fibers, showcasing the potential for mechanistic assay of human immune response and functional replacement. Joint expertise in immunology, microfluidics, and bioreactors has paved the way for future advancements in this technology.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Haining You, Qinghua Zhao, Tao Mei, Xiufang Li, Renchuan You, Dong Wang
Summary: This study has successfully developed a method for large-scale manufacture of polymeric nanoparticles by combining industrial sea-island spinning technology and Rayleigh instability-induced morphology evolution.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Mathematics, Applied
Caifeng Liu
Summary: In this paper, the linear Rayleigh-Taylor instability of an equilibrium state of 3D gravity-driven compressible viscoelastic fluid with an elasticity coefficient less than a critical number kappa c in a moving horizontal periodic domain is considered. The maximal growing mode solutions to the linearized equations are constructed by studying a family of modified variational problems, and an estimate for arbitrary solutions to the linearized equations is proved.
Article
Physics, Multidisciplinary
Bin Liu, Chunhua Zhang, Qin Lou, Hong Liang
Summary: In this paper, the late-time evolution mechanism of 3D single-mode immiscible Rayleigh-Taylor instability (RTI) was numerically studied. It was found that the development of RTI can be divided into four stages, and complex interfacial structures were observed in the turbulent mixing stage. The growth rates of spikes and bubbles were analyzed using five statistical methods, and it was revealed that the spike growth rate increases with the Atwood number, while the bubble growth rate remains steady.
FRONTIERS OF PHYSICS
(2022)
Article
Mechanics
S. Duruk, R. G. Shepherd, E. Boujo, M. Sellier
Summary: This work investigates the three-dimensional flow of a thin liquid film on the outer surface of a rotating ellipsoid. A comprehensive model, considering the non-inertial forces associated with rotation, is derived to describe the evolution of the film thickness. Numerical simulations are performed to study the effects of rotation on a non-constant curvature substrate. The analysis reveals the importance of rotation in influencing the thickness profiles.
Article
Chemistry, Multidisciplinary
Bojie Xu, Xuan Chen, Zhongyu Shi, Lili Meng, Dong Wang, Lei Jiang, Huan Liu
Summary: A novel electrochemical strategy has been developed in this study for achieving on-site switchable DLT-CF, featuring in situ control and fast response. By altering the surface hysteresis resistance, the forces acting on the droplet can be tuned, leading to various controllable liquid transport with adjustable distance and direction.
ADVANCED MATERIALS
(2022)
Article
Mechanics
Rina Nakajima, Kosuke Hayashi
Summary: Experiments were conducted to study the behavior of liquid drops falling through a miscible liquid. It was observed that the drops deform into vortex rings and fragment into smaller drops due to the Rayleigh-Taylor instability. The number of smaller drops was measured for different Archimedes numbers, and the influence of vortex ring interactions on fragmentation was analyzed.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2022)
Article
Chemistry, Multidisciplinary
Qing'an Meng, Bojie Xu, Zhongxue Tang, Yan Wei, Lei Jiang, Huan Liu
Summary: The research reveals that dual cylindrical hairs have the ability of DLT due to wet-rebuilt open-wedged scales. Capillary forces along wedge corners facilitate liquid transport against the scale direction, while the pinning effect at the sharp edges of open-wedges cooperates with ratchet structures to inhibit liquid spreading with the scale direction. This study provides new insights for manipulating liquid using cylindrical fibrous systems.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Zhaoxia Niu, Han Gao, Masao Doi, Jiajia Zhou, Ye Xu
Summary: This study investigates the interplay between advancing consolidation fronts and propagating cracks during the drying process using directional drying channels with wedge-shaped edges of different angles. The results show that, although the shape of the consolidation fronts is altered by the drying edge, the growth direction of the cracks remains perpendicular to the consolidation fronts throughout the drying process, resulting in cracks with a large curvature.
Review
Chemistry, Physical
Zhongyu Shi, Zhongxue Tang, Bojie Xu, Lei Jiang, Huan Liu
Summary: Many natural organisms have the ability of directional liquid transport (DLT) due to the corner effect, which has inspired material fabrication for applications in microfluidics, self-cleaning, water collection, etc. This article reviews recent research advances on bioinspired DLTs induced by the corner effect, the mechanisms involved, and the artificial materials with various applications. Stimulus-responsive DLT materials are also introduced. The bioinspired DLTs have great potential in liquid manipulations.
Article
Chemistry, Multidisciplinary
Tianheng Jiang, Xiaoxun Li, Tenglong Li, Gungun Lin, Huan Liu, Dayong Jin, Lei Jiang
Summary: Fresh popcorn dissolves quickly in the mouth and has a good taste. However, this taste decays rapidly with increased exposure to air, especially humid air. The mechanism of saliva wetting the popcorn is still unknown.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Longhao Zhang, Hao Yan, JiaJia Zhou, Ziguang Zhao, Jin Huang, Lie Chen, Yunfei Ru, Mingjie Liu
Summary: A skeletal muscle-inspired organohydrogel actuator is reported, with solvents confined in hydrophobic microdomains. It is driven by compartmentalized directional network deformation instead of volume change, avoiding limitations from solvent diffusion. The organohydrogel actuator has a frequency of 0.11 Hz, 110 times faster than traditional solvent diffusion-driven hydrogel actuators (<10(-3) Hz), and can lift more than 85 times its own weight. This design achieves high responsive speed, high actuation strength, and large material size, proposing a strategy to fabricate hydrogel actuators comparable with skeletal muscle performance.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Lili Meng, Wei Wang, Bojie Xu, Ji Qin, Kejie Zhang, Huan Liu
Summary: Flexible transparent electrodes (FTEs) have been widely utilized in printable electronic devices, especially those involving light. Solution processes offer advantages in preparing FTEs due to their mild operation conditions, high-throughput, and diversity in micropatterning conductive nanomaterials. The performance of FTEs is determined by the solutions capable of micropatterning conductive nanomaterials, the substrates used, and their applications in flexible electronics. This review provides inspiration for developing functional FTEs.
Article
Chemistry, Physical
Bing Liu, Jiajia Zhou, An-Chang Shi
Summary: The rotational dynamics of discoid particles in quasi-two-dimensional colloidal plastic crystals stabilized via depletion interactions were studied using time-resolved confocal microscopy. A strong coupling between the lattice symmetry and particle rotation was observed, resulting in anisotropic rotational dynamics resembling the underlying hexagonal crystalline symmetry. The presence of orientational minima and potential barriers on the potential surface was found to contribute to the slow rotational diffusion.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Zhongpeng Zhu, Yupeng Chen, Xianfeng Luo, Weining Miao, Zhichao Dong, Jiajia Zhou, Ye Tian, Lei Jiang
Summary: Controllable ultrafast impact superspreading behavior without splash and retraction is achieved on superamphiphilic silicon surfaces by regulating surface wettability. The existence of a precursor film induced by heterogeneous surface wettability at the spreading edge is found to inhibit splash and retraction. This impact superspreading behavior offers effective heat dissipation for spray cooling.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Polymer Science
Jianwei Zhang, Jinyu Lei, Wenzhang Tian, Guangzhao Zhang, George Floudas, Jiajia Zhou
Summary: Molecular dynamics simulations were performed to investigate the capillary filling dynamics of polymer chains in nanopores using a coarse-grained model. Short chains fill slower than predicted by the Lucas-Washburn equation, while long chains fill faster. The analysis suggests that the combination of confinement effect and reduction of effective radius due to the dead zone slows down the imbibition. Reduction of entanglements is the main factor behind the reversing dynamics, leading to faster filling due to lower effective viscosity.
Article
Polymer Science
Tao Wen, Yuting Gao, Jiajia Zhou, Jie Qiu, Shuo Wang, Joachim Loos, Dujin Wang, Xia Dong
Summary: In this study, we introduce a simple method for fast fabrication of porous films and coatings of long-chain polyamides through a nonconventional evaporation induced phase separation. The amphiphilic nature of polyamide 12 allows it to be dissolved in a mixture of high-polarity and low-polarity solvents, leading to the formation of porous structures within 1 min through sequential and fast evaporation. We also investigate the dependence of pore structures on the composition of solutions and demonstrate the applicability of our approach to other long-chain polycondensates. Our findings provide valuable insights into the fabrication of porous materials using amphiphilic polymers.
Review
Chemistry, Physical
Zhongxue Tang, Bojie Xu, Xingkun Man, Huan Liu
Summary: This article reviews bioinspired superhydrophobic fibrous materials from the perspective of fiber dimension scale. It summarizes the fiber dimension characteristics and mechanisms of several representative natural superhydrophobic fibrous systems, as well as artificial superhydrophobic fibers and their various applications. Nanometer-scale fibers achieve superhydrophobicity by minimizing the liquid-solid contact area, while micrometer-scale fibers enhance the mechanical stability of superhydrophobicity. In addition, surface modification strategies and conventional applications of superhydrophobic systems are presented.
Article
Chemistry, Physical
Jianwei Zhang, Lu Qian, Jiajia Zhou, Guangzhao Zhang
Summary: Surface tension is crucial in various fields such as adhesion, wetting, and capillarity. This study combines experiments and molecular dynamics simulations to investigate the relationship between the surface tension of poly(ethylene oxide) (PEO) solution and its molecular weight. The experimental results reveal that the surface tension is scaled to the molecular weight with a certain factor α, up to a critical molecular weight (M*). Simulation results show that α decreases as the solvent quality worsens. The combined findings indicate that PEO concentration has a slight effect on α, while M* decreases with decreasing solvent quality or increasing polymer concentration. The study demonstrates that the adsorption of the polymer at the air-solution surface determines the surface tension of the polymer solution.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Polymer Science
Luyang Li, Xiangmeng Jia, Qingshu Dong, Jiajia Zhou, Weihua Li
Summary: The self-assembly behavior of symmetric diblock copolymers was investigated using self-consistent field theory and dissipative particle dynamics. It was found that the hexagonal dot pattern observed in thin films is an equilibrium morphology that requires ultrathin thickness and asymmetric surface affinities.
Article
Multidisciplinary Sciences
Yongyang Song, Jiajia Zhou, Zhongpeng Zhu, Xiaoxia Li, Yue Zhang, Xinyi Shen, Padraic O'Reilly, Xiuling Li, Xinmiao Liang, Lei Jiang, Shutao Wang
Summary: In this study, the authors synthesized hydrophilic-hydrophobic heterostructure particles (HL-HBPs) using a surface heterogeneous nanostructuring strategy and demonstrated their omnidispersibility. These particles can be dispersed in solvents with different polarity and boiling point, and show efficient adsorption and release of organic dyes.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Bing Liu, Jiajia Zhou, An-Chang Shi
Summary: This study quantitatively investigates the rotational dynamics of discoid particles in quasi-two-dimensional colloidal plastic crystals stabilized via depletion interactions using time-resolved confocal microscopy. The results reveal a strong coupling between lattice symmetry and particle rotation, resulting in anisotropic rotational dynamics resembling the underlying hexagonal crystalline symmetry. The observed slow rotational diffusion is attributed to orientational minima and potential barriers on the potential surface. These findings provide important insights into the role of attraction in the phase behaviors of plastic crystals.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
