Article
Physics, Fluids & Plasmas
L. H. Miranda-Filho, T. A. Sobral, A. J. F. de Souza, Y. Elskens, Antonio R. de C. Romaguera
Summary: This article discusses the dynamical phase transition in Vicsek systems and investigates their chaotic behavior by computing the largest Lyapunov exponent (LLE). The authors find a chaotic regime for the collective behavior of the self-propelled particles (SPPs) based on the LLE and observe a significant change in the dependence of LLE on applied noise near the known transition points of the Vicsek model.
Article
Energy & Fuels
Awatef Abidi, Muhyaddin Rawa, Yacine Khetib, Hatem Faiz Assad Sindi, Mohsen Sharifpur, Goshtasp Cheraghian
Summary: In this research, simulations of the charging and discharging processes of nano-phase change material (nano-PCM) containing Graphene nanoparticles in a two-dimensional circular enclosure were conducted. The results show that using longer blades in the enclosure leads to higher temperatures in charging mode, lower temperatures in discharging mode, and faster overall charging and discharging processes.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Multidisciplinary Sciences
Hope M. Bretscher, Paolo Andrich, Prachi Telang, Anupam Singh, Luminita Harnagea, A. K. Sood, Akshay Rao
Summary: The researchers used ultrafast spectroscopy to study the out-of-equilibrium dynamics of Ta2NiSe5, demonstrating that transient reflectivity in the near-infrared range is connected to low-energy physics. They concluded that electronic correlations play a decisive role in the formation of excitonic order.
NATURE COMMUNICATIONS
(2021)
Article
Engineering, Multidisciplinary
Moharam Habibnejad Korayem, Hesam Khaksar
Summary: This article investigates the impact of impact on the dynamic modeling and simulation of cubic and elliptic nanoparticles in manipulation process based on atomic force microscopy (AFM). The results show different movement patterns of nanoparticles under various forces, providing insights into the manipulation process of nanoparticles.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Mathematics, Applied
Pau Clusella, Romualdo Pastor-Satorras
Summary: This paper generalizes the Vicsek model and studies new multiplicative models, as well as angular probability density functions of noise terms, to find that the characteristics of phase transitions of SPPs' global interactions depend on the choice of noise distribution.
Article
Physics, Multidisciplinary
Parisa Rahmani, Fernando Peruani, Pawel Romanczuk
Summary: The study reveals that in active systems with topological interactions, spatial heterogeneities can maintain long-range order and enhance the emergence of traveling bands. Topological flocking models in heterogeneous environments exhibit features similar to metric models, with spatial heterogeneities inducing an effective density-order coupling that facilitates the emergence of traveling bands.
COMMUNICATIONS PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Zhen-Ya Zhou, Yang Sun, Liang Gao, Yun-Jiang Wang, Hai-Bin Yu
Summary: In this study, molecular dynamics simulations and metadynamics are used to investigate the atomic rearrangement mechanism in glass materials. It is shown that there is a correlation between string-like cooperative motions and plastic deformation in amorphous materials.
Article
Physics, Fluids & Plasmas
Monika Sanoria, Raghunath Chelakkot, Amitabha Nandi
Summary: The softening of interaction of active particles destabilizes the highly ordered dense phase, resulting in the formation of a porous cluster spanning the system. The system also exhibits standard percolation transition characteristics when the particle motility exceeds a critical value. Additionally, similar transitions are observed in the athermal limit, even at low motility. The phase diagram of repulsive active particles is revealed to be richer than previously conceived.
Article
Physics, Fluids & Plasmas
David Velasco, Juan M. Lopez, Diego Pazo
Summary: Globally coupled maps (GCMs) are prototypical examples of high-dimensional dynamical systems where an ensemble of weakly coupled identical chaotic units form GCMs typically exhibit hyperchaotic turbulent state. Recent study shows that in turbulent GCMs with positive multipliers, the largest Lyapunov exponent (LE) does not follow the logarithmic relationship as previously predicted, but follows a power-law scaling instead.
Article
Materials Science, Ceramics
Konomi Fujimoto, Yukio Sato, Yoshifumi Fuchikami, Ryo Teranishi, Kenji Kaneko
Summary: This study suggests that ferroelectricity may be obtained in hafnium-oxide-based nanoparticles, as zirconium-doped hafnium oxide nanoparticles with diameters of approximately 3-4 nm were found to belong to a metastable phase with an orthorhombic-like local atomic arrangement.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Physics, Multidisciplinary
Yue Wu, Jiawei Li, Duxin Chen, Xiang Li, Hai-Tao Zhang
Summary: A large part of biological collective behaviors involves motional formation patterns like migration, vortex, aggregation, etc. In a minimal collective motion model, phase transitions are observed among gas-like, crystal-like, and liquid-sphere-like patterns. Noise magnitudes can affect the synchronization of moving direction in gas-like and crystal-like phases, but not in the liquid-sphere-like phase. Increasing noise magnitudes can lead to the emergence of three sub-phases of migration liquid-sphere, vortex liquid-sphere and aggregation liquid-sphere.
Article
Mechanics
Louis-Alexandre Couston, Eric Hester, Benjamin Favier, John R. Taylor, Paul R. Holland, Adrian Jenkins
Summary: We conducted an idealized numerical study on melting and freezing solid adjacent to turbulent, buoyancy-affected shear flow. The results show that channels generated at the fluid-solid interface align with the direction of the mean flow and vary significantly under different density stratification.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Physics, Nuclear
Moemi Matsumoto, Yusuke Tanimura, Kouichi Hagino
Summary: The generator coordinate method (GCM) is a well-known method for describing nuclear collective motions. We propose a new extension of the GCM, in which the basis Slater determinants and weight factors are optimized using the variational principle. By applying this method to 16O and 28Si nuclei with the Skyrme functional, we show that the optimized bases correspond to excited states along a collective path, challenging the assumption of the conventional GCM.
Article
Chemistry, Physical
Benjamin Sorkin, Avraham Be'er, Haim Diamant, Gil Ariel
Summary: A major challenge in the study of active matter is quantitatively characterizing phases and transitions. This study shows how entropy analysis can be used to classify spatial patterns and regimes in collective behavior. The analysis estimates the contributions of position and orientation correlations to total entropy, pinpointing the flocking transition in the Vicsek model and providing insight into the physical mechanism behind it. Additionally, when applied to experiments on swarming Bacillus subtilis with different cell aspect ratios and overall bacterial area fractions, the entropy analysis reveals a rich phase diagram with transitions between qualitatively different swarm statistics. The physical and biological implications of these findings are discussed.
Article
Astronomy & Astrophysics
Yu Zhang, Ying-Wen He, D. Karlsson, Chong Qi, Feng Pan, J. P. Draayer
Summary: The anomalous low-energy E2-related behavior of a triaxially deformed nucleus is examined using the interacting boson model. The results reveal striking features that can be traced back to a finite-N effect, providing a deeper understanding of the physical features of a soft triaxially deformed nucleus.
Article
Chemistry, Multidisciplinary
Pengcheng Li, Hao Zhang, Jun Lu, Ge Li
Summary: Electrolyte engineering is crucial for the commercialization of lithium metal batteries. In this study, lithium metal is stabilized in a highly reactive sulfolane-based electrolyte under low concentration. The use of inorganic-polymer hybrid solid electrolyte interphase enables dense lithium deposition and high plating/stripping efficiency. The low concentration electrolyte also offers excellent cycling stability and cost-effectiveness.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Ziwei Zhao, Pengcheng Li, Zhiqing Zhang, Hao Zhang, Ge Li
Summary: In this study, a novel electrolyte additive (histidine) was introduced into the conventional ZnSO4 electrolyte to address the issues of dendrite growth, hydrogen evolution reaction, and by-product generation with metallic zinc-based anodes. The additive molecule exhibited strong cationic specific absorption with the zinc anode, effectively regulating Zn2+ deposition and inhibiting hydrogen evolution. The unique buffer-like functional groups of histidine further stabilized the electrolyte interphase pH value, reducing by-product generation. With this electrolyte additive, a Zn||Zn symmetric cell showed excellent stability, running for more than 3000 hours under a current density of 2 mA cm-2.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Xuwen Peng, Qian Peng, Meng Wu, Wenda Wang, Yongfeng Gao, Xiong Liu, Yongxiang Sun, Diling Yang, Qiongyao Peng, Tao Wang, Xing-Zhen Chen, Jifang Liu, Hao Zhang, Hongbo Zeng
Summary: A pH and temperature dual-responsive microgel-embedded hydrogel with excellent mechanical properties and antimicrobial properties has been fabricated for potential applications as smart wound dressing materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
An Li, Jing Chang, Tao Shui, Qingxia Liu, Hao Zhang, Hongbo Zeng
Summary: The prevention of calcite aggregation and scaling is a challenging problem in aqueous systems and environmental science. This study investigated the nanoscale topographic features of calcite in aggregation and found that intermolecular and surface forces significantly influence the process. Factors such as solution pH, inhibitor concentration, and salinity were found to affect the forces involved, leading to either repulsion or adhesion, which could affect calcite aggregation and surface deposition.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yimei Chen, Facheng Gong, Wenjing Deng, Hao Zhang, Xiaolei Wang
Summary: A low-cost and biocompatible electrolyte additive with dual-function is designed to optimize the electrode interface and Zn2+ coordination environment. The phytic acid additive can absorb on the electrode surface, cover the active sites for proton attack, and guide the uniform deposition of zinc. It also helps in the de-hydration of Zn [(H2O)6]2+ and reduces water molecules in the first hydration layer of Zn2+ through hydrogen bonding interactions.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Xuzi Zhang, Yue Li, Hao Zhang, Ge Li
Summary: Researchers designed a three-dimensional material with N-doped carbon nanofibers as the base and uniformly distributed NiCo2S4 nanosheets on the surface to address the issues of dendritic growth and volume fluctuation in lithium metal batteries. The unique structure of the material can guide lithium diffusion and prevent dendritic growth, ensuring long-term stable performance. When paired with a LiFePO4 cathode, the material shows enhanced performance compared to a bare Li anode.
Article
Chemistry, Physical
Yue Li, Hongbo Zeng, Hao Zhang
Summary: In this study, the effect of impurity metal doping on the initial stage of calcite growth was investigated using first-principles methods. The adsorption of the CaCO3 molecule on anhydrous and hydrated calcite surfaces doped with Mg, Cu, Zn, Sr, and Ba was analyzed, as well as the interactions between water molecules and the different dopants. The results suggest that the adsorption ability of anhydrous calcite surfaces towards the CaCO3 molecule is determined by the size of the dopant, while the adsorption behavior for water molecules is dominated by chemical bonding. The study provides new insights into the inhibiting mechanism of Mg, Cu, and Zn impurities on calcite growth and highlights the feasibility of using Sr and Ba dopants to facilitate calcite growth and mineralize toxic Sr and Ba from contaminated environments.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Hao Zhang, Xinyi Wang, Jiarui Zhang, Hai-Bin Yu, Jack F. Douglas
Summary: In this study, we investigated the glass-forming behavior of a metallic glass material (Al90Sm10), which exhibits a fragile-strong glass formation pattern. We focused on the anomalous static scattering and calculated the hyperuniformity index H and the mean-square particle displacement < u(2)> of the liquid. Comparative analysis with crystalline Cu suggests that the critical value of H on the order of 10(-3) is analogous to the Lindemann criterion for melting and softening processes. We further proposed that the emergence of fragile-strong glass formation and liquid-liquid phase separation in this class of liquids is due to a cooperative self-assembly process in the glass-forming liquid.
EUROPEAN PHYSICAL JOURNAL E
(2023)
Article
Chemistry, Physical
Diling Yang, Ziqian Zhao, Lu Gong, Yongxiang Sun, Xuwen Peng, Qiongyao Peng, Tao Wang, Qi Liu, Hao Zhang, Hongbo Zeng
Summary: Research shows that the surface interactions between bubbles, oil, and interface-active species like asphaltenes have a significant impact on various engineering processes. Experimental studies have quantified the surface forces in different aqueous solutions and examined the effects of variables such as asphaltenes concentration, pH, salinity, Ca2+ ions, and surfactants.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yan Dong, Zhiping Deng, Hao Zhang, Guangyi Liu, Xiaolei Wang
Summary: In this work, heterojunction nanowire arrays consisting of manganese oxide and cobalt phosphide were designed to meet industrial demand. The optimized electrode exhibited remarkable bifunctional electrocatalytic performance, superior durability, and low voltage, highlighting their potential for practical industrial applications.
Article
Engineering, Chemical
Qing Sun, Jingsi Chen, Ziqian Zhao, Diling Yang, Yaoyu Xiao, Hao Zhang, Xin Ma, Hong Zhong, Hongbo Zeng
Summary: In this study, a pH-responsive surfactant was developed, which selectively interacted with different target substances through two pH-switchable functional groups, enabling stepwise and efficient separation of a three-component mineral system.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Correction
Engineering, Multidisciplinary
Diling Yang, Xuwen Peng, Qiongyao Peng, Tao Wang, Chenyu Qiao, Ziqian Zhao, Lu Gong, Yueliang Liu, Hao Zhang, Hongbo Zeng
Article
Chemistry, Physical
Guocai Lv, Wenjuan Qian, Hao Zhang, Ye Su, Ping Qian
Summary: This work systematically investigates the properties of Ti3C2(O2)/Al composites using first-principles calculations. The study shows that the -O functional group enhances the tensile properties of the composites. The Al-O-Ti interlocking structure improves the load transfer capability of AlMCs and thus enhances their mechanical properties.
APPLIED SURFACE SCIENCE
(2024)
Article
Engineering, Chemical
Liyi Zhu, Wensheng Lyu, Xiaohui Mao, Ziqian Zhao, Diling Yang, Hao Zhang, Kun Wang, Peng Yang, Hongbo Zeng
Summary: The effects of polyethylene oxide (PEO) dosage and solution pH on the flocculation, rheological and surface/interfacial properties of the slurry were investigated. The study found that the settling rate of the tailings was lowest in strongly acidic solutions and reached its peak in strongly alkaline solutions. PEO dosage had a modest impact on the yield stress in strong acid solutions, but a notable influence in neutral and strongly alkaline solutions. The adsorption of PEO chains on silica surfaces was enhanced in strong alkaline solutions and partially inhibited in strongly acidic solutions. Surface force measurements showed that PEO chains can bridge the tailings particles, increasing the suspension's yield stress.
Article
Materials Science, Multidisciplinary
Zhixiao Xu, Yue Li, Ge Li, Hao Zhang, Xiaolei Wang
Summary: A reversible Zn powder electrode, fabricated by controlling the growth of zinc crystals in different solvents, shows improved performance and longer lifespan in batteries due to its high orientation of Zn (002) plane.