Article
Multidisciplinary Sciences
V. E. Zakhvataev, L. A. Kompaniets
Summary: This study discusses the possible association of density variations in liquid water with the dynamics of terahertz longitudinal acoustic-like modes, and suggests the formation of soliton-like collective excitations at a nanometer length scale. The dynamic mechanism identified in the study may contribute to the formation and dynamics of fluctuating density heterogeneities, and could be relevant to supercooled water phenomena and ultrafast biological processes.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Umar Javed, Jamir Marino, Vadim Oganesyan, Michael Kolodrubetz
Summary: In this study, we investigate the dynamics of the one-dimensional Ising model in the presence of a static symmetry-breaking boundary field. We observe oscillatory correlations with power-law decay and discover a phase diagram of dynamical responses, which directly relates to changes in the number of edge modes as the boundary and bulk magnetic field are varied. We propose experimental setups, such as Rydberg chains, to demonstrate the universal physics.
Article
Multidisciplinary Sciences
Domenico Larobina, Angelo Pommella, Adrian-Marie Philippe, Med Yassine Nagazi, Luca Cipelletti
Summary: Mucus is a biological gel that plays essential roles in protecting tissues. Research shows that moderate shear stress can significantly enhance the reorganization of mucus at the microscopic level, providing insights into the dynamics of mucus rearrangement and potential implications for various phenomena.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Physics, Fluids & Plasmas
D. A. Conyuh, Y. M. Beltukov
Summary: Viscoelastic effects are crucial in damping vibrational modes in harmonic amorphous solids. The relaxation of elastic waves in these materials is described using a memory function of a semi-infinite one-dimensional mass-spring chain. The initial vibrational energy spreads along the chain, but encounters a barrier at the beginning of the chain which reduces energy decay below the Ioffe-Regel frequency. A numerically stable method is presented to determine the parameters of the chain, based on Chebyshev expansion of the local vibrational density of states.
Article
Chemistry, Physical
Shota Goto, Kang Kim, Nobuyuki Matubayasi
Summary: The dynamics of ring polymer melts were studied using molecular dynamics simulations. Rouse-like behavior was observed in ring polymers, while a crossover from Rouse to reptation behavior was observed in linear polymers. Non-Gaussianity of ring polymers was found to be significantly suppressed at long chain lengths, in contrast to the growth in linear polymers.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Biotechnology & Applied Microbiology
Rosti Readioff, Brendan Geraghty, Yalda A. Kharaz, Ahmed Elsheikh, Eithne Comerford
Summary: This study qualitatively investigated the contribution of proteoglycans (PGs) to the biomechanical behavior of the canine cranial cruciate ligament (CCL). The results suggest that altering PGs content changes the microstructural organization and viscoelasticity of the CCLs, which may predispose to injury and lead to knee joint osteoarthritis.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Chemistry, Physical
Joel Diaz Maier, Joachim Wagner
Summary: The viscoelastic properties of pNIPAM hydrogels cross-linked with glutaraldehyde are investigated, showing strong dependence on the ratio of monomer and glutaraldehyde as well as temperature sensitivity. The experimentally obtained viscosities and linear viscoelastic moduli are analyzed using a schematic mode-coupling ansatz employing a rescaled F-12-model.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Physics, Multidisciplinary
Mohd Alam, Arkadeb Pal, Khyati Anand, Surajit Ghosh, Saurabh Tripathi, Ranjan K. Singh, A. K. Ghosh, H. D. Yang, Sandip Chatterjee
Summary: The temperature-dependent Raman spectroscopy and dielectric property of pyrochlore Eu2Ti2O7 were investigated. The presence of additional phonon modes below 200 K suggests a local structural change. The anomalous softening of the phonon modes and the crystal-field-induced short-range magnetic ordering below 150 K unveil a possible spin-phonon coupling.
Article
Chemistry, Physical
Jun-Ying Feng, Yuan-Pern Lee, Henryk A. Witek, Po-Jen Hsu, Jer-Lai Kuo, Takayuki Ebata
Summary: The infrared spectra of pyridine-water clusters were investigated under jet-cooled condition, showing an unusual intensity pattern upon VUV ionization. The structural change of the clusters after VUV ionization led to the elimination of water molecules, and only the spectrum of (Pyd)(2)(+) cation exhibited a well-resolved structure.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Materials Science, Paper & Wood
Akari Okugawa, Yoshiaki Yuguchi, Chihiro Yamane
Summary: The relaxation behaviors of regenerated cellulose fibers induced by water were studied, showing that the glass transition temperatures in a dry state shifted to room temperature by interaction with water. This phenomenon is also likely to occur in natural cellulose fibers.
Article
Chemistry, Physical
Larisa Latypova, Alexander Puzenko, Yuri Poluektov, Anastasia Anashkina, Irina Petrushanko, Anna Bogdanova, Yuri Feldman
Summary: The interactions between ions and methemoglobin as well as the role of hemoglobin in recruiting water molecules to its hydration shell vary with concentration. At higher concentrations, hemoglobin plays a more significant role in attracting water molecules. The theoretical evaluation of free and bound water ratio for hemoglobin concentration in the absence of ions corresponds with experimental results.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Construction & Building Technology
Mulian Zheng, Yumei Liu, Xia Liu, Wenwu Zhang, Fei Wang, Shan Liu
Summary: The study investigates the viscoelastic behaviors of modified asphalt containing multi-walled carbon nanotubes and crumb rubber. The addition of these modifiers increased high-temperature viscosity and reduced temperature susceptibility of the base binder. The composite-modified asphalt showed better viscoelastic behaviors compared to asphalt modified with either crumb rubber or multi-walled carbon nanotubes alone, enhancing permanent deformation resistance, creep-recovery behaviors, and stress relaxation characteristics of the asphalt.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Multidisciplinary Sciences
M. G. Cottam, D. J. Lockwood
Summary: This study presents an experimental and theoretical analysis of the lattice vibrational modes in the quasi-one-dimensional antiferromagnet RbCoCl3. The findings provide evidence for the role of spin-phonon interactions in determining the frequencies of certain phonon modes. The behavior observed in RbCoCl3 differs from that of other antiferromagnets, and the theory is modified to accommodate the unique spin Hamiltonian.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Mechanical
Dai Xuan Lu, Nhu H. T. Nguyen, Ha H. Bui
Summary: Asphalt concrete shows great dependence on loading rates and time in terms of its mechanical behavior, which poses a challenge for numerical methods. This study proposes a new modelling approach using the discrete element method (DEM) to capture the behavior of asphalt concrete under different loading rates and durations. A new inter-particle contact model is developed for the DEM, which can describe the rate and time dependency, viscoelastic damage, and plastic-damage behavior of asphalt concrete. The proposed approach demonstrates its effectiveness through comparisons and verifications with a wide range of experiments, and it can provide insights into the failure mechanisms and transitional behaviors of asphalt material.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Physics, Condensed Matter
Shipra Bhatt, Debjani Bagchi
Summary: Raman spectroscopy was utilized to study relaxation dynamics in polymer glass at two different length scales. The response of polyvinyl acetate to various thermal cycles revealed enhanced disorder and molecular mobility in the film form compared to the unprocessed form. The study also showed the presence of micro-scale clusters with fractal boundaries in the film after a quench, indicating heterogeneous molecular dynamics.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Polymer Science
Ensong Zhang, Hongxiang Chen, Xuemin Dai, Xue Liu, Wenke Yang, Wei Liu, Zhixin Dong, Xuepeng Qiu, Xiangling Ji
JOURNAL OF POLYMER RESEARCH
(2017)
Article
Polymer Science
Ensong Zhang, Xuemin Dai, Youliang Zhu, Quan Chen, Zhaoyan Sun, Xuepeng Qiu, Xiangling Ji
Article
Polymer Science
Wei Liu, Xiangling Ji
Summary: The spatial arrangement of functional inorganic nanoparticles within polymer micelles is crucial for the performance of nanocomposites. The grafting density of different lengths of polystyrene ligands onto fluorescent CdSe/CdS core/shell quantum dots decreases with increasing ligand length. The length of PS ligands can regulate the precise location of QDs inside co-assemblies, affecting their distribution and aggregation within the polymer matrix.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Polymer Science
Lu Shi, Wei Liu, Yanhu Xue, Mei Hong, Xiangling Ji
Summary: Temperature Rising Elution Fractionation (TREF) is effective for separating polyolefin resins based on their crystallizability. The isothermal crystallization temperature significantly affects the nucleation and growth of crystals, leading to differences in the relative content of eluted fractions. Lower isothermal crystallization temperature results in more effective fractionation of copolymer fractions and influences the chain microstructure by broadening the distribution of ethylene content and isotacticity.
Article
Materials Science, Multidisciplinary
Xu Yang, Baolong Wang, Di Sha, Yonggang Liu, Zhi Liu, Kai Shi, Wei Liu, Cong Yu, Xiangling Ji
Summary: A composite hydrogel film based on PVA with excellent antibacterial properties and antioxidant activity was prepared, showing potential for biomedical applications as wound dressings. The presence of gallic acid in the composite films contributes to both the antibacterial and antioxidant effects.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Baolong Wang, Run Zheng, Kai Shi, Xiangling Ji
Summary: In order to solve the emulsion separation problem of emulsified oil wastewater, a series of three-dimensional melamine/polyvinyl alcohol formaldehyde (MF/PVF-Cn-x) sponges with interpenetrating polymer networks (IPNs) and hierarchical porous structure were synthesized. These materials exhibited excellent separation performance and antifouling property.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Rui Li, Zhenkang Zhang, Wei Liu, Yanxiong Pan, Xiangling Ji
Summary: This study investigates the relationship between chain microstructure and mechanical performance of impact polypropylene resins. Two in-reactor alloy impact polypropylene resins (samples A and B) with different toughness but same stiffness are fractionated using preparative temperature rising elution fractionation (P-TREF). The fractions are characterized using several analytical techniques. The results show that the ethylene-propylene rubber content and molecular weight are higher in sample A, leading to better toughness. Additionally, the crystallinities of the fractions in sample A are higher than those in sample B, especially for high-temperature fractions. These findings provide valuable guidance for improving the mechanical properties of polypropylene.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Polymer Science
Zhenkang Zhang, Yanhu Xue, Rui Li, Wei Liu, Shuang He, Xiangling Ji
Summary: TREF is a method to separate resins based on crystallizability, and the cooling rate can affect the crystallization process and chain microstructure of the fractions obtained from PB-1 resin.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Haoke Qiu, Lunyang Liu, Xuepeng Qiu, Xuemin Dai, Xiangling Ji, Zhao-Yan Sun
Summary: Language models, such as PolyNC, show great potential in accelerating material design and prediction of polymer properties. They can comprehensively understand polymer properties through natural language prompts and describe polymer structures using chemical language. With their exceptional performance in both regression and classification tasks, these models offer compelling evidence for their deployment in polymer research.
Article
Chemistry, Multidisciplinary
Di Sha, Run Zheng, Baolong Wang, Kai Shi, Xu Yang, Xue Liu, Zhi Liu, Xiangling Ji
Summary: In this study, 3D superhydrophilic polyvinyl alcohol-formaldehyde composite sponges with suitable pore sizes were successfully prepared and showed high efficiency in separating oil-in-water emulsions solely by gravity. The composite sponges demonstrated outstanding hydrophilicity, excellent stability, simple preparation method, and low cost, making them promising candidates for practical applications in emulsion separation.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Baolong Wang, Xu Yang, Di Sha, Kai Shi, Jiuduo Xu, Xiangling Ji
ACS APPLIED POLYMER MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Xu Yang, Di Sha, Jiuduo Xu, Niu Niu, Kai Shi, Yanxiong Pan, Cong Yu, Hua Wei, Baolong Wang, Xiangling Ji
NEW JOURNAL OF CHEMISTRY
(2019)
Article
Chemistry, Multidisciplinary
Hongxiang Chen, Wei Liu, Mei Hong, Ensong Zhang, Xuemin Dai, Quan Chen, Wenke Yang, Yanhu Xue, Xuepeng Qiu, Xiangling Ji
Article
Chemistry, Physical
Yiping Yin, Zhe Wang, Hua Zou
Summary: This study presents a novel method for preparing dimpled polymer-silica nanocomposite particles using interfacial swelling-based seeded polymerization. The optimized conditions allow for a relatively high percentage of dimpled particles to be achieved.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Chemistry, Physical
Vladislav S. Petrovskii, Stepan I. Zholudev, Igor I. Potemkin
Summary: This article investigates the behavior of linear and ring polypeptide chains in aqueous solution and explores the properties of the complexes formed by these chains with oppositely charged surfactants. The results demonstrate that the complexes of linear supercharged unfolded polypeptides and the corresponding surfactants exhibit impressive adhesive properties.
Article
Chemistry, Physical
Merve Cevik, Serkan Dikici
Summary: Cardiovascular diseases are a leading cause of death globally, and vascular grafts are a promising treatment option. This study focuses on tissue-engineered vascular grafts (TEVGs) using decellularized parsley stems as a potential biomaterial. The decellularized parsley stems showed suitable properties for TEVGs, providing a suitable environment for human endothelial cells to form a pseudo endothelium. This study showcases the potential of using parsley stems for TEVGs.
Article
Chemistry, Physical
Gustavo A. Vasquez-Montoya, Tadej Emersic, Noe Atzin, Antonio Tavera-Vazquez, Ali Mozaffari, Rui Zhang, Orlando Guzman, Alexey Snezhko, Paul F. Nealey, Juan J. de Pablo
Summary: The optical properties of liquid crystals are typically controlled by electric fields. In this study, we investigate the effects of microfluidic flows and acoustic fields on the molecular orientation and optical response of nematic liquid crystals. We identify several previously unknown structures and explain them through calculations and simulations. These findings hold promise for the development of new systems combining sound, flow, and confinement.
Article
Chemistry, Physical
Xinjun Wu, Xin Guan, Shushu Chen, Jiangpeng Jia, Chongyi Chen, Jiawei Zhang, Chuanzhuang Zhao
Summary: This research presents a novel shape memory hydrogel with a remodelable permanent shape and programmable cold-induced shape recovery behavior. The hydrogel is prepared using specific treatment methods to achieve shape fixation by heating and shape recovery by cooling. Additionally, deformable devices can be obtained by assembling hydrogel blocks with different concentrations.
Article
Chemistry, Physical
Rebecca Hengsbach, Gerhard Fink, Ulrich Simon
Summary: This study examines the properties of DNA functionalized pNipmam microgels and pure pNipmam microgels at different concentrations of sodium chloride and in PBS solutions using temperature dependent H-1-NMR measurements. The results show that DNA modification affects the volume phase transition temperature and the addition of salt and PBS further enhances this effect.
Article
Chemistry, Physical
Ningyi Li, Junhong Li, Lijingting Qing, Shicheng Ma, Yao Li, Baohui Li
Summary: This paper investigates the self-assembly behavior of colloids with competing interactions under spherical confinement and finds that different ordered structures can be formed under different sized spherical confinements. Moreover, more perforated structures are formed in smaller spheres.