Article
Multidisciplinary Sciences
Youchuang Chao, Olinka Ramirez-Soto, Christian Bahr, Stefan Karpitschka
Summary: The research investigates the coupling between liquid-liquid phase separation and the spreading motion of three-phase contact lines, finding that the classical Cox-Voinov law is no longer applicable and observing spreading beginning well before any visible nucleation of microdroplets. The study suggests that evaporation-induced enrichment, together with surface forces, causes an earlier nucleation in the wetting precursor film, initiating the observed wetting transition.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Materials Science, Ceramics
Wenlong Zhou, Di Liu, Wei Fu, Huaijin Wang, Xiaogong Song, Shengpeng Hu, Hongwei Niu
Summary: Understanding the wetting behavior is crucial for the fabrication of ceramic/ceramic (or metal) components. In the AgCu-xTi/ZrO2 system, the formation of two kinds of products affects the wettability and spreading behavior.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Youqing Sun, Ensieh Yousefi, Anil Kunwar, Nele Moelans, David Seveno, Muxing Guo
Summary: This study investigated the wettability behavior of liquid aluminum on solid nickel at high temperatures, revealing the formation of Al3Ni phase as the primary phase and its significant influence on wetting behavior. Experimental and theoretical analyses confirmed the limited effect of Ni dissolution into Al at temperatures below 950 degrees C on wetting dynamics.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Chemical
C. W. Extrand
Summary: In this study, the spreading of a small sessile drop on a smooth, flat surface is analyzed and a comprehensive energy balance model is developed. It is found that the wettability of the solid surface has a significant impact on the net change in various energies during the spreading process. The spreading of the drop is driven in different ways on surfaces with different wettability. Overall, the model suggests that the spreading of the drop is an exothermic process.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Yi Luan, Seok-Yeong Yu, Amirhossein Abazarikia, Rosemary Dong, So-Youn Kim
Summary: Cyclophosphamide and doxorubicin cause premature ovarian insufficiency, and this study clarifies the mechanism behind it. Dormant oocytes are more sensitive to cyclophosphamide, and TAp63 plays a pivotal role in oocyte death induced by cyclophosphamide and doxorubicin, contrary to previous reports.
Article
Acoustics
Zhengwei Li, Zhiwu Xu, Peng He, Zhongwei Ma, Shu Chen, Jiuchun Yan
Summary: The cavitation characteristics during the spreading of a pure Sn liquid droplet subjected to ultrasonication were studied. Ultrasonic vibration realized the spreading of Sn droplet on the nonwetting pure Al substrate, but the oxide layer at the spreading front is difficult to remove. The high-speed photography result showed the presence of a noncavitation region consistently at the spreading front, and the width of the noncavitation region increased with the size of the spreading area. The bubble density decreased during spreading due to the decreased acoustic pressure.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
S. N. Zhevnenko, M. V. Gorshenkov
Summary: The wetting and spreading behavior of Cu(0.8 at.% Cr) melt over Cr2AlC MAX phase were measured, showing the suitability of the alloy for brazing of Cr2AlC MAX-phase. Chemical interactions during spreading, specifically the dissolution of aluminum in the copper melt, were observed.
Article
Plant Sciences
Marketa Kovarova, Petr Pyszko, Vitezslav Plasek
Summary: The pH of tree bark is influenced by various factors, including epiphytic bryophytes and the inclination of branches. This study found that the effect of bryophytes on the pH of the bark depends on the inclination of branches, with higher inclination leading to a decrease in pH reaction and lower inclination leading to an increase in pH.
Article
Mechanics
Yunus Tansu Aksoy, Pinar Eneren, Erin Koos, Maria Rosaria Vetrano
Summary: In this research, the limitations of existing energy balance models in capturing the droplet spreading process were addressed. By studying the impact of droplets on a smooth sapphire surface and analyzing the data, the researchers improved the model by incorporating fluid viscosity and estimating the characteristic velocity of the viscous dissipation term. The resulting maximum droplet spreading model was shown to be more comprehensive and reliable compared to existing models, as confirmed by experimental data.
Article
Psychology, Multidisciplinary
Teresa Lynch, Nicholas L. Matthews, Michael Gilbert, Stacey Jones, Nina Freiberger
Summary: This article discusses the theoretical mechanisms of user-avatar interaction, arguing that the way people engage avatars and the broader digital environment is the primary factor determining the user-avatar bond. By considering a person's skill in handling/engaging avatars as an organizing predictor, the article explores the impact of skill on user-avatar bonds and grounds the discussion in ecological perception and systems theory.
FRONTIERS IN PSYCHOLOGY
(2022)
Article
Multidisciplinary Sciences
Carlos Molinero, Stefan Thurner
Summary: Urban scaling laws relate various socio-economic, behavioral, and physical variables to city population size, offering insights for city planning, urban resilience, and economics. The emergence of power-law relations in cities remains unclear, but deriving basic exponents for spatially distributed variables from fundamental fractal geometric relations and validating with data from European cities is a step towards better understanding and practical application of these laws.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2021)
Article
Chemistry, Physical
H. Y. Li, L. Q. Li, Z. S. Zhang, X. Y. Meng, H. B. Xia, B. Chen, C. W. Tan, X. G. Song
Summary: This study investigates the laser-induced dynamic wetting process of stainless steel by Al alloy, revealing the mechanism and factors influencing wetting behavior. The results show that temperature difference and Si atom accumulation play vital roles in the wetting process. Moreover, this study provides guidance for laser processing to achieve controlled wetting effects.
APPLIED SURFACE SCIENCE
(2022)
Article
Energy & Fuels
Zechen Zhang, William A. Ducker
Summary: This paper presents an experimental study on the displacement of oil by water in a nano-scale glass channel. Three surfactants were examined and the results showed that only AOT could cause oil displacement within 12 hours. This study suggests that surfactants enhance the transport of water through oil, aiding in oil recovery.
Article
Engineering, Mechanical
Philipp Fricker, Matthias Baumann, Frank Bauer
Summary: Modern lubricants can cause wear and leakage in radial lip seals due to chemical incompatibility with elastomers and increased wear of counterfaces. The wear depends on wetting properties of the friction partners and hydrodynamic influences, influenced by parameters like surface hardness and grain size. Tests show increased wear with polyglycol- and ester-based lubricants due to incomplete wetting and promotion of abrasive wear in the sealing gap.
Article
Astronomy & Astrophysics
L. M. de Sa, A. Bernardo, R. R. A. Bachega, J. E. Horvath, L. S. Rocha, P. H. R. S. Moraes
Summary: The lack of objects between 2 and £5 M in the joint mass distribution of compact objects, known as the mass gap, has been attributed to the supernova mechanism. Recent observations suggest that some candidates within the gap may fill it, indicating a possible scarcity that could be real or a result of small sample statistics. This study quantifies individual candidates and evaluates the joint probability of a mass gap, finding that an absolute mass gap does not exist to a very high confidence level. It remains uncertain if there will be a relative scarcity of objects in the future and how this population can be linked to formation processes.
ASTROPHYSICAL JOURNAL
(2022)
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.