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Liquid crystal torons in Poiseuille-like flows.
Sci Rep
January 2025
Centro de Física Teórica e Computacional, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal.
Three-dimensional (3D) simulations of the structure of liquid crystal (LC) torons, topologically protected distortions of the LC director field, under material flows are rare but essential in microfluidic applications. Here, we show that torons adopt a steady-state configuration at low flow velocity before disintegrating at higher velocities, in line with experimental results. Furthermore, we show that under partial slip conditions at the boundaries, the flow induces a reversible elongation of the torons, also consistent with the experimental observations.
View Article and Find Full Text PDFKonjac glucomannan/zein active film loaded with tea polyphenol-ferric nanoparticles for strawberry preservation.
Int J Biol Macromol
January 2025
College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China. Electronic address:
With increasing global environmental awareness and concerns about food safety, biodegradable active packaging has garnered widespread attention. In this study, the stability and bioactivity of tea polyphenol (TP) were enhanced through the preparation of TP-ferric nanoparticles (TP-Fe NPs) using metal-polyphenol ion coordination. Moreover, the introduction of Fe ions can further enhance the antibacterial effects of NPs.
View Article and Find Full Text PDFPinch-off dynamics of emulsion filaments before and after polymerization of the internal phase.
Soft Matter
January 2025
Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA.
The capillary break-up of complex fluid filaments occurs in many scientific and industrial applications, particularly in bio-printing where both liquid and polymerized droplets exist in the fluid. The simultaneous presence of fluid and solid particles within a carrier fluid and their interactions lead to deviations in the filament break-up from the well-established capillary breakup dynamics of single-phase liquids. To examine the significance of the dispersed phase and the internal interactions between liquid droplets and solid particles, we prepare emulsions through photopolymerization and conduct experimental investigations into the pinch-off dynamics of fluid filaments, focusing on the impact of varying concentrations of liquid droplets (before polymerization) and polymerized droplets.
View Article and Find Full Text PDFMultiomics Analysis Reveals Key Targeted Metabolic Pathways Underlying the Hormesis and Detrimental Effects of Enrofloxacin on Rice Plants.
J Agric Food Chem
January 2025
Institute of Virology and Biotechnology, State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-Products, Key Laboratory of Biotechnology in Plant Protection of Zhejiang Province, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, P. R. China.
Fluoroquinolone antibiotic enrofloxacin (ENR) is frequently detected in agricultural environments. The hormesis and detrimental effects of ENR on crops have been extensively observed. However, the molecular mechanisms underlying these crops' responses to ENR remain limited.
View Article and Find Full Text PDFKinetics of Macroion Adsorption on Silica: Complementary Theoretical and Experimental Investigations for Poly-l-arginine.
Langmuir
January 2025
Department of Chemical Engineering, Technion-IIT, Haifa 32000, Israel.
A comprehensive approach enabling a quantitative interpretation of poly-l-arginine (PARG) adsorption kinetics at solid/electrolyte interfaces was developed. The first step involved all-atom molecular dynamics (MD) modeling of physicochemical characteristics yielding PARG molecule conformations, its contour length, and the cross-section area. It was also shown that PARG molecules, even in concentrated electrolyte solutions (100 mM NaCl), assume a largely elongated shape with an aspect ratio of 36.
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