Article
Thermodynamics
Haiou Wang, Kun Luo, Evatt R. Hawkes, Jacqueline H. Chen, Jianren Fan
Summary: This study investigated the evaporation and combustion of n-heptane droplets under high pressure conditions using three-dimensional direct numerical simulations. The interactions of turbulence, evaporation, and combustion were explored, showing that turbulence promotes the evaporation process. The ignition behaviors and reaction front structures of low-temperature combustion and single-stage combustion were analyzed in detail.
COMBUSTION AND FLAME
(2021)
Article
Nanoscience & Nanotechnology
Jun Ye, Renjie Li, Jialing Cheng, Dongdong Liu, Yanfang Yang, Hongliang Wang, Xiaoyan Xu, Lin Li, Panpan Ma, Yuling Liu
Summary: This study compares the colloidal stability of commercial AmB nanoformulations and finds that AmB-CSC and AmB-Lipo exhibit good colloidal stability in the injection medium, leading to reduced cytotoxicity and nephrotoxicity.
INTERNATIONAL JOURNAL OF NANOMEDICINE
(2022)
Article
Chemistry, Physical
Philip Daubinger, Fabian Ebert, Sarah Hartmann, Guinevere A. Giffin
Summary: The demand for higher energy densities in lithium-ion batteries leads to increased utilization of space within the cell for electrodes, resulting in increased electrochemical/mechanical interactions and stress. Research on externally-induced mechanical stress and dilation of electrodes in lithium-ion batteries found that high pressure can accelerate degradation mainly at the graphite anode, especially with an uneven pressure distribution.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Yunyu Sun, Jiwei Jiang, Guangju Zhang, Ningning Yuan, Hui Zhang, Bo Song, Bin Dong
Summary: Researchers have discovered that the motion behavior of SiO2/Au/PEN micromotors can be controlled by the incident light angle, exhibiting positive phototactic motion under tilted irradiation and stopping under vertical light. Furthermore, aggregation with controlled position and size can be formed due to on-off motion under vertical light, showing light-controlled dynamic migration behavior.
Article
Nanoscience & Nanotechnology
Constantine V. Yerin, Sergey S. Belykh
Summary: The light diffraction in magnetic emulsions with droplets of a kerosene based magnetic fluid in AMG-10 hydraulic oil has been experimentally studied. The rotation of the emulsion sample in a uniform magnetic field results in a deflection of the diffraction pattern, which is interpreted using the anomalous diffraction approximation. The rotation of the diffraction pattern in the field of hydrodynamic forces is explained by considering the torques of magnetic and viscous friction forces acting on an elongated droplet of magnetic fluid.
Article
Chemistry, Physical
Wenjie Lan, Dizong Cai, Xiaojie Hu, Shan Jing, Shaowei Li
Summary: This study focuses on the interactions between droplets and develops a new method to determine these forces. The findings suggest that droplet deformability is a key parameter in determining the total interaction force between droplets.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Optics
M. H. Oliveira, C. E. Maximo, C. J. Villas-Boas
Summary: This study presents a microscopic model to describe the phenomenon of electromagnetically induced transparency in the multiple-scattering regime, exploring the effects of light-mediated long-range interactions on EIT and the impact of near-field interactions on STIRAP.
Article
Computer Science, Information Systems
Mohamed Mahmoud, Ayman I. Boghdady, Abd El-Rahman A. El-Fikky, Moustafa H. Aly
Summary: This paper studied the probability distribution function of the channel gain for dynamic UVLC models in different types of water, using goodness-of-fit analysis. Different water channels and dynamic scenarios were used, revealing that UVLC is best represented by Weibull, Gamma or Lognormal distributions.
Article
Astronomy & Astrophysics
Maura E. Ramirez-Quezada
Summary: Observations of white dwarfs in dark matter-rich environments can provide strong limits on the strength of dark matter interactions. This study applies an improved formalism of dark matter capture rate in white dwarfs to a general model involving light scalar mediator interaction. The findings show that the bounds obtained from dark matter capture in white dwarfs are complementary to direct detection experiments and particularly strong in the sub-GeV regime.
Review
Chemistry, Multidisciplinary
Pietro Anzini, Daniele Redoglio, Mattia Rocco, Norberto Masciocchi, Fabio Ferri
Summary: Light scattering and turbidimetry techniques are important methods for characterizing the dynamics and structure of nanoparticles and nanostructured networks. They probe different length scales and can be used to characterize different types of samples.
Article
Optics
Xiaobing Feng, Guiqiong Huang, Jian Qiu, Li Peng, Kaiqing Luo, Dongmei Liu, Peng Han
Summary: Dynamic light scattering, a technique for sub-micrometer particle sizing based on Brownian motion theory, is not suitable for particles undergoing both random and directional movement, especially in uncertain directions. This paper derives the intensity autocorrelation function of scattered light for particle systems with random and directional movement, and introduces additional sinc functions to account for the directional movement. Experimental results confirm the validity of the derivation, and the application of this technique can be extended to investigate complex fluid systems with particles undergoing directional movement in known or unknown directions.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Federico Carlini, Nicolas Cherroret
Summary: This paper investigates the properties of spin-orbit interactions (SOI) of light in random environments and discovers that the trajectory of light beams can be adjusted by exploiting disorder correlation in transversally random media. Moreover, by combining with weak measurement and choosing an optimal disorder correlation, the phenomenon of oscillating spin Hall effect can be maximized.
Article
Medicine, Research & Experimental
M. B. Divakara, R. Ashwini, M. S. Santosh, M. Priyanka, C. R. Ravikumar, R. Viswanatha, H. C. Ananda Murthy
Summary: The study reports the early-stage interaction of hIAPP oligomers on the DMPC lipid membrane using electrochemical parameters. The insertion of IAPP into the fluid domains disrupts lipid-to-lipid interaction and restricts membrane mobility.
BIOMEDICINE & PHARMACOTHERAPY
(2021)
Article
Chemistry, Physical
Sourav Kr. Saha, Tomoya Takano, Koji Fushimi, Masatoshi Sakairi, Ryosuke Saito
Summary: The curing behavior of cement paste and formation of passive film on iron were studied using electrochemical techniques and X-ray photoelectron spectroscopy (XPS). The open circuit potential of iron was monitored in cement paste with a pH of -13 for 56 days, and the results showed that the iron was kept in a passive state. The results of electrochemical impedance spectroscopy revealed an increasing trend of film and cement paste resistance with curing time. XPS analysis provided evidence that the formation of ferric hydroxide and ferric oxide was efficient in passivating the iron. The iron surface receded from corrosion due to the high-alkaline environment of cement paste and the formation of a passive film.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Applied
David J. Andlinger, Ulrich Schrempel, Claudia Hengst, Ulrich Kulozik
Summary: The study investigated the heat-induced aggregation behavior of patatin-rich potato protein isolate through RP-HPLC, DSC, and dynamic light scattering. It was found that aggregation occurred at low temperatures despite low degrees of unfolding, and a change in pH affected the critical temperature and aggregate sizes.
Article
Chemistry, Multidisciplinary
Jorge A. Gutierrez, M. Laura Japas, Juana J. Silber, R. Dario Falcone, N. Mariano Correa
Summary: Through the use of different alcohols in AOT reverse micelles, the study explores the interfacial activity and determines n-pentanol as the best cosurfactant that interacts with SO3- through H-bonds, altering the micellar interface curvature. The findings suggest that F-pentanol forms a polar core in RMs without affecting the AOT RM interface, paving the way for the creation of supercritical RMs without modified surfactants or fluorinated compounds.
Article
Chemistry, Physical
Jessica Otarola, Patricia G. Molina, Mariano Garrido, N. Mariano Correa
Summary: A detailed spectroscopic study was conducted to analyze the interaction between an active principle and a lipid-based drug delivery system. The study found that not all PX molecules were fully incorporated into the carrier system, with some molecules located inside the lipid core and others outside the nanocarrier. Spectroscopic techniques revealed the structural behavior of PX species, indicating that the enolic structure was predominant both inside and outside the NLCs.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Review
Polymer Science
Nahir Dib, Cristian M. O. Lepori, N. Mariano Correa, Juana J. Silber, R. Dario Falcone, Luis Garcia-Rio
Summary: This review discusses the formation and application of biocompatible water-in-oil microemulsions known as reverse micelles (RMs), emphasizing the use of biocompatible non-polar solvents and ionic liquids to create organized systems aligned with Green Chemistry principles. The versatility and importance of RMs in drug delivery and food science are highlighted, with a focus on the modification of properties through changes in surfactant and external solvents. The study emphasizes the need for deep analysis to understand the diverse properties of these novel systems.
Article
Chemistry, Physical
Jorge A. Gutierrez, Juana J. Silber, R. Dario Falcone, N. Mariano Correa
Summary: A simple modified methodology based on cationic reverse micelles was used to obtain gold nanoparticles with different morphologies and surface plasmon resonance. The gold nanoparticles showed clear crystallinity changes on different faces in the same solution, with two well-defined and intense absorption bands, making them potentially useful in cancer treatments through photothermic therapy.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Gustavo A. Monti, N. Mariano Correa, R. Dario Falcone, Gustavo F. Silbestri, Fernando Moyano
Summary: Silver nanoparticles stabilized by different sulfonated imidazolium salts have been synthesized as potential recyclable and reusable catalysts for the reduction of nitroaromatic compounds in water. The study presents a detailed analysis of catalytic activity, kinetic parameters, and performance of AgNP as catalysts, revealing the effects of imidazolium salts on catalytic activity. Physicochemical and structural characteristics of AgNPs are key factors influencing catalytic efficiency, and the fact that these catalysts can be recycled for multiple cycles opens up possibilities for their recovery and reuse. Lastly, a comparative study with gold nanoparticles stabilized by the same salts has been conducted.
Article
Chemistry, Physical
M. Soledad Orellano, Diego A. Chiappetta, Juana J. Silber, R. Dario Falcone, N. Mariano Correa
Summary: PRODAN is a fluorescent molecule sensitive to environmental polarity and hydrogen bond interactions, which has potential applications in characterizing polymeric micelles. This study found that PRODAN was wholly incorporated into TPGS and Soluplus (R) micelles, revealing different polar environments and demonstrating its powerful capability as a probe for characterizing polymeric micelles.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Analytical
Marcos E. Farias, N. Mariano Correa, Lucas Sosa, Ana M. Niebylski, Patricia G. Molina
Summary: Soybean is the most produced crop in Argentina, with 99% being genetically modified soybean. A new electrochemical immunosensor for detecting CP4 EPSPS in soybean seeds was successfully developed, offering a simple, low-cost, fast, and reproducible device with high sensitivity and a low detection limit.
Review
Chemistry, Multidisciplinary
Nahir Dib, Juana J. Silber, N. Mariano Correa, R. Dario Falcone
Summary: This review describes the latest technology of converting pharmaceutically active ingredients into amphiphilic ionic liquids as alternative drug delivery systems. The compounds generated by ionic exchange show similar or even better surfactant properties compared to their precursors in water. Specific cations and anions have been widely studied as the components of these amphiphiles.
PHARMACEUTICAL RESEARCH
(2022)
Article
Chemistry, Physical
Diana Blach, Valeria R. Girardi, Juana J. Silber, N. Mariano Correa, R. Dario Falcone
Summary: The study investigates the impact of different organized media on the catalytic efficiency of enzyme reactions. It reveals that the catalytic efficiency of an aprotic IL:water mixture is significantly disrupted when confined in a cationic or anionic organized media. This finding holds significant implications for the technological applications of these organized systems.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Cristian M. O. Lepori, M. Soledad Orellano, N. Mariano Correa, Juana J. Silber, R. Dario Falcone
Summary: In this work, researchers investigated the absorption and emission behavior of a cationic hemicyanine compound in reverse micelles and examined the impact of the microenvironment created by these micelles on their properties as nanoreactors. The results showed significant differences in the photophysical behavior of the compound inside different reverse micelles, highlighting the importance of understanding the interfacial properties for their application as nanoreactors. Furthermore, the researchers evaluated the reverse micelles as reaction media for synthesizing chitosan nanoparticles and found that the microenvironment affected the size and crosslinking of the nanoparticles.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Soledad Stagnoli, Cintia Garro, Ozlem Ertekin, Susanne Heid, Stefan Seyferth, Gaston Soria, N. Mariano Correa, Aldo Leal-Egana, Aldo R. Boccaccini
Summary: This study developed a system for delivering water-insoluble drugs, which can efficiently load drugs and increase the likelihood of drug uptake by cancer cells instead of healthy cells. The system also demonstrates high efficiency and stability during topical application, and it is less invasive compared to alternative methods.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Organic
Nahir Dib, Valeria R. Girardi, Juana J. Silber, N. Mariano Correa, R. Dario Falcone
Summary: The use of biocompatible solvents instead of toxic solvents in reverse micelles can enhance catalytic efficiency without compromising the performance of the micellar systems. This finding demonstrates that reverse micelles can be a promising alternative for efficient and sustainable chemistry.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2021)
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.
