Article
Mathematics
Jinrong Wang, Lulu Ren
Summary: This paper investigates the spatially homogeneous Boltzmann equation for Fermi-Dirac particles in the hard sphere model. The global existence and uniqueness of classical solutions to this problem are proven, along with the corresponding L infinity and L13 estimates of the solutions. The stability of the spatially homogeneous Boltzmann equation for Fermi-Dirac particles is demonstrated using uniformly bounded L13 estimation. Additionally, an upper bound of L13 estimate for the classical Boltzmann equation at infinite time interval is provided. The stability between the quantum Boltzmann equation and the classical Boltzmann equation as the Planck constant tends to zero is also proven.
JOURNAL OF FUNCTIONAL ANALYSIS
(2023)
Article
Mathematics
Ning Jiang, Linjie Xiong, Kai Zhou
Summary: We investigated the Boltzmann-Fermi-Dirac equation in dilute gas dynamics considering quantum effects, and proved the global existence of classical solution near equilibrium by new estimates on trilinear terms in the collision integral. Additionally, we rigorously justified the limit from the Boltzmann-Fermi-Dirac equation to the incompressible Navier-Stokes-Fourier equations, which was formally derived by Zakrevskiy.
JOURNAL OF DIFFERENTIAL EQUATIONS
(2022)
Article
Multidisciplinary Sciences
Sung-Cheol Kim, Adith S. Arun, Mehmet Eren Ahsen, Robert Vogel, Gustavo Stolovitzky
Summary: Binary classification is a central problem in machine learning, and there is a surprising relationship between the probability of sample belonging to one class and the Fermi-Dirac distribution. The AUC is related to the temperature of an equivalent physical system, and the optimal decision threshold is associated with the chemical potential. A closed-form expression for calculating the variance of AUC has been derived, and an ensemble learning algorithm called FiDEL has been introduced.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Physical
Takamichi Terao
Summary: The research investigates the electrostatic screening phenomena on a macroion in 1:1 concentrated electrolytes in the underscreening regime. Using Monte Carlo simulations, the density profile of microions near a macroion was obtained, revealing that both coions and counterions reach maximum density near the macroion beyond a critical electrolyte concentration. The phenomenon of microions in concentrated electrolyte solutions cannot be explained by traditional electric double layers, shedding light on anomalous microion distribution due to ion-ion correlations in the underscreening regime.
Review
Chemistry, Multidisciplinary
Long Zhang, Xiaohua Yang, Shun Li, JianMing Zhang
Summary: Oriented external electric fields are emerging as effective means of smart chemical changes, facing challenges in controlling field orientation and adjusting electrostatic stimuli. Surface models provide a versatile platform for addressing these challenges. Functionalization of silicon surfaces reveals the importance of electrostatic effects in chemical reactions.
FRONTIERS IN CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Ivan B. Karomi
Summary: This study compared InAsP QD materials with the standard InP QD laser and found that InAsP QD had a higher strain field and deeper dot confinement. The breakdown of the Fermi-Dirac distribution at 150K for InAsP QD materials was also observed, indicating the potential of InAsP for ultrafast source generation.
Article
Chemistry, Physical
Cheng-Chia Chen, Fu-Ming Sutarsis, Jagabandhu Patra, Fu-Ming Wang, Jeng-Yu Lin, Quan-Feng Dong, Yu-Sheng Su, Jeng-Kuei Chang
Summary: Self-discharge is a crucial issue for supercapacitors, which results in voltage depression and limits their charge storage performance. A cost-effective and facile strategy for addressing self-discharge is developed in this work. It is found that self-discharge is closely associated with the pore size distribution of activated carbon electrodes, and this can be controlled by the binder type. The effects of binder selection on the self-discharge and reliability of supercapacitors are investigated.
Article
Physics, Fluids & Plasmas
Michiel Sprik
Summary: The text discusses how mobile charge in an electrolytic solution can be represented by ionic polarization and extended to a dielectric body. It explores the use of Poisson-Boltzmann functional and Ericksen's variational procedure to derive equilibrium equations for electric potential and ion concentration, as well as how transverse polarization is incorporated into the model.
Article
Mathematics, Applied
Nader Masmoudi, Mohamed Lazhar Tayeb
Summary: This study analyzes an approximation by diffusion of a nonlinear Boltzmann equation for Fermi-Dirac statistics. The model is applicable to an unbounded velocity space and Poisson coupling. The control of the distribution function and the transition to the limit are achieved through careful analysis of entropy and entropy-dissipation using the duality method.
JOURNAL DE MATHEMATIQUES PURES ET APPLIQUEES
(2022)
Article
Chemistry, Physical
Remya Ann Mathews Kalapurakal, Ethayaraja Mani
Summary: Inverse patchy colloids (IPC) have unique patch structures with mutual repulsion and attraction. By modeling with Debye-Huckel theory, we derived the effective interaction energy expression for a pair of IPCs, accurately describing particle interactions under various experimental conditions.
MOLECULAR SIMULATION
(2022)
Article
Electrochemistry
S. M. Rezaei Niya, J. Andrews
Summary: This study investigates the charge storage and distribution in a porous conductive carbon material in the presence and absence of electrolyte using the Poisson-Nernst-Planck equations for the first time. The results show that the charge distribution inside the pores is negligible without electrolyte. With cations and anions present in the electrolyte, the distribution of charge on the pore surfaces and the ionic concentration gradients in the electrolyte are numerically evaluated. The modeling predictions suggest a shift in the pore structure from a classic electric double layer to a near-uniform ion storage for smaller nano-level pores.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Jun Huang, Yufan Zhang
Summary: This study investigates how an electrochemical cell conforms to the open-circuit voltage (OCV) given by the Nernst equation, and shows how electrode properties are canceled through a pedagogical derivation. By analyzing the charge and potential distributions at the electrode-electrolyte interface, the authors derive an equilibrium Poisson-Nernst equation that explains how the charge distribution is determined by the chemical potentials of redox species. Using a H-2/O-2 fuel cell as an example, the authors elucidate how the electrodes regulate their electron tails to abide by the Nernst equation. The study also reveals a counterintuitive phenomenon where two electrodes made of the same transition metal display different potentials of zero charge, indicating distinct behaviors of transition metal double layers compared to sp metal double layers.
FRONTIERS IN CHEMISTRY
(2022)
Article
Computer Science, Interdisciplinary Applications
Alexandre Mouton, Thomas Rey
Summary: Spectral methods are an effective way to approximate collisional kinetic equations, and they are characterized by high accuracy and fast algorithms. In this study, the spectral-Galerkin algorithm introduced by Filbet et al. (2012) is employed, along with new parallelization techniques, to investigate conjectured properties of the solutions to the Boltzmann-Nordheim equation. Numerical observations demonstrate both Bose-Einstein condensation and Fermi-Dirac relaxation.
JOURNAL OF COMPUTATIONAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Hridis K. Pal, Osakpolor Eki Obakpolor, Pavan Hosur
Summary: This paper investigates the surface dc conductivity of Weyl semimetals and discovers an anomalous contribution that is independent of surface scattering time. This anomalous part appears at nonzero temperature and doping, and increases quadratically with both, with a universal ratio of coefficients. The authors argue that this can be interpreted as the conductivity of an effective interacting surface fluid that coexists with the Fermi arc metal.
Article
Physics, Multidisciplinary
Evgenii Ievlev, Michael R. R. Good
Summary: This article investigates the relationship between classical electromagnetic radiation and the Fermi-Dirac spectral distribution emitted by an accelerated electron and a scalar field in the moving mirror model.
Article
Chemistry, Physical
Panpan Zhang, Xu Wang, Yangyang Yang, Haifeng Yang, Chunsheng Lu, Mingru Su, Yu Zhou, Aichun Dou, Xiaowei Li, Xiaochuan Hou, Yunjian Liu
Summary: In this study, the influence of transition metal doping on the electronic and mechanical properties and electrochemical performance of 2HMoS2/NC was investigated using Cobalt (Co) as an example. Co doping was found to effectively improve the electronic conductivity and active site areas of 2H-MoS2/NC at different positions, optimizing the adsorption and diffusion capability of potassium ions. Furthermore, the study revealed the optimal roles of different types of nitrogen atoms in kinetic adsorption, diffusion, and interfacial stability of potassium ions. These findings provide guidance for the experimental design of high rate 2H-MoS2/NC electrode materials and the optimal design of other functional composite materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zeeshan Ajmal, Mahmood Ul Haq, Shahid Zaman, M. K. Al-Muhanna, Anuj Kumar, Mohammed M. Fadhali, Siwar Ben Hadj Hassine, Muhammas Qasim, K. F. Alshammari, Ghulam Abbas Ashraf, Abdul Qadeer, Adil Murtaza, Sulaiman Al-Sulaimi, Huaqiang Zeng
Summary: This study presents a novel heterojunction structure (SrTiO3/CN-TAL10.0) for enhanced photocatalytic water splitting (PWS). The incorporation of thiophenedicarboxaldehyde (TAL) through copolymerization significantly improves the photocatalytic activity of carbon nitride (CN) while maintaining its photostability performance. The optimized composition allows efficient isolation of photoinduced charge carriers and enhanced charge transport, resulting in a remarkable increase in overall photocatalytic efficiency.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Angela Arnosa-Prieto, Patricia Diaz-Rodriguez, Manuel A. Gonzalez-Gomez, Pelayo Garcia-Acevedo, Lisandra de Castro-Alves, Yolanda Pineiro, Jose Rivas
Summary: Macrophages can exhibit different phenotypes depending on the microenvironment and the characteristics of magnetic iron oxide nanoparticles (MNPs). This study demonstrates that the concentration and morphology of MNPs can influence the polarization of macrophages. The findings have implications for therapeutics targeting tissue regeneration and tumor progression.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yu Fang, Cheng-Ye Zhu, Hao-Cheng Yang, Chao Zhang, Zhi-Kang Xu
Summary: This study demonstrates the advantages of vacuum-assisted interfacial polymerization (VAIP) in fabricating polyimide nanofiltration membranes. By using vacuum filtration, aqueous solutions of PIP can be evenly distributed on different microfiltration substrates, leading to the fabrication of uniform and ultra-thin polyamide layers with excellent performance. The membranes exhibit high rejection rates and water permeance, as well as satisfactory long-term stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Isaac J. Gresham, Edwin C. Johnson, Hayden Robertson, Joshua D. Willott, Grant B. Webber, Erica J. Wanless, Andrew R. J. Nelson, Stuart W. Prescott
Summary: Understanding the interactions between polymers and surfactants is crucial for optimizing commercial systems. This study tested the behavior of polymer-surfactant systems, revealing that they do not behave like polyelectrolytes in the presence of salt. Additionally, the structure of polymer-surfactant complexes under confinement differs from that of polyelectrolytes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yunxiao Xie, Cui Liu, Jie Zhang, Yan Li, Bin Li, Shilin Liu
Summary: This study aimed to improve the microstructure and rheological properties of W/W Pickering emulsions by crosslinking sodium alginate at the water-water interface, thereby enhancing the activity of encapsulated probiotics in simulated gastrointestinal digestion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Sang Ho Lee, Yige Sun, Patrick S. Grant
Summary: This research developed an effective approach to enhance the charging rates of lithium ion batteries (LIBs) by strategically incorporating carbon nanotube (CNT) conductivity boosters into Li4Ti5O12 (LTO) electrodes. Multi-layer architectures comprising CNT-rich and CNT-free LTO electrode layers were manufactured using a layer-by-layer spray coating method to promote charge transfer kinetics of high mass loading electrodes. The best performing multi-layer was paired with a spray-coated LiFePO4 (LFP) positive electrode, resulting in attractive power performance that outperformed conventional LTO || LFP combinations.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jingwei Liang, Shaobin Li, Fengbo Li, Li Zhang, Yufeng Jiang, Huiyuan Ma, Kun Cheng, Liang Qing
Summary: A molybdenum-regulated self-supporting electrode material with rich vacancy defects has been successfully synthesized and shows exceptional catalytic activities and stability for electrocatalytic overall water splitting. This study provides a new perspective for the design and synthesis of non-precious metal bifunctional electrocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jonas Blahnik, Jennifer Schuster, Rainer Mueller, Eva Mueller, Werner Kunz
Summary: This study investigates the relationship between the morphology of PMMA monopolymers and PMMA-PHEMA copolymers with the expected nature of surfactant-free microemulsions (SFMEs) before polymerization. It is found that previously mesostructured, surfactant-free mixtures can produce porous polymers of different morphologies, while unstructured, oil-rich regions lead to solid, transparent polymers without nanostructured morphologies. Additionally, a surfactant-based reference system shows similar phase behavior and polymer morphologies as the comparable surfactant-free system, indicating the importance of the hydrotropic behavior of HEMA in this system.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zheng-Fen Pu, Wen-Zhi She, Rong Sheng Li, Qiu-Lin Wen, Bi-Chao Wu, Chun-Hua Li, Jian Ling, Qiue Cao
Summary: This study synthesized two framework-isomeric covalent organic frameworks (COFs) and discovered that the light scattering signal of COFs can be used for the analytical detection of lead ions. By controlling synthesis conditions and introducing regulators, the morphology of COFs could be controlled and framework-isomeric COFs could be precisely synthesized.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yuchen Weng, Ying Hong, Jingyu Deng, Sicheng Cao, Li-Juan Fan
Summary: This paper reports the preparation of dynamic color-changing fluorescent polymer nanoparticles (PNPs) by constructing a fluorescence resonance energy transfer (FRET) pair. The PNPs show excellent anti-counterfeiting effects and reproducibility. The study demonstrates a promising encryption strategy that can achieve multiple outputs with simple operation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Guodong Liu, Zijian Wang, Jianing Wang, Hanbin Liu, Zhijian Li
Summary: This study investigates the combination of multicolor switchable polyaniline (PANI) electrode and 1-methyl-4,4'-bipyridyl iodide (MBI), which demonstrates superior optical properties in visible and near-infrared light modulation, as well as excellent electrochemical performances. This combination can be used to develop novel electrochromic devices for applications in smart packaging, smart labels, and flexible smart windows.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Huying Yan, Yang Guo, Xingzhi Bai, Jiawei Qi, Haipeng Lu
Summary: By modifying Ti3C2Tx through heterogeneous interface engineering, optimized impedance matching is achieved, leading to enhanced electromagnetic wave absorption performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Kehu Zhang, Yang Zhou, Silvia Moreno, Simona Schwarz, Susanne Boye, Brigitte Voit, Dietmar Appelhans
Summary: This article presents an advanced crosslinking strategy to fabricate clustered polymersomes using host-guest interactions. By controlling the input of crosslinker and environmental conditions, reversible aggregation and disassembly of these polymersomes can be achieved. The size and structure of these clustered polymersomes can be regulated and visualized through a fluorescent enzymatic cascade reaction.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Junjie Xu, Weixiong Huang, Ruiling Li, Li Li, Jinjin Ma, Jiaou Qi, Haiyan Ma, Min Ruan, Lilin Lu
Summary: In this study, a potassium doped palladium catalyst was developed for acetylene hydrogenation, showing excellent catalytic performance and durability. The doping of potassium effectively weakened the adsorption of ethylene, improved ethylene selectivity, and lowered the barriers of hydrogen activation and transfer reactions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)