Article
Chemistry, Multidisciplinary
Wenyao Zhang, Xinxi Liu, Kai Jiao, Qiuwang Wang, Chun Yang, Cunlu Zhao
Summary: This study reveals a new thermoelectric mechanism that significantly enhances the thermoelectric response in nanoconfined electrolytes by coupling the ion steric effect and ion thermodiffusion in electric double layers.
Article
Physics, Multidisciplinary
M. Ya Sushko, S. D. Balika
Summary: We study the role of the electrical double layer in the formation of the quasistatic electrical conductivity of nanosized particle suspensions. By modeling the microstructure of the suspension, we derive general integral relations for the desired conductivity that incorporate the effect of the electrical double layer. The model is demonstrated to accurately describe experimental data for latex suspensions in high ionic strength electrolyte solutions.
Article
Chemistry, Physical
Andrei S. Dukhin, Alexander Reisel
Summary: The traditional Isolated Double Layer model becomes inadequate in concentrated dispersions when particles are closer together, leading to DL overlap. Experimental study confirmed the prediction of quasi-homogeneous DL theory regarding changes in electrophoretic mobility.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Biochemical Research Methods
Sung Hee Ko, Pyeong Jun Park, Jongyoon Han
Summary: In this paper, a rigorous theoretical and experimental study on macromolecule sieving in a slanted nanofilter array was presented. The relationship between sieving conditions and efficiency as well as the hindrance effects on sieving were detailed. This study provides insights into designing a slanted nanofilter array for specific applications and understanding sieving principles in the nanofilter array.
Article
Biochemical Research Methods
Sung Hee Ko, Pyeong Jun Park, Jongyoon Han
Summary: This paper presents theoretical and experimental studies on macromolecule sieving in slanted nanofilter arrays. The authors derive a theoretical solution for size-dependent molecule sieving and validate it using experimental results. The study reveals the relationship between sieving conditions and efficiency, as well as the impact of multiple hindrance effects.
Article
Chemistry, Physical
Dagmawi B. Tadesse, Drew F. Parsons
Summary: In this study, we analyze the total free energy of a supercapacitor with a composite diffuse layer (CDL) modeled by a steric repulsive potential. Using a simple approximation to the Bikerman steric potential, we derive an analytical expression for the total free energy of the supercapacitor. The analytical expression matches the exact numerical calculation with a relative error close to 1% at high potential, providing an upper bound for more accurate models. We also provide a maximum upper bound for the energy as the bulk concentrations approach the ion concentration cap. The relative contribution of the steric interaction to the total free energy is analyzed, showing that at high voltages, the steric free energy is comparable to the electrostatic free energy and introduces ion-size effects.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Elena Shlyakhova, Alexander Okotrub, Yuliya Fedoseeva, Ekaterina O. Fedorovskaya, Elena A. Mel'gunova, Maxim S. Mel'gunov, Victor O. Koroteev, Anna A. Makarova, Jisheng Zhou, Huaihe Song, Lyubov G. Bulusheva
Summary: In this study, porous carbon materials with a large specific surface area and high volume of mesopores were successfully synthesized using iron-doped calcium tartrate as a template precursor and ethanol as a carbon source. The incorporation of iron promoted graphitization of the carbon layers and led to the formation of small mesopores, resulting in materials with high specific surface area and pore volume, as well as good specific capacitances and rate capabilities.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Bo-Yu Han, Tzu-Ying Pan, Yi-Chen Wu, Jiann T. Lin, Hsien-Hsin Chou, Chun-Ting Li
Summary: Bulky N-substituents of 4-(hexyloxy) phenyl-substituted and 4-(hexylthio)phenyl-substituted triphenylamine were successfully introduced into double-anchored phenothiazine dyes as capping moieties for metal-free organic sensitizers in dye-sensitized solar cells. The N-substituent of 4-(hexyloxy)phenyl-substituted TPA provided the best steric matching and resulted in a compact dye packing and an integrated shelter layer on the TiO2 surface. The DSSC performance achieved with this modification was higher than that of the reference N719-based and HL5-based DSSCs.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Keming Song, Xiang Wang, Zhengkun Xie, Zhiwei Zhao, Zhe Fang, Zhengfeng Zhang, Jun Luo, Pengfei Yan, Zhangquan Peng, Weihua Chen
Summary: An ultrathin solid-electrolyte interphase (SEI) induced by Cu+-tailored double electrical layer (EDL) has been reported to suppress electrolyte consumption and enhance the cycling stability of CuS anode in sodium-ion batteries. The unique EDL with SO3CF3-Cu complex absorbing on CuS can be reduced to CuF2-rich SEI, which enables the formation of an ultrathin and stable SEI film, minimizing electrolyte consumption and reducing the activation energy of Na+ transport. The modified CuS electrode exhibits high capacity retention of 402.8 mAh g(-1) after 7000 cycles, providing important insights for high-stability electrode construction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Zheng Gong, Agilio A. H. Padua
Summary: Understanding the impact of molecular structures of ionic liquids on their properties at electrified interfaces is crucial for designing ILs for electric applications. Side chains such as octyl or benzyl groups can significantly alter the interfacial structures, affecting capacitance. The speed of ion transfer is primarily determined by local displacement and reorientation of ions, rather than macroscopic bulk dynamics.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Obula Reddy Kummitha, K. M. Pandey, Anil Kumar Reddy Padidam
Summary: The research introduces an innovative fuel injection strut to enhance mixing performance by increasing interactions between shock wave and shear mixing layer. Numerical analysis shows that the new strut significantly improves mixing efficiency compared to the basic wedge design.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Computer Science, Interdisciplinary Applications
Sungkwon Lee, Klaus-Jurgen Bathe
Summary: This study introduces a new development of overlapping finite elements, enhancing the evaluation of element matrices and solution of governing equations with a novel ingredient. The new approach provides more generality and ease of use compared to meshless solution schemes, with applications in two-and three-dimensional solid analyses.
COMPUTERS & STRUCTURES
(2022)
Article
Engineering, Electrical & Electronic
S. S. Fouad, B. Parditka, M. Nabil, E. Baradacs, S. Negm, Zoltan Erdelyi
Summary: In this study, we investigated the influence of a Cu interlayer on the structure and optical properties of ZnO layers. The Cu interlayer was deposited by magnetron sputtering, while the ZnO layers were deposited by atomic layer deposition. The results showed that increasing the Cu interlayer thickness led to an increase in crystallite size and a decrease in the optical energy band gap. Additionally, doping ZnO with different thicknesses of Cu interlayer enhanced its optical activity and electrical conductivity.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Geological
Leonardo T. P. Meireles, Einar M. Storebo, Michael J. Welch, Ida L. Fabricius
Summary: The study assessed the strength and stiffness of high and low porosity outcrop chalk plugs saturated with various fluids. Results showed that the level of disjoining pressure between chalk grains induced by saturating fluid significantly affected the core plugs' strength and stiffness parameters.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2021)
Article
Chemistry, Analytical
Chang-Run Wu, Shin-Li Wang, Po-Hsuan Chen, Yu-Lin Wang, Yu-Rong Wang, Jung-Chih Chen
Summary: This study investigates the mechanism of enhanced electric-double-layer field-effect-transistor biosensors for protein detection in high ionic strength solutions. By enhancing capacitance, optimizing gate voltage and salt concentration, and utilizing AC impedance measurement, the sensitivity of the biosensors can be increased, allowing for direct protein detection within 5 minutes without complex sample dilution.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
