Article
Mechanics
Partha Sarathi Majee, Somnath Bhattacharyya
Summary: This study investigates diffusion of a charge regulated spherical polyelectrolyte nanogel under externally imposed ionic concentration gradient, taking into account various factors such as ion partitioning effects and chemiphoresis. The modified governing equations are numerically solved to obtain results in good agreement with existing analytical solutions. Diffusiophoresis mechanism is illustrated through measurements of induced electric field and effective charge density, showing dependence on electrokinetic parameters and higher diffusiophoretic velocity for pH > IEP compared to pH < IEP.
Article
Biochemical Research Methods
Chien Hsu, Chih-Yuan Lin, Amer Alizadeh, Hirofumi Daiguji, Wei-Lun Hsu
Summary: This study theoretically analyzes the electrophoretic behavior of spherical particles near the entrance of a charged nanopore and summarizes the dominant mechanisms governing particle behavior for different conditions.
Article
Chemistry, Physical
Makusu Tsutsui, Kazumichi Yokota, Yuhui He, Tomoji Kawai
Summary: A permittivity gradient approach is reported to amplify the ionic blockade characteristics of DNA in solid-state nanopore sensing. Positive gradients enhance ionic signals, while negative gradients cause adverse effects. This phenomenon provides a novel way to enhance the single-molecule sensitivity of nanopore sensing.
Article
Mechanics
Ali Shafiei Souderjani, Mostafa Bakouei, Mohammad Hassan Saidi, Mojtaba Taghipoor
Summary: The electrophoretic motion of hydrophobic particles in solid-state nanopores is numerically investigated. The Poisson, Stokes, and Nernst-Planck equations are simultaneously solved using the Newton-Raphson algorithm. The hydrophobic surface characteristics are described using the Navier-slip boundary condition with a wide range of slip lengths. The study examines the effects of electric field intensity, electrolyte concentration, and particle size on electrophoretic velocity, and manipulates the nanopore's size and surface charge density to separate hydrophobic and hydrophilic particles based on their slip lengths. The resistive pulse properties of particles with different slip lengths are also studied, showing potential application for resistive pulse sensing to determine particle slip length.
Article
Chemistry, Physical
Subrata Majhi, Somnath Bhattacharyya
Summary: A numerical study on the diffusiophoresis of a hydrophobic charged colloid driven by an imposed concentration gradient of an electrolyte is made. The study reveals the significant effects of particle hydrophobicity and electrolyte valence on diffusiophoresis.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Biochemical Research Methods
Charuni A. Amarasekara, Chathurika Rathnayaka, Uditha S. Athapattu, Lulu Zhang, Junseo Choi, Sunggook Park, Aaron C. Nagel, Steven A. Soper
Summary: Nanofluidics has shown promising applications in nucleic acid analysis, allowing for high-resolution free solution electrophoretic analysis. The use of thermoplastic nanochannels for the electrokinetic analysis of ribonucleotide monophosphates (rNMPs) has demonstrated efficient separation and identification of rNMPs, enabling the development of a new single-molecule sequencing platform.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Chemistry, Physical
Zheng Jia, Junseo Choi, Sunggun Lee, Steven A. Soper, Sunggook Park
Summary: Thermoplastic nanofluidic devices can manipulate surface charge density using multivalent cations for biomolecule resistive pulse sensing.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Multidisciplinary
Vinay Sharma, Nasim Farajpour, Lauren S. Lastra, Kevin J. Freedman
Summary: Nanopores are widely used in genome sequencing and DNA data storage, and the impact of hydrodynamic forces on DNA sensing in nanopores is still not well understood. In this study, the researchers conducted experiments and developed a computational model to analyze the effects of hydrodynamic flow on DNA transit time, capture rate, current blockade depth, and DNA folding in nanopores. The findings have important implications for DNA sensing technologies.
Article
Thermodynamics
Wei-Hao Huang, Chih-Chang Chang, Ruey-Jen Yang
Summary: This study conducted numerical simulations to investigate the thermoelectric response in nanofluidic channels with slip mechanism. The results showed that temperature-dependent ion electrophoretic mobility and thermoosmosis dominate the thermoelectric performance. This study provides valuable insights for developing efficient nanofluidic-based thermoelectric generators.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Multidisciplinary
Xianglong Lyu, Jingyuan Chen, Jiayu Liu, Yixin Peng, Shifang Duan, Xing Ma, Wei Wang
Summary: Understanding and controlling the swimming direction of synthetic nano- and micromotors is of great importance. By studying the effects of platinum oxides on the movement of micromotors, a new method for controlling the swimming direction of these motors has been discovered.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
S. Zhou
Summary: The study explores the impact of cylindrical pore electrode size on differential electrical capacitance and energy storage density curves using classical density functional theory. Results indicate that symmetrical high valence electrolytes enhance energy storage density, and smaller pore sizes exhibit saturation trends under certain voltage conditions.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Multidisciplinary
Yun Huang, Jianhe Guo, Yufan Li, Huaizhi Li, Donglei Emma Fan
Summary: 2D materials like MoS2 show unique performance in the field of micro/nanomachines and robots, and when combined with TiO2 can enhance light absorption capability, potentially allowing for solar-powered water disinfection.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yixin Peng, Pengzhao Xu, Shifang Duan, Jiayu Liu, Jeffrey Lawrence Moran, Wei Wang
Summary: This article proposes and experimentally confirms the rule that the speeds of self-diffusiophoretic colloidal motors scale inversely to their population density, while self-electrophoretic motors do not follow this rule. These rules are simple, powerful, and applicable to various colloidal motors.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Peng Xue, Mi Qu, Jie Shi, Youhong Jiang, Nana He, Tiqing Zhao, Shiwen Luo, Jia-Jun Zhang, Shiyuan Zhou, Yong Luo, Guangwen Chu, Hui Li, Jian-Feng Chen, Shi-Gang Sun, Hong-Gang Liao
Summary: This study used liquid cell transmission electron microscopy (TEM) to directly track the migration of microfluidic units at the nanoscale. An unexpected mass transfer phenomenon was discovered, where fluid units in the stagnant liquid layer migrated two orders faster during gas-liquid interface updating. Molecular dynamics simulations showed that the chemical potential difference between nanoscale liquid layers led to convective flow, greatly enhancing mass transfer on the surface.
Article
Chemistry, Multidisciplinary
Michal Macha, Sanjin Marion, Mukesh Tripathi, Mukeshchand Thakur, Martina Lihter, Andras Kis, Alex Smolyanitsky, Aleksandra Radenovic
Summary: This study investigates the use of xenon ion focused ion beam for scalable fabrication of large-area nanopores on atomically thin molybdenum disulfide membranes. The fabrication protocol allows for the creation of ultrathin membranes with tunable porosity and pore dimensions, while maintaining spatial uniformity across large areas. The structural and statistical data obtained from the fabricated membranes can be used to predict permeation properties at both individual pore and membrane-wide scales. This approach has the potential to enable a function-by-design approach to fabrication for applications such as osmotic power generation and desalination/filtration.
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)