Article
Chemistry, Physical
Run Liu, Yi-Bo Wang, Shu-Wei Yang, Han-Wu Liu, Yan-Ru Yang, Xiao-Dong Wang, Duu-Jong Lee
Summary: Through molecular dynamics (MD) simulations, the study investigates the bouncing dynamics of nanodroplets impacting a hydrophobic surface under electric fields with various field strengths and directions. The impacts of the electric fields on the bouncing dynamics of nanodroplets are significant, especially when the field strength exceeds 0.08 V A-1 and the field direction is altered.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Sanchari Bhattacharjee, Sandip Khan
Summary: Molecular dynamics simulations were conducted to study the wettability of hydrophilic and hydrophobic imidazolium-based ionic liquid nano-droplets on a graphite surface under a perpendicular electric field. The results showed that the electric field significantly influenced the orientation of water dipoles, charge distribution, contact angle, and hydrogen bonds, leading to shape deformation and ion depletion from the liquid-vapor interface of the droplet, which depended on the hydrophilicity or hydrophobicity of the ILs.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Biochemical Research Methods
Weidong Fang, Zhi Tao, Haiwang Li, Shuai Yin, Tiantong Xu, Yi Huang, Teckneng Wong
Summary: In this study, we designed and fabricated a improved flow-focusing microchannel configuration and a non-contact type of electrode for systematic investigation of AC-electric-field-controlled coalescence of multi-component droplets at the microscale. The experimental results showed high controllability of droplet coalescence by adjusting the electrical conditions. The fluid properties including electric permittivity, conductivity, and surface tension significantly affected the merging behavior. The proposed method also achieved precise fabrication of Janus droplets, offering potential applications in chemical synthesis, bioassay, and material synthesis.
Article
Materials Science, Multidisciplinary
Dandan Zhang, Yipeng He, Rumin Wang, Alan Taub
Summary: In this study, the kinetics of carbon nanotube (CNT) migration in an electric field were investigated. It was found that the migration rate of CNTs is linearly proportional to the electric field strength, while the CNT concentration and length distribution have minimal effects on the migration velocity. This relationship can be used to manipulate the spatial distribution of CNTs in polymer composites to enhance their mechanical, thermal, and electrical properties.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Analytical
Nihal Deligonul, Ilyas Yildiz, Sema Bilgin, Isa Gokce, Omer Isildak
Summary: Developing a selective sensor for a target metal type is challenging. In this study, a novel polymeric membrane electrode (PME) was developed using Green Fluorescent Protein (GFP) as an ionophore for the determination of bismuth ions. The PME exhibited high sensitivity and Nernstian behavior.
MICROCHEMICAL JOURNAL
(2023)
Article
Physics, Multidisciplinary
Chi Xu, Jiaxian Li, Min Wei, Xiaoyan Zhou, Hangjun Lu
Summary: The structure and stability of nitrogen hydrate confined in a single-walled carbon nanotube were studied under an external electric field using molecular dynamics simulations. The results showed that the direction of the electric field has a significant impact on the structure and distribution of nitrogen molecules in the nanotube. A parallel electric field destabilizes the hydrate and releases nitrogen molecules, while a vertical electric field redistributes nitrogen molecules from the core to the shell. The occupancy of nitrogen molecules follows a sigmoid-like function as the electric field direction changes. These findings can contribute to the development of methods for controlling gas release and encapsulation using electric fields.
Article
Thermodynamics
Yi Lu, Dong Liu
Summary: This paper proposes a new strategy to enhance the critical heat flux (CHF) by using electrowetting (EW) to tailor the far-field and near-field effects of CHF. With electrowetting, the instability of the liquid-vapor interface is increased, the apparent contact angle is reduced, and the lateral expansion of bubbles over the heating surface is restrained by a resistive electric force, all contributing to the improvement of CHF. A comprehensive theoretical model is developed to understand the effects of the electric field on various aspects of CHF, and experiments are conducted to validate the theoretical model.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Engineering, Chemical
Weiwei Zheng, Jingcheng Xu, Liya Wang, Jialu Zhang, Wenhai Chu, Jia Liu, Lijun Lu, Chen Cai, Kaiming Peng, Xiangfeng Huang
Summary: This study successfully separated micro-/nano-paraffin in water emulsions stabilized by SDS using a electric field and superhydrophilic fibrous membranes, achieving improved flux and oil removal efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Multidisciplinary
Muthusamy Saranya, Janne T. Koivisto, Ana C. M. Carvalho, Fernando Sato, Andrea Lassenberger, Lionel Porcar, Baleeswaraiah Muchharla, Saikat Talapatra, Birgitte H. McDonagh, Lauriane Janssen, Olli Pitkanen, Minna Kellomaki, Krisztian Kordas, Gabriela S. Lorite
Summary: Injectable scaffolds are a promising strategy for tissue repair and regeneration. The design of an aligned injectable hydrogel-based scaffold via remote-induced alignment is reported in this study. The use of low magnetic field to align carboxylated multi-walled carbon nanotubes into the hydrogel is demonstrated, showing potential for engineering functional tissues with specific cell orientation.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Chemistry, Physical
Jinrui Zhang, Kai Zhang, Weizong Wang, Aamir Shahzad, Yufeng Cheng, Guobiao Cai
Summary: This study investigated the permeation process of ionic liquid droplets actuated by electrowetting using molecular dynamics simulation. The results showed that the wettability of the substrate and the electric field strength have significant influences on the permeation process, while varying electric field polarity results in asymmetric permeation behavior. The study also revealed the critical roles of the electric field in elongating the droplet and providing the driving force for permeation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Thermodynamics
Meibo Xing, Hongfa Zhang, Hongbing Chen, Ruixiang Wang
Summary: This study experimentally investigated the solidification characteristic of aqueous carbon nanotubes (CNTs) nanofluids with various CNTs sizes and concentrations. The results showed that the addition of surfactant SDBS maintained the suspension stability of CNTs nanofluid and had a positive effect during the nucleation region. Furthermore, it was found that the size of CNTs significantly influenced the solidification characteristics.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Review
Chemistry, Multidisciplinary
Jianping Zou, Qing Zhang
Summary: Single-walled carbon nanotubes (SWCNTs) are considered a promising electronic material for the future of electronics, with sub-10 nm SWCNT-field effect transistors (FETs) outperforming Si-based FETs. Recent advances in SWCNT electronics focus on fundamental electronic structures, carrier transport mechanisms, and metal/SWCNT contact properties, highlighting subthreshold switching properties for low-power device operations. Challenges and prospects for future SWCNT-based electronics include material preparation, device fabrication, and large-scale ICs integration.
Article
Chemistry, Physical
Hengming Zhang, Bing Zhou, Xia Zhou, Shu Yang, Shasha Liu, Xueyu Wang, Shideng Yuan, Shiling Yuan
Summary: The collision behavior of heavy oil droplets in a complex oil-in-water emulsion system under direct current and non-electric field coalescence was studied using molecular dynamics. The results showed that the blocking effect of Sodium dodecyl sulfate (SDS) molecules on the contact of oil components in emulsified oil droplets disappeared at a certain electric field intensity, leading to the aggregation of oil droplets facilitated by the accumulation of asphaltene and resin. SiO2 nanoparticles promoted the coalescence of oil droplets.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Biochemistry & Molecular Biology
Ismail Abdulazeez, Billel Salhi, Asma M. Elsharif, Muhammad S. Ahmad, Nadeem Baig, Mahmoud M. Abdelnaby
Summary: The separation of oil/water emulsions has long been a focus due to their negative environmental impacts. Polyvinylidene fluoride (PVDF) membranes have advantages in terms of fabrication ease, high selectivity, and fair pore distribution. However, PVDF membranes are hydrophobic and prone to fouling, leading to a decline in flux. Adding wettable substrates during fabrication can improve fouling resistance.
Article
Energy & Fuels
Nimeti Doner, Hakan Burhan, Ramazan Bayat, Elif Esra Altuner, Fatih Sen
Summary: This article investigates thermopower waves (TWs) as a method of generating electrical energy through the combustion of chemical fuels with the help of nanomaterials. The study demonstrates that the addition of catalysts improves the energy production performance and activates the thermopower-based energy system.
