Article
Polymer Science
Jinghao Jin, Seung Ho Yeom, Hyung Ju Lee, Chang Kyoung Choi, Seong Hyuk Lee
Summary: The study examines the impact of nozzle spacing on the electric field and nanofiber diameter uniformity in a four-nozzle electrospinning system. Numerical simulations using COMSOL Multiphysics 5.6 reveal that increasing the nozzle spacing results in higher average electric field intensity and decreased variations of electric field intensity. Experimental results with gelatin solution demonstrate that increasing the nozzle spacing leads to increased nanofiber diameter uniformity and decreased average diameter. The study also investigates the effects of voltage and nozzle-to-collector distance on fiber diameter, showing that increasing voltage decreases fiber diameter while increasing nozzle-to-collector distance increases it.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Chen Tian, Lei Yuan, Jingkun Yu, Danbin Jia, Tianpeng Wen, Guoqi Liu, Hongxia Li
Summary: The polarity of the electric field has a significant impact on the decarburization, erosion, and clogging processes in the submerged entry nozzle made of rare earth steel. Adjusting the electric field polarity can effectively reduce these processes and ensure smooth production in continuous casting of rare earth steel.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Zhendong Wang, Qinglin Shan, Yu Gao, Hongwei Pan, Boxun Lu, Juwen Wen, Heng Cui
Summary: In this study, the wave height and frequency of mold level fluctuations were analyzed, and the correlation between flow field, wave height, and frequency was discussed. The results show that the frequency of the fluctuations is mainly influenced by the wavelength, and increasing the surface velocity has a greater impact on the amplitude of the fluctuations. Waves with frequencies below 0.1 Hz have the largest amplitude variation and have the most significant effect on the fluctuations.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2023)
Article
Physics, Fluids & Plasmas
Xinyu Liu, Hanwen Deng, Yiming Sun, Xiaoming Kang
Summary: This paper presents a computational fluid dynamics model to describe the formation of the meniscus in the ionic liquid electrospray process. The model is validated by experiments and the influences of pore size, flow rate, and applied voltage on meniscus formation are studied. The findings provide important insights into the mechanism of meniscus evolution in the electrospray process.
PLASMA SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Albert Cisquella-Serra, Marc Galobardes-Esteban, Manuel Gamero-Castano
Summary: This article introduces a microfabrication technique for creating scalable multiemitter electrospray sources and demonstrates their excellent propulsive performance through testing. Design elements such as a network of microfluidic channels, accurate alignment, and a pipe-flow configuration contribute to the improved performance and protection of propellant.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Chen Tian, Lei Yuan, Yan Li, Danbin Jia, Tianpeng Wen, Guoqi Liu, Jingkun Yu, Hongxia Li
Summary: The decarburization of the nozzle plays a crucial role in affecting clogging behavior and steel quality. External electric fields directly impact and alter the decarburization, clogging, and reaction behavior between the nozzle and alloys in the steel. Utilizing interfacial electric field control methods could potentially solve decarburization and clogging issues in submerged entry nozzles.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Chengxu Qiu, Weixing Zhou, Zhe Chen, Chuanwei Wu
Summary: A method is proposed to improve the performance of swirl nozzle spray using electric field. A pair of symmetrical needle electrodes is arranged perpendicular to the fuel injection direction. The influence of electrode height, distance, and voltage on spray morphology is studied. The results show that arranging the electrodes at the fuel-film breakup height can reduce the average fuel drop size by up to 35.8% and affect the atomization performance.
JOURNAL OF ELECTROSTATICS
(2023)
Article
Chemistry, Analytical
Jianqiu Zhao, Na Li, Xinyu Zhou, Zihan Yu, Mei Lan, Siyu Chen, Jiajia Miao, Yulai Li, Guiying Li, Fang Yang
Summary: Cell lysis is an important step for protein research and various applications such as drug screening and cancer diagnosis. Current cell lysis methods have limitations, prompting the need for a fast, chemical-free, portable, and non-invasive device. In this study, an integrated microfluidic chip was designed to achieve E. coli lysis using an alternating current electric field, and the effects of voltage, frequency, and flow rate on lysis efficiency were investigated. The study provided a simple and efficient method for bacteria lysis in biology and biomedical applications.
Article
Materials Science, Composites
Heru Suryanto, Yudi Surya Irawan, Rudy Soenoko, Joseph Selvi Binoj, Azlin Fazlina Osman, Hakimah Osman, Jibril Maulana, Alamry Ali
Summary: This research investigates the effects of the frequency of the external electric field during the curing process on the interfacial properties of epoxy composites reinforced by Mendong fiber. The results show that treating the epoxy with a 1 kHz electric field improves the wettability properties and interface shear strength. However, increasing the frequency of the electric field leads to more interface damage and reduces the shear strength at the interface.
POLYMER COMPOSITES
(2023)
Article
Mechanics
Venkata Krisshna, Wanjiao Liu, Mark Owkes
Summary: Electrostatic rotary bell atomizers are commonly used in the automobile industry to apply paint. A computational simulation of three-dimensional near-bell atomization is performed in this work to investigate the effect of electrification on droplet size and charge characteristics. The results show that electrifying the setup leads to the production of smaller droplets and the electric field has a minor effect on primary atomization but a negligible effect on the size and stability of atomized droplets after secondary breakup. This cost-effective simulation method provides insights into the influence of the electric field in atomization.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2023)
Article
Meteorology & Atmospheric Sciences
Alexander V. Kozlov, Nikolay N. Slyunyaev, Nikolay V. Ilin, Fedor G. Sarafanov, Alexander V. Frank-Kamenetsky
Summary: The study investigates the impact of the Madden-Julian Oscillation (MJO) on the global electric circuit (GEC). The results show that the variations in both the ionospheric potential (IP) and surface potential gradient (PG) of fair-weather correlate significantly with the MJO phase. The dynamics of IP contributions follow the patterns of deep convection typical for the MJO. The study suggests that the GEC is an important part of the Earth system, reflecting climate variability on different timescales.
ATMOSPHERIC RESEARCH
(2023)
Article
Materials Science, Ceramics
Chen Tian, Lei Yuan, Tianpeng Wen, Jingkun Yu, Guoqi Liu, Hongxia Li
Summary: This study explores the application of La-Ce alloy in the casting process of rare earth steel to restrain clogging. The results show that the chemical mechanisms between La-Ce alloy and submerged entry nozzle (SEN) cannot be altered by electric field, but the speed of chemical reaction can be controlled. By applying a positive electric field, a stable interface reaction layer can be formed on the surface of SEN, limiting the formation of clogging.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Chen Tian, Lei Yuan, Xiaoming Liu, Qiang Wang
Summary: In this paper, the reaction behavior between a submerged entry nozzle (SEN) and molten steel with high Al content under the influence of an external electric field was studied. The results showed that a positive voltage promoted decarburization and interfacial reaction, while a negative voltage inhibited these behaviors. The polarity of the electric field applied on the SEN is crucial in determining the critical factor leading to clogging, whether it is the content of Al2O3 inclusions or the Al alloy content in the steel.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Energy & Fuels
Youngmin Kim, Jeong-Woong Hong, Min-Gyu Jeon, Dae Geun Park, Sung Hwan Yoon
Summary: The impact of AC electric fields on a nonpremixed coflow-jet flame was investigated. Four distinct flame behaviors were identified: oscillating flame with applied frequency, fluctuating flame, instability-induced extinction, and blowout. The study provides detailed analysis and discussion of each behavior and highlights the importance of the azimuthal component of the ionic wind on flame behavior.
Article
Environmental Sciences
Zhansheng Mao, Bo Liu, Xianzhi Fang, Jiawei Ma, Dan Liu, Zhisheng Gao, Melisa Munoz Castillo, Zhengqian Ye
Summary: This study explored the effects of alternating current (AC) electric field and fertilization on the phytoremediation efficiency of Cd-contaminated soil. The results showed that the application of AC electric field with organic fertilizer had the most significant promotion effect, increasing plant shoot Cd accumulation by 98.99%. There was a significant interaction between the electric field and fertilizer application, and the combination of AC electric field and Chinese milk vetch organic fertilizer resulted in the strongest improvement in plant Cd uptake.
JOURNAL OF SOILS AND SEDIMENTS
(2022)
