Journal of Electrostatics最新文献_第8页

Field electron emission in the atmospheric pressure range 大气压范围内的场电子发射

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2023-11-29 DOI: 10.1016/j.elstat.2023.103867

L. Trascinelli , K.L. Aplin

引用次数: 0

Capacitance of a conducting hollow cylindrical shell in a closed form 封闭形式的导电空心圆柱壳的电容

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2023-11-01 DOI: 10.1016/j.elstat.2023.103866

E. Romashets , M. Vandas , C. Şen

引用次数: 0

Space charge and its effects on oil-paper insulation in power transformers: A review 电力变压器中空间电荷及其对油纸绝缘的影响

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2023-11-01 DOI: 10.1016/j.elstat.2023.103861

Raymon Antony Raj

引用次数: 0

Characterization of corona discharge treatment on PTFE surface for TENG applications 聚四氟乙烯表面电晕放电处理的表征

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2023-11-01 DOI: 10.1016/j.elstat.2023.103865

Euihyun Jo , Hyerim Kim , Young Jun Park , Hyungmin Park , Minbaek Lee

引用次数: 0

The discharge characteristics and benzene degradation performance of a three-electrode DBD reactor powered by dual AC power generators 研究了双交流发电机驱动的三电极DBD反应器的放电特性及苯降解性能

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2023-11-01 DOI: 10.1016/j.elstat.2023.103864

Xiaoran Fan, Kefeng Shang, Ying Chen, Nan Jiang, Na Lu, Jie Li

引用次数: 0

A surface dielectric barrier discharge reactor for biological treatments 一种用于生物处理的表面介质阻挡放电反应器

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2023-10-24 DOI: 10.1016/j.elstat.2023.103863

Tamer Akan , Çağrı Durmuş

{"title":"A surface dielectric barrier discharge reactor for biological treatments","authors":"Tamer Akan , Çağrı Durmuş","doi":"10.1016/j.elstat.2023.103863","DOIUrl":"https://doi.org/10.1016/j.elstat.2023.103863","url":null,"abstract":"<div>Antimicrobial plasma effects are promising for therapeutic applications like wound healing, cancer/tumor treatment, or pathogen-associated skin or dental diseases, but also in hygiene, food, and agriculture processing. Dielectric Barrier Discharge (DBD) reactors are the most widely used systems for antimicrobial purposes because they can use atmospheric air as a gas, do not require a vacuum, and are simple, inexpensive, and easy to use. However, when DBD plasma is applied directly to the biological sample, discharge current may pass through the biological sample, causing the plasma to transit to spark discharge and thus causing damage to the biological sample. Since Surface Dielectric Barrier Discharge (SDBD) plasmas can be generated far from the sample, they offer great advantages in the application of non-thermal plasma in extremely large volumes. While SDBD plasmas are generally generated on the lid of the container in which the sample is placed and the plasma species are expected to reach the sample, in this study, SDBD plasmas were produced on the container itself. A new SDBD reactor that can be applied to samples of various sizes and properties for antimicrobial purposes was manufactured. Gram-negative E. coli, gram-positive S. aureus and E. faecalis planktonic bacteria were placed in the reactor and inactivated for 10 min by exposure to non-thermal plasma. A plasma sterilization unit with 31.4 W power, practical, user-friendly, developed for bio-applications, with a 6.2-liter capacity.</div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49766112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanisms of like-charge attraction in many-body systems 多体系统中同电荷吸引机制

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2023-10-18 DOI: 10.1016/j.elstat.2023.103859

Xuwei Zhang (张旭炜) , Weidong Chen (陈慰东) , Min Wang (王敏) , Ho-Kei Chan (陈浩基)

{"title":"Mechanisms of like-charge attraction in many-body systems","authors":"Xuwei Zhang (张旭炜) , Weidong Chen (陈慰东) , Min Wang (王敏) , Ho-Kei Chan (陈浩基)","doi":"10.1016/j.elstat.2023.103859","DOIUrl":"https://doi.org/10.1016/j.elstat.2023.103859","url":null,"abstract":"<div>The physics of like-charge attraction in a collinear binary system of <math><mi>N</mi></math> particles has been investigated via a polarizable-ion model. It was found that like-charge attraction between an array of <math><mrow><mo>(</mo><mi>N</mi><mo>−</mo><mn>1</mn><mo>)</mo></mrow></math> type-A particles on the left and a single type-B particle on the right is conditional upon a sufficient degree of dissimilarities between the two types of particles. By assuming that (1) the particles of one type are strongly polarizing (but weakly polarizable) such that the Coulomb fields they produce are dominant all over other electric fields, and that (2) the particles of the other type are strongly polarizable (but weakly polarizing) such that their Coulomb-field-induced dipoles are the only polarization effects worth considering, a good agreement between our approximate analytic theory and exact numerical solutions has been obtained. Our analytic results show that the attractive components of the electrostatic force between the two types of particles could be thought of as arising from imaginary charges induced in the polarized particle(s) by the polarizing ones, resulting in a screening of the real charge(s) in the polarized particle(s). Like-charge attraction occurs if the field contributions from the imaginary charges collectively outweigh the field contribution(s) from the real charge(s).</div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49753193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Finite element analysis of a 3D triboelectric nanogenerator for biophysical health monitoring applications 用于生物物理健康监测的三维摩擦电纳米发电机的有限元分析

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2023-10-18 DOI: 10.1016/j.elstat.2023.103862

Shivani Gupta, Yogita Batra

{"title":"Finite element analysis of a 3D triboelectric nanogenerator for biophysical health monitoring applications","authors":"Shivani Gupta, Yogita Batra","doi":"10.1016/j.elstat.2023.103862","DOIUrl":"https://doi.org/10.1016/j.elstat.2023.103862","url":null,"abstract":"<div>The Triboelectric nanogenerator (TENG) has numerous applications in biophysical health monitoring due to its small size, lightweight, and economical use. The triboelectric effect occurs when two triboelectric materials with opposite polarities come into contact or rub against each other. This paper presents the simulated output performance of a three-dimensional TENG with two opposite dielectric circular layers separated by a distance of 0.05 μm. The bottom negative layer of polytetrafluoroethylene (PTFE) with a 0.5 μm diameter and 0.1 μm thickness has a negative aluminium electrode with the same dimensions. The top of the negative layer has cylindrical surface morphology. A layer of copper serves as both a positive layer and electrode with a diameter of 1 μm and a thickness of 0.1 μm. Furthermore, for analysis, PTFE is replaced by polyvinyl chloride (PVC) and polyethylene and the results are compared. The Finite Element Analysis (FEA) was used to analyze the geometry, employing a combination of Solid mechanics and Electrostatic module of COMSOL Multiphysics 5.6 software. The result shows that a maximum output voltage of 35.9 V was observed for an applied pulse pressure of 3 kPa as input. The results indicate that the TENGs have the potential to be used for various devices and wearable healthcare monitors.</div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49759542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The equilibrium of particles electrostatically confined by external forces and the competition between the electrostatic interaction and gravitational field 受外力静电约束的粒子的平衡以及静电相互作用与引力场之间的竞争

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2023-10-16 DOI: 10.1016/j.elstat.2023.103860

J.W. Sirpa-Poma , F. Ghezzi , G.M. Ramírez-Ávila

{"title":"The equilibrium of particles electrostatically confined by external forces and the competition between the electrostatic interaction and gravitational field","authors":"J.W. Sirpa-Poma , F. Ghezzi , G.M. Ramírez-Ávila","doi":"10.1016/j.elstat.2023.103860","DOIUrl":"https://doi.org/10.1016/j.elstat.2023.103860","url":null,"abstract":"<div>This study sets out to describe the interaction of charged confined particles with a gravitational field. The system consisted of charged particles interacting electrostatically between themselves and with a confining box whose walls have a linear charge distribution. We studied numerically several configurations including the introduction of a tilt, that takes into account the Earth’s gravitational field. In our analysis, we included the <math><mi>α</mi></math> parameter for describing the position of the center of mass and its evolution according to the influence of the box size. We also studied in detail the competition between the gravitational field and electrostatic forces over the system. Such a competition determines the shape and size of the distributed charges. When the electrostatic force is dominant, the charges are distributed almost symmetrically. Whereas, when the gravitational field is preponderant, the distribution of particles tends to have a hive-like shape and then as the tilt angle increases the distribution is flattened. This effect is exacerbated when the particles have bigger masses and the inclination is higher. From a physical analysis, we obtained an expression to determine the center of mass of the distributed particles, depending on the box’s size and other physical parameters. Finally, based on the data analysis, we obtained fitting equations for the gravitational (logarithmic) and electrostatic (exponential) energies as a function of the enveloping area.</div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49727610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modal analysis of EHD jets through the SVD-based POD technique 基于svd的POD技术对EHD射流进行模态分析

IF 1.8 4区工程技术

Journal of Electrostatics Pub Date : 2023-09-28 DOI: 10.1016/j.elstat.2023.103858

Zelu Yan , Ji Gong , Christophe Louste , Jian Wu , Jian'an Fang

{"title":"Modal analysis of EHD jets through the SVD-based POD technique","authors":"Zelu Yan , Ji Gong , Christophe Louste , Jian Wu , Jian'an Fang","doi":"10.1016/j.elstat.2023.103858","DOIUrl":"https://doi.org/10.1016/j.elstat.2023.103858","url":null,"abstract":"<div>An EHD flow has complex characteristics with superimposed characteristic structures of various scales due to the coupling effect of the electric and flow fields. This paper provides a new research perspective on active control techniques of EHD flows by unraveling the large-scale dynamic structure of the dominant electroconvection from the manifold of the jet. The SVD-based POD technique in our work marks the first comprehensive investigation of modal analysis for EHD jets, aiming at extracting reduced-order modes that capture the main features and exploring the mechanisms that govern these jets through a deeper understanding of dynamic physics. The findings indicate that large-scale coherent structures that determine the EHD flows regularly emerge in the low-order modes, and fine-scale vortex structures typically appear in the high-order modes. In addition, the POD-based flow field recovery technique can effectively remove the spurious vectors from the PIV dataset by simply excluding the high-order modes from the expansion during reconstruction.</div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49753575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0