Journal of Electrostatics最新文献

{"title":"A novel algebraic topological method-based approach for evaluating stored electrostatic energy and 3D Maxwellian capacitance","authors":"Arun A. D ,&nbsp;Sharat Chandra ,&nbsp;S. Thirunavukkarasu ,&nbsp;M.P. Rajiniganth ,&nbsp;N. Malathi ,&nbsp;M. Sivaramakrishna","doi":"10.1016/j.elstat.2025.104065","DOIUrl":"10.1016/j.elstat.2025.104065","url":null,"abstract":"<div><div>This paper presents a new and first of its kind approach for numerical evaluation of stored electrostatic energy and capacitance using Algebraic Topological Method (ATM). The ATM is an alternative computing technique with certain advantages over conventional methods such as Finite Difference Method, Finite Element Method, and Method of Moments because it can formulate Multiphysics problems using direct discrete forms instead of partial differential equations. As a proof of concept, the approach has been validated in ideal 1D, 2D and 3D capacitors and the relative error was found to be &lt;1 % when compared with corresponding analytical solutions. Further the problems of capacitors with simple 3D geometries were solved and the relative error found to be &lt;3 % using refined mesh. The numerical stability of the proposed approach for different mesh sizes is investigated and the effect of modeling space is also studied in detail. Finally, the applicability of ATM is benchmarked with the Finite Element Method and experimental results in the case of real capacitors used in engineering applications. The results show that the proposed approach holds great potential for advancing the field of capacitor devices design and optimization by means of modeling and virtual prototyping.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"135 ","pages":"Article 104065"},"PeriodicalIF":1.9,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746752","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}

{"title":"Generation of microdischarge plasma in a pore: Effect of the pulse voltage parameters","authors":"Zitong Yang,&nbsp;Kefeng Shang,&nbsp;Mengji Fu,&nbsp;Na Lu,&nbsp;Nan Jiang,&nbsp;Jie Li","doi":"10.1016/j.elstat.2025.104061","DOIUrl":"10.1016/j.elstat.2025.104061","url":null,"abstract":"<div><div>Porous catalysts have important applications in plasma catalysis processes for nitrogen fixation, chemical synthesis, environmental pollutant treatment, and others. Understanding the generation mechanism of microdischarge in the pores is crucial for designing the catalysts suitable for plasma catalysis processes. In this paper, a two-dimensional fluid model was established to simulate the microdischarge characteristics in a pore at atmospheric pressure, mainly focusing on the effect of pulse voltage parameters, including voltage amplitude, pulse rise time, pulse width and pulse polarity. The results show that the pulse polarity significantly affects the production of microdischarge. Compared with negative pulse voltage, applying positive pulse voltage on the dielectric results in higher gas ionization rate and total ion density, and electron density as well as electron temperature are higher, which can promote the formation of microdischarge in the pore. In addition, high pulse voltage amplitude is more likely to produce microdischarge in a pore, while the pulse rising edge time and pulse width mainly affect electron density and electron energy. With the rise time increasing, the electron density increases significantly, and the electron temperature rises slightly. Moreover, the shorter the pulse width, the higher the electron temperature and electron energy. Higher pulse voltage, shorter pulse rise time and narrower pulse width can result in stronger electric field in and near the pore, benefiting the generation of microdischarge in a pore.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"135 ","pages":"Article 104061"},"PeriodicalIF":1.9,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687001","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}

{"title":"A performance study on the drum-type energy harvesting device based on triboelectric nanogenerator","authors":"Mingfan Li ,&nbsp;Sunyangyang Jin ,&nbsp;Aihua Meng ,&nbsp;Jun Song ,&nbsp;Zhenlong Xu ,&nbsp;Yu Chen ,&nbsp;Yang Zeng","doi":"10.1016/j.elstat.2025.104066","DOIUrl":"10.1016/j.elstat.2025.104066","url":null,"abstract":"<div><div>A drum-type energy harvesting system utilizing a triboelectric nanogenerator (TENG) has been developed to provide power for wireless health monitoring devices. The electrical performance and structural reliability are assessed through simulation. Experiments examine the effect of contact area and vibration acceleration on the electrical output of the electrode pair. Experimental results suggest that the peak-to-peak value of the conversion circuit voltage could reach 39.9 V, and the output power of a single electrode pair for one cycle can reach 17.74 μW. The total output power of the drum-type TENG device, which consists of eight electrode pairs, is 141.92 μW. This paper elucidates a method for powering low-power sensors or arrays of LEDs.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"135 ","pages":"Article 104066"},"PeriodicalIF":1.9,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687555","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}

{"title":"Modeling of the electric field in buccal epithelial cells to determine the electric field strength at the cytoplasm–Nucleus interface","authors":"Anastasiya Rumyantseva ,&nbsp;Anna Borde ,&nbsp;Mikhail Ordzhonikidze ,&nbsp;Artem Izmaylov ,&nbsp;Ludmila Pokidysheva ,&nbsp;Andrey Samorodov ,&nbsp;Sergey Shchukin ,&nbsp;Alexander Volkov","doi":"10.1016/j.elstat.2025.104063","DOIUrl":"10.1016/j.elstat.2025.104063","url":null,"abstract":"<div><div>Buccal epithelial cells are an informative material for assessing the functional state of the human body. The electrokinetic properties of these cells reflect the initial level of inflammation and stress in the body. The article presents a simulation of constant, sinusoidal and bipolar electric field signals.</div><div>As a result, a relationship was obtained between the voltage of the external electric field and the voltage acting on the nucleus of the buccal epithelium cell. The shape of the bipolar signal meets the requirements for conducting a study, since such a signal allows you to fully study the electrokinetic properties.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"135 ","pages":"Article 104063"},"PeriodicalIF":1.9,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687554","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}

{"title":"Optimization design of electrostatic adhesion films: Based on theoretical modeling and experimental verification","authors":"Biao Xu ,&nbsp;Xuanqingjiang Wang","doi":"10.1016/j.elstat.2025.104067","DOIUrl":"10.1016/j.elstat.2025.104067","url":null,"abstract":"<div><div>Electrostatic adhesion technology, with its adaptability and low power consumption, shows great potential in spacecraft repair and wall-climbing robots. This study develops a theoretical model of electrostatic adhesion force based on Laplace's equation, analyzing the effects of key parameters such as electrode voltage, insulation layer thickness, electrode width, and spacing. Using LINGO software for optimization design, optimal configurations are determined. An experimental platform was set up to test adhesion force under various parameter configurations. Theoretical and experimental results are highly consistent, verifying the model's accuracy and providing valuable insights for the design and optimization of electrostatic adhesion films.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"135 ","pages":"Article 104067"},"PeriodicalIF":1.9,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687553","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}

{"title":"A Faraday cup for charge measurements in biophysical and environmental fieldwork","authors":"R. Giles Harrison ,&nbsp;Daniel Robert","doi":"10.1016/j.elstat.2025.104062","DOIUrl":"10.1016/j.elstat.2025.104062","url":null,"abstract":"<div><div>A novel miniature (28 mm × 38 mm) shielded Faraday cup is described for quantifying picocoulomb charges on millimetre environmental objects, such as small insects or plants, droplets, dust particles or powders. The electrometer electronics is contained within the device, avoiding any transfer of low level signals to an external electrometer. It is calibrated using a voltage ramp – capacitor method, generating defined charge pulses without a reference electrometer. The device can fit within an acoustic levitator to provide non-contact, zero leakage suspension of small objects, measuring charge on their release. Convenience and simplicity of use open new environmental charge measurement opportunities.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"135 ","pages":"Article 104062"},"PeriodicalIF":1.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the electric field distribution of an excimer laser chamber via three-dimensional simulations","authors":"Zhen Wang ,&nbsp;Jiayi Chen ,&nbsp;Jinbao Liu ,&nbsp;Zhihang Zhao ,&nbsp;Wenjin Zhang ,&nbsp;Yangyang Fu","doi":"10.1016/j.elstat.2025.104058","DOIUrl":"10.1016/j.elstat.2025.104058","url":null,"abstract":"<div><div>The generation of a high-pressure, large-volume, uniform and stable glow discharge is the key technology of the excimer laser, which could be largely affected by the electric field distribution between the electrodes in the discharge chamber. In this work, the spatial distributions of the electric field in an excimer laser discharge chamber with preionization pins (PIPs) are numerically evaluated via a three-dimensional (3D) simulation model. The effects of the number (<span><math><mi>N</mi></math></span>) of pairs of PIPs and their arrangements (symmetrical or staggered) on the inhomogeneity of electric field strength are determined. The results indicate that the presence of PIPs can cause electric field distortion between electrodes, resulting in a wavy distribution. As the number (<span><math><mi>N</mi></math></span>) of pairs of PIPs increases, the electric field strength homogeneity between electrodes can be improved considerably. When the number (<span><math><mi>N</mi></math></span>) of pairs of PIPs is 2 (i.e., <span><math><mrow><mi>N</mi><mo>=</mo><mn>2</mn></mrow></math></span>), the inhomogeneity of the electric field strength (<span><math><mrow><msub><mrow><mi>δ</mi></mrow><mrow><mi>N</mi><mo>=</mo><mn>2</mn><mo>,</mo><mtext>stag</mtext></mrow></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>183</mn><mtext>%</mtext></mrow></math></span>) with a staggered arrangement is obviously better than that (<span><math><mrow><msub><mrow><mi>δ</mi></mrow><mrow><mi>N</mi><mo>=</mo><mn>2</mn><mo>,</mo><mtext>symm</mtext></mrow></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>514</mn><mtext>%</mtext></mrow></math></span>) with a symmetrical arrangement. With the PIPs arranged symmetrically, the inhomogeneity of the electric field strength <span><math><mi>δ</mi></math></span> remains below 0.2% when <span><math><mi>N</mi></math></span> <span><math><mo>≥</mo></math></span> 8. These results indicate that the characteristics of the electric field distributions can be influenced by the PIPs in the discharge chamber, which may provide potential insights for the design and optimization of excimer laser devices.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"135 ","pages":"Article 104058"},"PeriodicalIF":1.9,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579719","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}

{"title":"Review of the enhanced effect of external electric field on condensation heat transfer","authors":"Dian Li,&nbsp;Yuhang Zhang,&nbsp;Zirui Xu,&nbsp;Jian Wu","doi":"10.1016/j.elstat.2025.104050","DOIUrl":"10.1016/j.elstat.2025.104050","url":null,"abstract":"<div><div>This study provides a comprehensive review of the unique advantages of electric fields in the domain of condensation heat transfer. It analyzes the force dynamics and heat transfer mechanisms of fluids under the influence of electric fields. The review highlights previous work concerning the impact of electric fields on steam condensation on both flat and tubular surfaces. Furthermore, it elaborates on recent advancements in electrowetting technology, which enhances condensation by manipulating droplet dynamics. Key findings are systematically presented in tabular form to clearly illustrate the contributions in this area.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"135 ","pages":"Article 104050"},"PeriodicalIF":1.9,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551930","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}

{"title":"Cascade properties of EHD wall jets generated by an actuator with distributed surface-embedded electrode pairs","authors":"Zelu Yan ,&nbsp;Christophe Louste ,&nbsp;Jian Wu ,&nbsp;Jian'an Fang","doi":"10.1016/j.elstat.2025.104044","DOIUrl":"10.1016/j.elstat.2025.104044","url":null,"abstract":"<div><div>Electrohydrodynamic (EHD) conduction pumps have become a high-quality solution for cooling high-power-density electronic devices in space domains due to their low voltage requirement and simple electrode distribution. Recently, driving environmentally friendly dielectric liquids, such as hydrofluoroethers (HFEs), using a cascaded actuator with distributed surface-embedded electrode pairs has gained attention as an innovative EHD cooling strategy. Previous studies have visualized the acceleration of the jet when it passes through each electrode pair by the PIV technique, and have experimentally verified the effectiveness of cascaded conduction pumps. However, the large time scale of these experimental studies makes it challenging to accurately capture the formation stage of the cascaded jet and thus explore its evolutionary properties. In this paper, a nine-surface embedded electrode pair actuator is modeled based on multiphysics field finite element method simulation. The results show that the four initial vortices above each electrode pair induced by charge migration undergo outer vortex expansion and inner vortex suppression within a short period, accompanied by merging, deflecting, and cascading processes of the localized jets. The vortices above each electrode pair show a consistent distribution pattern with the charge density extremes. The current density increases quasi-linearly over the voltage range of 0.5 kV–5 kV. With the operational number <span><math><mrow><mi>β</mi></mrow></math></span> = 2.56 for the conduction pump in this study, the system consistently operates in the ohmic regime.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"135 ","pages":"Article 104044"},"PeriodicalIF":1.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551929","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}

{"title":"Operando space charge distribution measurements coupled with cyclic voltammetry","authors":"Mathilde Arnaud ,&nbsp;Yann Walter ,&nbsp;Amina Cheutin ,&nbsp;Zehui Zhou ,&nbsp;Rémi Federicci ,&nbsp;Stéphane Holé ,&nbsp;Brigitte Leridon","doi":"10.1016/j.elstat.2025.104049","DOIUrl":"10.1016/j.elstat.2025.104049","url":null,"abstract":"<div><div>Understanding the electrode–electrolyte interface in energy storage devices remains an important challenge for the improvement of these systems. This paper introduces an operando technique that couples cyclic voltammetry with a system implementing the Pressure-Wave-Propagation method. This technique has been applied to RbOH ceramics containing either silver or gold electrodes, revealing different space charge distributions during their oxidation processes. In addition, this experimental method was employed to monitor aluminum corrosion in the presence of a NaCl solution. This method provides insights on the dynamics of electrostatic charges during charging–discharging cycles and enables to gather critical information from solid–liquid and solid–solid interfaces.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"135 ","pages":"Article 104049"},"PeriodicalIF":1.9,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526604","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}