Journal of Electrostatics最新文献_第2页

Trap energy distribution in aircraft dielectric materials through surface potential decay method 利用表面电位衰减法捕获飞机介质材料中的能量分布

IF 2.1 4区工程技术

Journal of Electrostatics Pub Date : 2025-09-30 DOI: 10.1016/j.elstat.2025.104181

Dong Chen, XiaoFeng Hu, Lei Wang, Ming Wei, JianPing Zhang, Shuai Zhou

{"title":"Trap energy distribution in aircraft dielectric materials through surface potential decay method","authors":"Dong Chen, XiaoFeng Hu, Lei Wang, Ming Wei, JianPing Zhang, Shuai Zhou","doi":"10.1016/j.elstat.2025.104181","DOIUrl":"10.1016/j.elstat.2025.104181","url":null,"abstract":"<div><div>Charge deposition on aircraft insulation material surfaces is challenging to discharge via electrostatic discharger, potentially leading to streamer discharge and interference with avionic systems. To mitigate this risk and enhance flight safety, a quantitative understanding of charge trap distributions in these materials is essential. Three common aircraft dielectric materials—fiberglass epoxy, silicon carbide, and epoxy resin—were selected to conduct surface potential decay experiments. By systematically analyzing the potential decay characteristics of these materials under two corona charging polarities, their electron and hole trap distribution parameters were accurately determined. The results demonstrate that fiberglass epoxy exhibits predominant deep traps (1.025 eV) for both electrons and holes with high density (>7 × 10<sup>19</sup> m<sup>−3</sup>), leading to significantly slower potential decay (τ<sub>10 %</sub> > 7000 s) and stronger charge binding capacity. Silicon carbide possesses dominant shallow electron traps (0.95 eV, 1.8 × 10<sup>20</sup> m<sup>−3</sup>) resulting in faster decay (τ<sub>10 %</sub> < 2000 s). Epoxy resin also features primarily shallow traps for both carriers (0.93–0.96 eV), with decay times exceeding 3200 s. These distinct trap distribution characteristics (energy, density, and dominance of shallow/deep levels) arise from inherent material microstructural differences (e.g., polar groups, crystalline defects, interfacial structures) and directly govern their charge accumulation and dissipation dynamics in specific aircraft applications (radomes, engine components, structural parts). The findings provide quantitative data for optimizing aircraft dielectric material selection and electrostatic protection design.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"138 ","pages":"Article 104181"},"PeriodicalIF":2.1,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226880","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

Advanced oxidation of airborne m-xylene in combination of pulsed corona discharge and post-plasma photocatalysis 脉冲电晕放电与等离子体后光催化联合深度氧化空气中间二甲苯

IF 2.1 4区工程技术

Journal of Electrostatics Pub Date : 2025-09-29 DOI: 10.1016/j.elstat.2025.104184

Kristen Altof, Marina Krichevskaya, Sergei Preis, Juri Bolobajev

{"title":"Advanced oxidation of airborne m-xylene in combination of pulsed corona discharge and post-plasma photocatalysis","authors":"Kristen Altof, Marina Krichevskaya, Sergei Preis, Juri Bolobajev","doi":"10.1016/j.elstat.2025.104184","DOIUrl":"10.1016/j.elstat.2025.104184","url":null,"abstract":"<div><div>This study investigates the efficiency of a plug flow post-plasma catalysis air purification system for the removal of <em>m</em>-xylene (40 ± 5 ppm) from air. The treatment system consists of a pulsed corona discharge (PCD) reactor followed by a photocatalytic oxidation (PCO) reactor, arranged in series to enhance pollutant degradation. Experiments were conducted under varying conditions, including air flow rates from 2 to 10 m<sup>3</sup> h<sup>−1</sup>, and relative humidity levels of 2.5 % (dry air), 35 % (humid air), and 65 % (sprinkler-assisted humidification within the PCD reactor). In addition, the pulse frequency of the PCD reactor varied between 100 and 800 pulses per second, allowing evaluation of its influence on treatment performance. The study provides insight into how operational parameters affect the degradation efficiency of <em>m</em>-xylene in a continuous-flow system. The results highlight the synergistic potential of post-plasma photocatalysis for air purification and potential shortcomings like ozone, nitrogen oxides and by-product formation.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"138 ","pages":"Article 104184"},"PeriodicalIF":2.1,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226881","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

Experimental and numerical investigations of DC corona discharge in the triode system 三极管系统直流电晕放电的实验与数值研究

IF 2.1 4区工程技术

Journal of Electrostatics Pub Date : 2025-09-26 DOI: 10.1016/j.elstat.2025.104186

Sabrina Chouali , Ahmed Kasdi , Lucian Dascalescu , Zehira Ziari , Thami Zeghloul

{"title":"Experimental and numerical investigations of DC corona discharge in the triode system","authors":"Sabrina Chouali , Ahmed Kasdi , Lucian Dascalescu , Zehira Ziari , Thami Zeghloul","doi":"10.1016/j.elstat.2025.104186","DOIUrl":"10.1016/j.elstat.2025.104186","url":null,"abstract":"<div><div>One practical application of corona discharge is the electrostatic charging of insulating materials to confer specific electrical properties. The “triode” electrode system is then frequently used to direct and control the charge level. The aim of this article is to characterize numerically and experimentally this electrode arrangement in order to optimize the charging process. In the present work, an innovative grid consisting of a set of parallel wires was utilized. The geometry of this new grid facilitated a numerical investigation of corona discharge in the triode configuration by employing a 2D simulation performed in COMSOL Multiphysics software. The study explores the effect of variation of different parameters such as wire-to-plane distance, grid-to-plane spacing, inter-wire gap of the grid, applied voltage polarity and grid potential. It was found that the introduction of the grid into the inter-electrode space, as well as the variation of its various parameters, has a considerable impact on the discharge characteristics, modifying both the amplitude and the shape of the electric field and space charge on the ground plane. The results also show a satisfactory correlation between experimental and simulation values, confirming the validity of the numerical model with the new grid.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"138 ","pages":"Article 104186"},"PeriodicalIF":2.1,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157557","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

Rapid degradation of methylene blue using a dielectric barrier discharge plasma reactor with a water circulation system 水循环介质阻挡放电等离子体反应器快速降解亚甲基蓝

IF 2.1 4区工程技术

Journal of Electrostatics Pub Date : 2025-09-25 DOI: 10.1016/j.elstat.2025.104185

Hee Jae Lee , Hae Kwang Kim , Min Woo Kim , Sun Kyung Jung , Kang Il Kim , Ki Bum Kim , Yong Cheol Hong

{"title":"Rapid degradation of methylene blue using a dielectric barrier discharge plasma reactor with a water circulation system","authors":"Hee Jae Lee , Hae Kwang Kim , Min Woo Kim , Sun Kyung Jung , Kang Il Kim , Ki Bum Kim , Yong Cheol Hong","doi":"10.1016/j.elstat.2025.104185","DOIUrl":"10.1016/j.elstat.2025.104185","url":null,"abstract":"<div><div>Methylene blue (MB, C<sub>16</sub>H<sub>18</sub>ClN<sub>3</sub>S) in water was efficiently degraded using a dielectric barrier discharge (DBD) plasma reactor. The air plasma generated by the flat-DBD system was introduced into the MB solution through a micro-bubbler. Despite the short lifetimes of the active species formed in plasma, they effectively decomposed contaminants upon contact with water. This study investigated the influence of various factors, including air flow rate, initial solution concentration, ozone production, and energy yield, on MB degradation. The results showed that the proposed plasma reactor could efficiently degrade MB. Furthermore, a mechanism to enhance the reaction rate was optimized using the flat-DBD plasma module and a 300-L circulating treatment system. With an initial MB concentration of 5 mg/L, one cycle from the 1000-L tank to the 300-L reactor took 50 min, achieving a 97.5 % degradation rate after 60 min. The energy yield for MB degradation was 22.5 g/kWh, and ozone production reached 3.9 g/h. A potential rapid degradation pathway for the MB solution is proposed in this study. This reactor design shows promising potential for applications related to the degradation of MB in dyeing wastewater and industrial processes.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"138 ","pages":"Article 104185"},"PeriodicalIF":2.1,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157558","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

Sustainable micro energy harvesting using cryogenically processed bio-waste natural human hair as a triboelectric material 利用低温处理过的生物废弃物——天然人类头发——作为摩擦电材料的可持续微能量收集

IF 2.1 4区工程技术

Journal of Electrostatics Pub Date : 2025-09-25 DOI: 10.1016/j.elstat.2025.104183

Yuvanraj Selvaraj, Lakmini Jayasingha, Gihan Amarasinghe, Sumedha Jayanetti

引用次数: 0

Subcritical crack monitoring in rocks using combined electromagnetic and acoustic emission analysis 岩石亚临界裂纹的电磁声发射联合监测

IF 2.1 4区工程技术

Journal of Electrostatics Pub Date : 2025-09-22 DOI: 10.1016/j.elstat.2025.104180

Maciej A. Noras , Hunter Mathis , Jagat Joshi , Alex Rinehart , Marissa Fichera , Martha-Cary Eppes

引用次数: 0

The scaling of triboelectric charging powder drops for industrial applications 用于工业应用的摩擦充电粉末滴的结垢

IF 2.1 4区工程技术

Journal of Electrostatics Pub Date : 2025-09-19 DOI: 10.1016/j.elstat.2025.104166

Tom F. O’Hara , Ellen Player , Graham Ackroyd , Peter J. Caine , Karen L. Aplin

{"title":"The scaling of triboelectric charging powder drops for industrial applications","authors":"Tom F. O’Hara , Ellen Player , Graham Ackroyd , Peter J. Caine , Karen L. Aplin","doi":"10.1016/j.elstat.2025.104166","DOIUrl":"10.1016/j.elstat.2025.104166","url":null,"abstract":"<div><div>Triboelectrification of granular materials is a poorly understood phenomenon that alters particle behaviour, impacting industrial processes such as bulk powder handling and conveying. At small scales (<span><math><mo><</mo></math></span>2 g) net charging of powders has been shown to vary linearly with the total particle surface area and hence mass for a given size distribution. This work investigates the scaling relation of granular triboelectric charging, with small, medium (2–200 g), and large-scale (<span><math><mo>∼</mo></math></span>400 kg) laboratory testing of industrially relevant materials using a custom powder dropping apparatus and Faraday cup measurements. Our results demonstrate that this scaling is broken before industrially relevant scales are reached. Charge (Q) scaling with mass (m) was fitted with a function of the form <span><math><mrow><mi>Q</mi><mo>∝</mo><msup><mrow><mi>m</mi></mrow><mrow><mi>b</mi></mrow></msup></mrow></math></span> and <span><math><mi>b</mi></math></span> exponents ranging from <span><math><mrow><mn>0</mn><mo>.</mo><mn>68</mn><mspace></mspace><mo>±</mo><mspace></mspace><mn>0</mn><mo>.</mo><mn>01</mn></mrow></math></span> to <span><math><mrow><mn>0</mn><mo>.</mo><mn>86</mn><mspace></mspace><mo>±</mo><mspace></mspace><mn>0</mn><mo>.</mo><mn>02</mn></mrow></math></span> were determined. These exponents lie between those that would be expected from the surface area of the bulk powder (<span><math><mrow><mi>b</mi><mo>=</mo><mn>2</mn><mo>/</mo><mn>3</mn></mrow></math></span>) and the total particle surface area (<span><math><mrow><mi>b</mi><mo>=</mo><mn>1</mn></mrow></math></span>). This scaling relation is found to hold across the powders tested and remains robust under varying humidity, despite changes in the absolute charge magnitude.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"138 ","pages":"Article 104166"},"PeriodicalIF":2.1,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104429","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

Comparative analysis of two plate-to-plate electrode configurations for dust resistivity measurement 灰尘电阻率测量两种板对板电极结构的比较分析

IF 2.1 4区工程技术

Journal of Electrostatics Pub Date : 2025-09-18 DOI: 10.1016/j.elstat.2025.104163

László Székely, István Kiss

{"title":"Comparative analysis of two plate-to-plate electrode configurations for dust resistivity measurement","authors":"László Székely, István Kiss","doi":"10.1016/j.elstat.2025.104163","DOIUrl":"10.1016/j.elstat.2025.104163","url":null,"abstract":"<div><div>Dust resistivity is a key parameter in the efficiency of electrostatic precipitators, yet its measurement is influenced by numerous environmental and methodological factors. In this study, the specific resistivity of coal, biomass, and mixed-fuel-derived dust samples was investigated using two plate-to-plate electrode arrangements under controlled temperature and humidity conditions. Arrangement #1 used square electrodes and vibratory compaction, while Arrangement #2 used cylindrical electrodes with weight-based compaction and a guarding ring to reduce edge effects. Measurements were performed across six temperature levels (30–180 °C) in both heating and cooling cycles, revealing temperature- and humidity-dependent shifts from surface to bulk conduction mechanisms. Time-dependent resistivity profiles were recorded at fixed intervals to capture polarization effects. Results indicated that Arrangement #2 generally produced lower resistivity values, likely due to enhanced compaction and increased surface contact. The experiments also highlighted discrepancies in repeatability and compaction sensitivity between arrangements. These findings contribute to a deeper understanding of dust conduction mechanisms and inform the design of future measurement protocols.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"138 ","pages":"Article 104163"},"PeriodicalIF":2.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104428","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

Triboelectric properties on treated human hair: a mesoscale method to measure the surface potential 处理过的人类头发的摩擦电特性：测量表面电位的中尺度方法

IF 2.1 4区工程技术

Journal of Electrostatics Pub Date : 2025-09-16 DOI: 10.1016/j.elstat.2025.104162

Md Arifur Rahman , Rudolf Kiefer , Indrek Must , Tarmo Tamm

{"title":"Triboelectric properties on treated human hair: a mesoscale method to measure the surface potential","authors":"Md Arifur Rahman , Rudolf Kiefer , Indrek Must , Tarmo Tamm","doi":"10.1016/j.elstat.2025.104162","DOIUrl":"10.1016/j.elstat.2025.104162","url":null,"abstract":"<div><div>The anti-static effect is an increasingly valuable asset for hair treatment products, holding an increasing economic share. Hair care industries are increasingly looking for quantitative methods for hair treatment assessment, yet the multiscale nature of hair challenges the comparative assessment of its triboelectric properties. This study presents a straightforward methodology for measuring the surface potential of human hair at the mesoscale. Instead of studying microscale local charges highly accurately or bundling large bunches of hair for averaging, an intermediate approach was designed. The method was validated by varying both the hair count and the sample distance from the sensor. The results showed that the method can distinguish the surface charge of bleached hair from those of chemically untreated or mildly peptide treated. The variations in static charge were linked to the hair properties after the treatments, as assessed by Fourier transform infrared spectroscopy and scanning electron microscopy. The availability of a relatively simple technique to obtain quantified measurements of hair condition after treatment will enable hair care product manufacturers to identify potential defects, ensuring their products treat damaged hair to the required specifications and quality standards.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"138 ","pages":"Article 104162"},"PeriodicalIF":2.1,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104424","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

Design of electrostatic 6D phase space detector for keV ions 静电6D离子相空间检测器的设计

IF 2.1 4区工程技术

Journal of Electrostatics Pub Date : 2025-09-16 DOI: 10.1016/j.elstat.2025.104165

Žiga Brenčič , Mitja Kelemen , Matevž Skobe , Simon Širca

引用次数: 0