Journal of Electrostatics最新文献

英文中文

A review on advancements in atmospheric plasma-based decontamination and drug delivery (invited paper) 大气等离子体净化与给药技术进展（特邀论文）

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics

Pub Date : 2025-09-01 DOI: 10.1016/j.elstat.2025.104083

Jaroslav Kristof , Marius Gabriel Blajan , Kazuo Shimizu

Over the past two decades, nonthermal plasma has emerged as a promising tool for various medical applications, including wound healing, blood coagulation, decontamination, and cancer therapy. This review provides a comprehensive analysis of advancements in the field, detailing both fundamental mechanisms and recent technological developments. The medical efficacy of nonthermal plasma is primarily attributed to its physical effects, such as electric fields and ultraviolet radiation, as well as its chemical effects, driven by the production of reactive oxygen and nitrogen species (RONS). These reactive species play a critical role in inducing apoptosis and oxidative stress, thereby affecting cellular viability. Additionally, nonthermal plasma is gaining attention as a novel drug delivery system, offering targeted therapeutic potential for various diseases. However, while RONS are effective in removing harmful cells, their broader applicability to neurological and other non-cancerous diseases remains uncertain. This review explores the feasibility of plasma-based drug delivery as a controlled mechanism for therapeutic applications beyond oncology. By examining the latest innovations and challenges in plasma medicine, we aim to highlight its potential for expanding treatment modalities and addressing unmet clinical needs.

在过去的二十年里，非热等离子体已经成为各种医学应用的有前途的工具，包括伤口愈合、血液凝固、净化和癌症治疗。本综述全面分析了该领域的进展，详细介绍了基本机制和最近的技术发展。非热等离子体的医疗功效主要归因于其物理效应，如电场和紫外线辐射，以及由活性氧和氮种（RONS）的产生驱动的化学效应。这些活性物质在诱导细胞凋亡和氧化应激中起关键作用，从而影响细胞活力。此外，非热等离子体作为一种新型的药物输送系统，为各种疾病提供了靶向治疗的潜力，正受到人们的关注。然而，尽管ron在清除有害细胞方面是有效的，但其在神经和其他非癌性疾病方面的广泛适用性仍不确定。这篇综述探讨了血浆给药作为一种控制机制在肿瘤以外的治疗应用的可行性。通过研究血浆医学的最新创新和挑战，我们旨在强调其在扩大治疗方式和解决未满足的临床需求方面的潜力。

{"title":"A review on advancements in atmospheric plasma-based decontamination and drug delivery (invited paper)","authors":"Jaroslav Kristof , Marius Gabriel Blajan , Kazuo Shimizu","doi":"10.1016/j.elstat.2025.104083","DOIUrl":"10.1016/j.elstat.2025.104083","url":null,"abstract":"<div><div>Over the past two decades, nonthermal plasma has emerged as a promising tool for various medical applications, including wound healing, blood coagulation, decontamination, and cancer therapy. This review provides a comprehensive analysis of advancements in the field, detailing both fundamental mechanisms and recent technological developments. The medical efficacy of nonthermal plasma is primarily attributed to its physical effects, such as electric fields and ultraviolet radiation, as well as its chemical effects, driven by the production of reactive oxygen and nitrogen species (RONS). These reactive species play a critical role in inducing apoptosis and oxidative stress, thereby affecting cellular viability. Additionally, nonthermal plasma is gaining attention as a novel drug delivery system, offering targeted therapeutic potential for various diseases. However, while RONS are effective in removing harmful cells, their broader applicability to neurological and other non-cancerous diseases remains uncertain. This review explores the feasibility of plasma-based drug delivery as a controlled mechanism for therapeutic applications beyond oncology. By examining the latest innovations and challenges in plasma medicine, we aim to highlight its potential for expanding treatment modalities and addressing unmet clinical needs.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"137 ","pages":"Article 104083"},"PeriodicalIF":2.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027719","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

Materials for high voltage insulation: Open challenges for electrostatics experts 高压绝缘材料：对静电专家的公开挑战

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics

Pub Date : 2025-09-01 DOI: 10.1016/j.elstat.2025.104118

Pedro Llovera-Segovia

The field of high-voltage insulation materials is vast, encompassing a diverse range of materials and applications across multiple domains, from electrical engineering to spacecraft and satellites, among others. This review focuses on high-voltage insulation materials, narrowing its scope, an inherently arbitrary decision, to their role in high-voltage engineering within power networks. This focus is justified not only by the sector's societal significance, particularly in the context of renewable energy and the transition to a more electrified energy system, but also by the remarkable variety of insulating materials involved. These materials include solids, liquids, and gases, as well as complex composite systems exposed to diverse environments, whether outdoor, indoor, or in confined spaces subject to radiation or vacuum conditions. The review is designed as an introductory journey into the vast landscape of materials for high-voltage insulation. Key challenges for electrostatics experts are highlighted, serving as an open invitation to contribute to the advancement of the field.

高压绝缘材料的领域是广阔的，涵盖了从电气工程到航天器和卫星等多个领域的各种材料和应用。这篇综述的重点是高压绝缘材料，缩小其范围，固有的武断决定，在高压工程中的作用，在电网。这种关注不仅是因为该行业的社会意义，特别是在可再生能源和向更电气化的能源系统过渡的背景下，而且还因为所涉及的绝缘材料种类繁多。这些材料包括固体、液体和气体，以及暴露在不同环境下的复杂复合系统，无论是室外、室内还是受辐射或真空条件影响的密闭空间。该评论被设计为进入高压绝缘材料广阔景观的入门之旅。强调了静电专家面临的主要挑战，并公开邀请他们为该领域的发展做出贡献。

引用次数: 0

EHD-induced mass transfer from wet materials ehd诱导的湿材料传质

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics

Pub Date : 2025-09-01 DOI: 10.1016/j.elstat.2025.104075

Alex Martynenko

Electrohydrodynamics (EHD) is an interdisciplinary field that combines electrodynamics and fluid dynamics, primarily studying fluid motion driven by electric fields. The mechanisms of EHD arise from the interaction between the electric fields, charged particles and polarization effects within the fluid. This review extends the boundaries of our knowledge about mechanisms of EHD-induced mass transfer. The impact of EHD flow on convective and diffusive mass transfer in gaseous and liquid phases of capillary-porous materials is thoroughly discussed. The review covers the gap between electrohydrodynamics and thermodynamics, serving as a reference for future EHD applications in mass transfer processes.

电流体动力学（EHD）是电动力学和流体动力学相结合的跨学科领域，主要研究由电场驱动的流体运动。EHD的机理是电场、带电粒子和流体内部极化效应之间的相互作用。这篇综述扩展了我们对ehd诱导传质机制的认识。深入讨论了EHD流动对毛细管多孔材料气、液相对流传质和扩散传质的影响。综述了电流体动力学和热力学之间的差距，为今后电流体动力学在传质过程中的应用提供了参考。

引用次数: 0

Review on electro-convection and electro–thermo-convection in dielectric liquids within different geometrical models 不同几何模型下介电液体的电对流和电热对流研究进展

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics

Pub Date : 2025-09-01 DOI: 10.1016/j.elstat.2025.104089

Guangze Liu, Yu Zhang, Dian Li, Yuxing Peng, Jian Wu

Electrohydrodynamics (EHD) explores the interactions between electric fields and various fluid media. The core principle of electrically driven fluid motion lies in the direct conversion of electrical energy into fluid kinetic energy, forming the basis for efficient and intelligent energy utilization. Among the fundamental topics in EHD, Coulomb-force-driven electro-convection (EC) plays a crucial role in understanding the interaction mechanisms between flow fields and electric fields, as well as charge transport processes. Building upon EC, electro–thermo-convection (ETC) introduces additional complexity by incorporating nonlinear interactions among the temperature field, electric field, flow field, and charge density field. This leads to rich nonlinear bifurcation phenomena and provides new theoretical insights for applications such as heat transfer enhancement and intelligent thermal management. This study systematically examines the behavior and underlying mechanisms of EC and ETC in square cavities, parallel plates, and annular geometries. It focuses on charge generation mechanisms, the dimensionless formulation of governing equations, and key control parameters, while also analyzing the nonlinear interactions in EC and ETC and their impact on flow stability and heat transfer efficiency.

电流体力学（EHD）研究电场与各种流体介质之间的相互作用。电驱动流体运动的核心原理在于将电能直接转化为流体动能，形成高效、智能利用能量的基础。在EHD的基础课题中，库仑力驱动的电对流（EC）对于理解流场与电场之间的相互作用机制以及电荷输运过程起着至关重要的作用。在EC的基础上，电热对流（ETC）通过结合温度场、电场、流场和电荷密度场之间的非线性相互作用，引入了额外的复杂性。这导致了丰富的非线性分岔现象，并为传热增强和智能热管理等应用提供了新的理论见解。本研究系统地检查了EC和ETC在方腔、平行板和环形几何中的行为和潜在机制。重点研究了电荷产生机理、控制方程的无因次化和关键控制参数，同时分析了EC和ETC中的非线性相互作用及其对流动稳定性和传热效率的影响。

{"title":"Review on electro-convection and electro–thermo-convection in dielectric liquids within different geometrical models","authors":"Guangze Liu, Yu Zhang, Dian Li, Yuxing Peng, Jian Wu","doi":"10.1016/j.elstat.2025.104089","DOIUrl":"10.1016/j.elstat.2025.104089","url":null,"abstract":"<div><div>Electrohydrodynamics (EHD) explores the interactions between electric fields and various fluid media. The core principle of electrically driven fluid motion lies in the direct conversion of electrical energy into fluid kinetic energy, forming the basis for efficient and intelligent energy utilization. Among the fundamental topics in EHD, Coulomb-force-driven electro-convection (EC) plays a crucial role in understanding the interaction mechanisms between flow fields and electric fields, as well as charge transport processes. Building upon EC, electro–thermo-convection (ETC) introduces additional complexity by incorporating nonlinear interactions among the temperature field, electric field, flow field, and charge density field. This leads to rich nonlinear bifurcation phenomena and provides new theoretical insights for applications such as heat transfer enhancement and intelligent thermal management. This study systematically examines the behavior and underlying mechanisms of EC and ETC in square cavities, parallel plates, and annular geometries. It focuses on charge generation mechanisms, the dimensionless formulation of governing equations, and key control parameters, while also analyzing the nonlinear interactions in EC and ETC and their impact on flow stability and heat transfer efficiency.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"137 ","pages":"Article 104089"},"PeriodicalIF":2.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027641","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

A review of recent advancements in electrohydrodynamic heat transfer enhancement 电流体动力强化传热研究进展综述

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics

Pub Date : 2025-09-01 DOI: 10.1016/j.elstat.2025.104151

Nima Amanifard , Hesam Moayedi , Farid Dolati , Hamed Mohaddes Deylami

Electrohydrodynamic flow, recognized as a promising active method with a wide range of applications, has been identified as a potential candidate for thermal management and the heat transfer enhancement. This review provides a comprehensive analysis of recent advancements in the EHD technique and its efficacy in enhancing convective heat transfer. Related literature published that examines the interaction between EHD flow and the convection heat transfer has been systematically classified and discussed. The conclusions of the studies indicate that EHD technology has the potential to serve as an effective approach to thermal management, particularly in terms of enhancing heat transfer efficiency and reducing power consumption. The impact of effective operational and geometric parameters on the EHD-enhancing heat transfer has been highlighted. In a word, this review aims to elucidate the opportunities arising from research on EHD heat transfer enhancement and to explore its future development trends.

电流体动力流动是一种具有广泛应用前景的主动方法，已被确定为热管理和强化传热的潜在候选方法。本文综述了近年来EHD技术的研究进展及其在增强对流换热方面的作用。本文对已发表的有关EHD流动与对流换热相互作用的文献进行了系统的分类和讨论。这些研究的结论表明，EHD技术有潜力成为一种有效的热管理方法，特别是在提高传热效率和降低功耗方面。强调了有效的操作参数和几何参数对ehd强化传热的影响。综上所述，本文旨在阐明EHD强化传热研究的机遇，并探讨其未来的发展趋势。

引用次数: 0

Review on scientific studies and commercial indoor air purification devices: Focus on plasma-catalytic technology 室内空气净化装置的科学研究与商用综述：以等离子体催化技术为重点

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics

Pub Date : 2025-09-01 DOI: 10.1016/j.elstat.2025.104153

Alex Destrieux, Ramavtar Jangra, Karol Hensel, Zdenko Machala

According to World Health Organization, urban populations spend 90 % of their time in indoor environments. Accentuated by the recent COVID-19 pandemic, this raises important concerns about the quality of the indoor air, which often contains various types of contaminants within three main categories: biological, volatile organic compounds, and particulate matter. Several technologies already exist for removing contaminants from indoor air, such as electrostatic based methods or filtration. Although these technologies are well established, they often target only one or two groups of contaminants. This review focuses on a promising technology: nonthermal plasma combined with catalysts. After an overview of indoor air contaminants, their sources, and the typical methods used for their removal, a highlight is put on the available commercial indoor air purification devices. The latter are rarely described in literature, and the comparison with lab-scale experiments are difficult due to the lack of information and available data from the manufacturers. The limitations of those systems are also discussed. As most of these commercial devices use combinations of various conventional technologies, the last part focuses on the ongoing research on plasma-catalytic systems. The main mechanisms are presented along with recent literature. Finally, some perspectives for its future development are proposed.

根据世界卫生组织的数据，城市人口90%的时间是在室内环境中度过的。最近的COVID-19大流行加剧了人们对室内空气质量的严重担忧，室内空气通常含有三大类不同类型的污染物：生物、挥发性有机化合物和颗粒物。已有几种技术可以去除室内空气中的污染物，如静电方法或过滤。虽然这些技术已经很成熟，但它们通常只针对一两类污染物。综述了一种很有前途的技术：非热等离子体与催化剂的结合。在概述了室内空气污染物、它们的来源以及用于去除它们的典型方法之后，重点介绍了可用的商用室内空气净化装置。后者很少在文献中描述，并且由于缺乏来自制造商的信息和可用数据，很难与实验室规模的实验进行比较。讨论了这些系统的局限性。由于这些商用设备大多使用各种传统技术的组合，最后一部分重点介绍了正在进行的等离子体催化系统的研究。主要机制与最近的文献一起提出。最后，对其未来的发展提出了展望。

{"title":"Review on scientific studies and commercial indoor air purification devices: Focus on plasma-catalytic technology","authors":"Alex Destrieux, Ramavtar Jangra, Karol Hensel, Zdenko Machala","doi":"10.1016/j.elstat.2025.104153","DOIUrl":"10.1016/j.elstat.2025.104153","url":null,"abstract":"<div><div>According to World Health Organization, urban populations spend 90 % of their time in indoor environments. Accentuated by the recent COVID-19 pandemic, this raises important concerns about the quality of the indoor air, which often contains various types of contaminants within three main categories: biological, volatile organic compounds, and particulate matter. Several technologies already exist for removing contaminants from indoor air, such as electrostatic based methods or filtration. Although these technologies are well established, they often target only one or two groups of contaminants. This review focuses on a promising technology: nonthermal plasma combined with catalysts. After an overview of indoor air contaminants, their sources, and the typical methods used for their removal, a highlight is put on the available commercial indoor air purification devices. The latter are rarely described in literature, and the comparison with lab-scale experiments are difficult due to the lack of information and available data from the manufacturers. The limitations of those systems are also discussed. As most of these commercial devices use combinations of various conventional technologies, the last part focuses on the ongoing research on plasma-catalytic systems. The main mechanisms are presented along with recent literature. Finally, some perspectives for its future development are proposed.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"137 ","pages":"Article 104153"},"PeriodicalIF":2.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027650","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

Effect of particle electrostatic charge level on collection efficiency of an electric metal mesh filter 颗粒静电电荷水平对金属网过滤器收集效率的影响

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics

Pub Date : 2025-08-28 DOI: 10.1016/j.elstat.2025.104159

M.A. Sayoud, N. Zouzou

The effectiveness of filter media technique for air purification is no longer a matter of debate. However, the challenge now is to determine ways of optimizing particle-fiber interactions in order to achieve the optimal balance between particles collection efficiency and pressure drop across the filter. In this paper, we are particularly interested in interactions of an electrical nature, governed essentially by Coulomb, dielectrophoretic (DEP) and image forces. At first, we developed a special experimental protocol that enabled us to focus mainly on these interactions. Then, by controlling particle charge levels, we were able to dissociate the contribution of each force on collection efficiency and to explore parameters influencing them, such as particle and wire diameters, mesh size, inter-grid distance and electric field intensity within an Electric Metal Mesh Filter (EMMF). The results revealed that the contribution of Coulomb force to collection efficiency is the most important, particularly in the case of strong field and high charge level. The efficiency by DEP force increases with field intensity, particle diameter and decreasing fiber diameter, whereas the effect of inter-grid distance and mesh size were limited. As for image force, its impact on collection efficiency increases with particle charge, although it remains marginal.

过滤介质技术对空气净化的有效性不再是一个有争议的问题。然而，现在的挑战是确定优化颗粒-纤维相互作用的方法，以实现颗粒收集效率和过滤器压降之间的最佳平衡。在本文中，我们对电学性质的相互作用特别感兴趣，这些相互作用主要由库仑、介电泳（DEP）和像力控制。首先，我们制定了一个特殊的实验方案，使我们能够主要关注这些相互作用。然后，通过控制粒子电荷水平，我们能够分离出每种力对收集效率的贡献，并探索影响它们的参数，如电子金属网过滤器（EMMF）中的粒子和电线直径、网格尺寸、网格间距离和电场强度。结果表明，库仑力对收集效率的贡献是最重要的，特别是在强电场和高电荷水平的情况下。电场强度、颗粒直径和纤维直径越小，DEP力效率越高，而网格间距和网格尺寸对DEP力效率的影响有限。像力对收集效率的影响随着粒子电荷的增加而增加，但影响不大。

{"title":"Effect of particle electrostatic charge level on collection efficiency of an electric metal mesh filter","authors":"M.A. Sayoud, N. Zouzou","doi":"10.1016/j.elstat.2025.104159","DOIUrl":"10.1016/j.elstat.2025.104159","url":null,"abstract":"<div><div>The effectiveness of filter media technique for air purification is no longer a matter of debate. However, the challenge now is to determine ways of optimizing particle-fiber interactions in order to achieve the optimal balance between particles collection efficiency and pressure drop across the filter. In this paper, we are particularly interested in interactions of an electrical nature, governed essentially by Coulomb, dielectrophoretic (DEP) and image forces. At first, we developed a special experimental protocol that enabled us to focus mainly on these interactions. Then, by controlling particle charge levels, we were able to dissociate the contribution of each force on collection efficiency and to explore parameters influencing them, such as particle and wire diameters, mesh size, inter-grid distance and electric field intensity within an Electric Metal Mesh Filter (EMMF). The results revealed that the contribution of Coulomb force to collection efficiency is the most important, particularly in the case of strong field and high charge level. The efficiency by DEP force increases with field intensity, particle diameter and decreasing fiber diameter, whereas the effect of inter-grid distance and mesh size were limited. As for image force, its impact on collection efficiency increases with particle charge, although it remains marginal.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"138 ","pages":"Article 104159"},"PeriodicalIF":2.1,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907501","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

Non-thermal plasma coupled with photocatalysis for indoor air treatment at high air flow rates: effects on VOCs and bio-aerosols 在高空气流速下，非热等离子体耦合光催化用于室内空气处理：对挥发性有机化合物和生物气溶胶的影响

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics

Pub Date : 2025-08-28 DOI: 10.1016/j.elstat.2025.104160

Thomas Vazquez , Aleksandra Lavrikova , Dalimír Wiedermann , Jan Babic , Miroslav Palko , Maroš Palko , Zdenko Machala

Advanced technology combining non-thermal plasma (NTP) with photocatalytic oxidation (PCO) for indoor air purification at high flow rates is tested on formaldehyde and bio-aerosol with E. coli bacteria. Two reactors were examined, both using TiO₂ photocatalyst: reactor 1 with dielectric barrier discharge (DBD) tubes and UV-C, and reactor 2 with a DBD module and UV-A LEDs. The NTP-PCO significantly reduced formaldehyde using a single pass method with high 250 L/min air flow rate. The bioaerosol decontamination achieved 3 log reduction up to total bacteria inactivation. This proof-of-concept demonstrates a promising approach of the combined NTP-PCO for scalable indoor air purification.

采用非热等离子体（NTP）与光催化氧化（PCO）相结合的先进技术，在高流速下净化室内空气，用大肠杆菌对甲醛和生物气溶胶进行了测试。两个反应器均采用TiO2光催化剂：反应器1采用介质阻挡放电（DBD）管和UV-C，反应器2采用DBD模块和UV-A led。NTP-PCO采用250 L/min高空气流量的单道法显著降低甲醛。生物气溶胶去污达到了3倍的减少，达到了细菌灭活总量。这一概念验证展示了一种有前途的联合NTP-PCO方法，用于可扩展的室内空气净化。

引用次数: 0

Preliminary analysis of the electrical charge distribution within liquids using PEA 用PEA初步分析液体中的电荷分布

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics

Pub Date : 2025-08-28 DOI: 10.1016/j.elstat.2025.104161

Matéo Dautremont , Paul Leblanc , Laurent Berquez , Thierry Paillat

Measuring the distribution of the electrical charges in various materials is of great importance for numerous industrial applications. The development of measurement method has been widely studied in the case of dielectric solids. However, for liquids, the development of measurement techniques is not as much established. Liquid materials, as for solid, are used in wide range of industrial applications, such as transformers or electrochemical energy storage. In order to determine the charge distribution within liquid materials, measurement technique used for solids have been adapt to be apply to liquids. The pulsed electro-acoustic (PEA) method has recently been adapted to liquids. It has been applied to various liquids under electrical constraints. Its application to liquids without electrical constraint, with the aim of measuring the natural distribution of electric charges (electrical double layer), is not widely done. This work proposes to apply the PEA method to various liquids without subjecting it to an electrical constraint, in order to assess its capability to measure the electrical double layer. The influence of different parameters on the response is presented and the trends obtained are compared with the trends expected from a theoretical model.

测量各种材料中电荷的分布对于许多工业应用是非常重要的。介电固体测量方法的发展已经得到了广泛的研究。然而，对于液体，测量技术的发展还没有建立起来。液体材料和固体材料一样，广泛应用于工业应用，如变压器或电化学储能。为了确定液体材料内部的电荷分布，用于固体的测量技术已经适应于用于液体的测量。脉冲电声（PEA）方法最近被应用于液体。它已被应用于在电约束下的各种液体。将其应用于无电约束的液体，以测量电荷的自然分布（双电层）为目的，还没有得到广泛的应用。这项工作建议将PEA方法应用于各种液体，而不受电约束，以评估其测量电双层的能力。给出了不同参数对响应的影响，并将得到的趋势与理论模型的预期趋势进行了比较。

{"title":"Preliminary analysis of the electrical charge distribution within liquids using PEA","authors":"Matéo Dautremont , Paul Leblanc , Laurent Berquez , Thierry Paillat","doi":"10.1016/j.elstat.2025.104161","DOIUrl":"10.1016/j.elstat.2025.104161","url":null,"abstract":"<div><div>Measuring the distribution of the electrical charges in various materials is of great importance for numerous industrial applications. The development of measurement method has been widely studied in the case of dielectric solids. However, for liquids, the development of measurement techniques is not as much established. Liquid materials, as for solid, are used in wide range of industrial applications, such as transformers or electrochemical energy storage. In order to determine the charge distribution within liquid materials, measurement technique used for solids have been adapt to be apply to liquids. The pulsed electro-acoustic (PEA) method has recently been adapted to liquids. It has been applied to various liquids under electrical constraints. Its application to liquids without electrical constraint, with the aim of measuring the natural distribution of electric charges (electrical double layer), is not widely done. This work proposes to apply the PEA method to various liquids without subjecting it to an electrical constraint, in order to assess its capability to measure the electrical double layer. The influence of different parameters on the response is presented and the trends obtained are compared with the trends expected from a theoretical model.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"138 ","pages":"Article 104161"},"PeriodicalIF":2.1,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907502","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

Electrical conductivity as an indicator for early warning detection systems in chemical reactors 电导率作为化学反应器预警检测系统的指标

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics

Pub Date : 2025-08-28 DOI: 10.1016/j.elstat.2025.104154

Giuseppe Andriani , Gianmaria Pio , Chiara Vianello , Paolo Mocellin , Ernesto Salzano

Early Warning Detection Systems (EWDS) are essential for preventing runaway reactions in chemical reactors by providing timely alerts before uncontrolled exothermic events. Conventional EWDS rely predominantly on temperature monitoring; however, industrial temperature sensors often suffer from delayed response and are highly dependent on sensor positioning, limiting their effectiveness during rapid or localized thermal excursions.

This study introduces an alternative detection strategy based on electrical conductivity monitoring, which offers faster response times and higher sensitivity—especially in reactions where ionic or charged species are released at the onset of runaway. A theoretical framework is presented to demonstrate how this method can overcome key limitations of temperature-based systems, enabling more accurate and responsive detection.

Compared to the benchmark divergence method, the conductivity-based approach detects runaway onset within 2 °C of the true temperature (vs.

\sim

3 °C deviation with temperature sensors), and anticipates the event 200–300 s before peak temperature. This allows earlier intervention and significantly reduces the maximum temperature rise at onset (by 30%–40% compared to temperature-based detection). Integrating advanced conductivity sensors into existing EWDS infrastructures could markedly improve reactor safety and control. This work lays the foundation for future experimental validation and broader adoption in chemical reaction engineering safety systems.

早期预警检测系统（EWDS）通过在未控制的放热事件发生前提供及时警报，对防止化学反应器中的失控反应至关重要。传统的EWDS主要依赖于温度监测；然而，工业温度传感器经常受到延迟响应的影响，并且高度依赖于传感器定位，这限制了它们在快速或局部热漂移时的有效性。本研究介绍了一种基于电导率监测的替代检测策略，它提供了更快的响应时间和更高的灵敏度-特别是在失控开始时释放离子或带电物质的反应中。提出了一个理论框架来证明这种方法如何克服基于温度的系统的关键限制，从而实现更准确和响应更快的检测。与基准发散方法相比，基于电导率的方法可以在真实温度的2°C范围内检测到失控的发生（与温度传感器的偏差为~ 3°C），并在峰值温度前200-300秒预测事件。这使得早期干预成为可能，并显著降低了发病时的最高温升（与基于温度的检测相比降低了30%-40%）。将先进的电导率传感器集成到现有的EWDS基础设施中可以显著提高反应堆的安全性和控制。这项工作为未来的实验验证和在化学反应工程安全系统中的广泛应用奠定了基础。

{"title":"Electrical conductivity as an indicator for early warning detection systems in chemical reactors","authors":"Giuseppe Andriani , Gianmaria Pio , Chiara Vianello , Paolo Mocellin , Ernesto Salzano","doi":"10.1016/j.elstat.2025.104154","DOIUrl":"10.1016/j.elstat.2025.104154","url":null,"abstract":"<div><div>Early Warning Detection Systems (EWDS) are essential for preventing runaway reactions in chemical reactors by providing timely alerts before uncontrolled exothermic events. Conventional EWDS rely predominantly on temperature monitoring; however, industrial temperature sensors often suffer from delayed response and are highly dependent on sensor positioning, limiting their effectiveness during rapid or localized thermal excursions.</div><div>This study introduces an alternative detection strategy based on electrical conductivity monitoring, which offers faster response times and higher sensitivity—especially in reactions where ionic or charged species are released at the onset of runaway. A theoretical framework is presented to demonstrate how this method can overcome key limitations of temperature-based systems, enabling more accurate and responsive detection.</div><div>Compared to the benchmark divergence method, the conductivity-based approach detects runaway onset within 2 °C of the true temperature (vs. <span><math><mo>∼</mo></math></span> 3 °C deviation with temperature sensors), and anticipates the event 200–300 s before peak temperature. This allows earlier intervention and significantly reduces the maximum temperature rise at onset (by 30%–40% compared to temperature-based detection). Integrating advanced conductivity sensors into existing EWDS infrastructures could markedly improve reactor safety and control. This work lays the foundation for future experimental validation and broader adoption in chemical reaction engineering safety systems.</div></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"138 ","pages":"Article 104154"},"PeriodicalIF":2.1,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907499","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

首页上一页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

Journal of Electrostatics

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀