Article
Food Science & Technology
Zhiqin Dong, Xinfu Li, Zhao Liu, Yuhan Wang, Qiang Xiong
Summary: Pulsed electric field (PEF) has potential to enhance salt diffusion in pork, as demonstrated by this study. Pork lions were pretreated with PEF before being brined, and changes in weight, moisture, and salt content were measured and analyzed. The results showed that PEF significantly increased the changes in weight, moisture, and salt content after 8 hours of brining. The effective diffusion coefficient (De) was also increased, indicating enhanced salt diffusion. It was concluded that PEF generated by needle-needle electrodes effectively promotes salt diffusion and shortens salting processing.
JOURNAL OF FOOD SCIENCE
(2023)
Article
Pharmacology & Pharmacy
Nina Rembialkowska, Wojciech Szlasa, Eivina Radzeviciute-Valciuke, Julita Kulbacka, Vitalij Novickij
Summary: This study characterizes the effects of ultra-fast repetition frequency nanosecond pulses and investigates the feasibility of nanosecond pulse protocols for calcium delivery. The results show that high-frequency unipolar pulses are effective for electrochemotherapy, while bipolar symmetric pulses trigger the cancellation phenomenon, limiting the application of drug delivery.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Materials Science, Multidisciplinary
Wenke Chen, Wuyin Jin, Hui Cao
Summary: This research establishes a finite element model of nanoindentation response of piezoelectric materials and analyzes the contact behavior of piezoelectric materials, obtaining key relationships between indentation displacement, electric potential, and contact force. The results demonstrate the non-monotonic relationship of stress and electric fields at the contact boundary.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Multidisciplinary
Azwan Mahmud
Summary: In this paper, the impulse response of various earth electrodes under high impulse conditions is investigated through experiments. The experimental results show that there is little difference in the impulse resistance of these electrodes with increasing current magnitudes, which may be attributed to the balance between the critical electric value of the soil and the electric field of the electrodes.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Jonas Haug, Stefan Auer, Calvin Frees, Barbara Brinkmeier, Ruben Tutzer, Daniel S. Hayes, Markus Aufleger
Summary: Downstream-migrating fish in rivers are at risk of swimming through turbines at run-of-river hydropower plants, which may result in high mortality rates. The FishProtector technology retrofits existing bar racks with additional electrodes to create a hybrid barrier, effectively preventing fish passage. Ethohydraulic experiments were conducted to investigate the effects of this behavioral barrier on fish, and the results showed that the fish-protection rate could be significantly increased from 62% to 96% with electrified setups.
Article
Engineering, Manufacturing
Chao-Ching Ho, Chn-Yi Kao
Summary: This paper presents an innovative approach for detecting laser-induced plasma in a laser processing system using an external sensing electric field. The system utilizes a sensing electrode to capture the plasma signal, which is then sent to the controller in real-time through a built-in signal sampling rate system. The system is capable of accurately sensing the pulse repetition rate from 0 to 500 kHz and has a signal sampling rate of up to 1 MHz. By analyzing the plasma signal and controlling the servo motor, the controller adjusts the laser focus position to achieve real-time detection of laser drilling. Several configurations of electric field assistance were tested, and the experiment results show significant improvements in drilling efficiency and precision when the electric field is present.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Chemistry, Multidisciplinary
Nicholas J. Williams, Ieuan D. Seymour, Dimitrios Fraggedakis, Stephen J. Skinner
Summary: In this study, the activation losses at solid oxide fuel cell (SOFC) electrodes were investigated by simulating charge transfer using density functional theory (DFT). The electrostatic responses to the electric field were found to correlate with experimental data for different reduction reactions at mixed ionic-electronic conducting (MIEC) electrode surfaces. The study also highlighted the importance of decoupled ion-electron transfer and charged adsorbates on the performance of electrodes under nonequilibrium conditions. The findings have potential implications in energy storage and catalysis.
Article
Engineering, Chemical
Haoran Dong, Hui Zhou, Yuheng Feng, Haisheng Li, Yinghua Chen, Xiaolong Wen
Summary: The study explored the efficient decarbonization of fly ash using a nonlinear electric field structure, showing promising results under certain conditions. The loss on ignition is related to voltage, charge-mass ratio, and feed quantity, with suitable conditions being 20 m/s air velocity, 30 kV voltage, 1.1-1.2 nC/g charge-mass ratio, and 5000/s feed quantity.
ADVANCED POWDER TECHNOLOGY
(2021)
Review
Chemistry, Physical
Nikolai N. Kalikin, Andrei L. Kolesnikov, Yury A. Budkov
Summary: The number of electrochemical applications involving ionic liquids and their polymerized forms is increasing. However, theoretical descriptions of polymeric ionic liquid-based electrochemical systems are lacking compared to monomeric ionic liquid-based systems. In this study, recent studies on basic and applied research of polymeric ionic liquids are briefly outlined, and a theoretical model for the behavior of polymeric ionic liquids and their solutions on charged electrodes is discussed. The obtained capacitance, electrostatic potential, and ionic concentration profiles are summarized, and further development of theoretical descriptions for polymeric ionic liquids is proposed.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Proceedings Paper
Engineering, Biomedical
D. L. L. S. Andrade, J. R. da Silva, R. Guedert, G. B. Pintarelli, J. A. Berkenbrock, S. Achenbach, D. O. H. Suzuki
Summary: This paper investigates how misplacement of electrode needles affects the effectiveness of electrochemotherapy. The study finds that inward bending of the needles increases electric current, while outward bending disturbs the electric field distribution, both leading to a loss in treatment effectiveness. Based on these findings, it is recommended to avoid using electrodes with mechanical deformations during electrochemotherapy treatments.
XXVII BRAZILIAN CONGRESS ON BIOMEDICAL ENGINEERING, CBEB 2020
(2022)
Article
Materials Science, Textiles
Hao Shi, Pingfan Ning, Pingjuan Niu, Tianbo Lu, Shan Wang
Summary: The low yield of traditional needle electrospinning and the balance between electric field force and droplet surface tension are key limiting factors for successful nanofiber preparation. The roller-type electrospinning system significantly increases throughput, with the introduction of an auxiliary electrode optimizing the electric field and reducing edge effects on the collecting plate.
JOURNAL OF INDUSTRIAL TEXTILES
(2021)
Article
Engineering, Environmental
Lingbo Huang, Ling Chen, Ping OuYang, Boping Ren
Summary: The treatment of waste oil resources can prevent their pollution to the ecological environment, and the demulsification and dehydration of water-in-oil (W/O) emulsions are crucial for waste oil resource treatment. Electrocoalescence technology is a fast-developing emulsion breaking and separation technology, and a non-uniform matrix electrode structure was proposed to investigate its effects on emulsion demulsification and dehydration. The results showed that the matrix electrode had better dehydration effectiveness compared to traditional electrode structures. The study provides innovative ideas for the design of efficient electric coalescers and useful information for selecting the right electric field parameter.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Jong E. Han, Camille Aron, Xi Chen, Ishiaka Mansaray, Jae-Ho Han, Ki-Seok Kim, Michael Randle, Jonathan P. Bird
Summary: The significant difference between predicted and experimental switching fields in correlated insulators under a far-from-equilibrium DC electric field necessitates a reevaluation of current microscopic understanding. The authors introduce a generic model of electrons coupled to an inelastic phononic medium and show that an electron avalanche can occur in the bulk limit of such insulators at arbitrarily small electric field. The quantum avalanche is triggered by the generation of in-gap states through a multi-phonon emission process, leading to a premature and partial collapse of the correlated gap.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Fluids & Plasmas
B. Trotabas, R. Gueroult
Summary: The benefits of thermionic emission from negatively biased electrodes in a magnetized plasma are examined in terms of its effects on the sheath and plasma potential variation along magnetic field lines. It is found that thermionic emission can improve control over the plasma potential at the sheath edge, but it also leads to an increase of the plasma potential drop along magnetic field lines.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Textiles
Hao Shi, Pingjuan Niu, Pingfan Ning, Shan Wang
Summary: This paper reports a novel system for the efficient production of multi-production nanofibers through electrospinning. By varying the voltage and collector radius, the diameter and yield of the nanofibers were investigated. The results show that the diameter and productivity of nanofibers are affected by the electric field intensity. This method not only improves productivity, but also reduces the influence of solvent evaporation, providing support for large-scale production of nanofibers in the future.
JOURNAL OF INDUSTRIAL TEXTILES
(2022)
Article
Engineering, Biomedical
Mauricio Martins Taques, Raul Guedert, Kleber Moreno, Marcelo Monte Mor Rangel, Daniela Ota Hisayasu Suzuki
Summary: Osteosarcoma is a bone cancer more common in dogs than in humans. Electrochemotherapy, combining high-intensity electric fields and anti-cancer drugs, is an effective and safe treatment option for osteosarcoma, with the potential to improve outcomes in both canine and human patients.
Article
Engineering, Electrical & Electronic
Jorge A. Costa Jr, Pedro X. de Oliveira, Lucenara S. Pereira, Jessica Rodrigues, Daniela O. H. Suzuki
Summary: This paper presents a theoretical study on the sensitivity of the nuclear electroporation model to real values, focusing on sensitivity to pulses of the order of ns and providing guidance for nanosecond pulse applications in cell membrane and nuclear envelope electroporation. The model is shown to be more sensitive to nuclear electrical properties, with some influence from cellular parameters. Results are summarized in graphs serving as an electroporation guide for ns pulses.
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
(2021)
Article
Engineering, Electrical & Electronic
Jose-Alvim Berkenbrock, Matthias Mail, Garth Wells, Torsten Scherer, Sven Achenbach
Summary: Microfluidics is a rapidly growing technology field that has applications in important areas such as health and agriculture sciences. Microfluidic devices are used to analyze biological samples, and resistive pulse sensors (RPS) have been traditionally used for detecting and counting cells. Recent advancements in micro- and nanofabrication techniques have enabled the fabrication of resistive pulse sensors with nanopores (nano-RPS). This study presents a tridimensional numerical model of a nano-RPS and validates its accuracy with experimental data, showing its potential for evaluating fabrication quality parameters.
IEEE TRANSACTIONS ON NANOTECHNOLOGY
(2022)
Article
Engineering, Biomedical
Lucas Bertinetti Lopes, Guilherme Brasil Pintarelli, Carla Sales Ferreira dos Santos, Daniela Ota Hisayasu Suzuki
Summary: Electrochemotherapy (ECT) relies on a pulsed electric field (PEF) to treat tumors, but the distribution of PEF may be affected by the conductivity and structure of biological tissue. Through experiments and numerical simulations, the optimal gel conditions can be determined to enhance treatment efficacy.
MEDICAL ENGINEERING & PHYSICS
(2021)
Article
Multidisciplinary Sciences
Daniella L. L. S. Andrade, Raul Guedert, Guilherme B. Pintarelli, Marcelo M. M. Rangel, Krishna D. Oliveira, Priscila G. Quadros, Daniela O. H. Suzuki
Summary: Electrochemotherapy is a selective electrical-based cancer treatment, but using deflected electrodes is not recommended. Mechanical deformations of needle electrodes can affect the distribution of the electric field and cause treatment pitfalls.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Analytical
Guilherme B. Pintarelli, Jessica R. da Silva, Wuqiang Yang, Daniela O. H. Suzuki
Summary: A specific pulsed electric field protocol is used to induce electroporation, which has various applications in the food industry, laboratories, and medical field. The study shows that impedance measurement at certain frequencies can be used to detect electroporation and provides a new approach for the design and implementation of electroporation systems.
Article
Biochemistry & Molecular Biology
Raul Guedert, Guilherme Brasil Pintarelli, Fatima Regina Mena Barreto Silva, Daniela Ota Hisayasu Suzuki
Summary: Electroporation changes cell membrane structure and tissue electrical properties. The magnitude of the electric current increases with the repetition rate of the electrochemotherapy protocol. Experiments show that the current increases when the repetition rate is changed from 1 Hz to 5 kHz. Dynamic models are necessary to analyze different protocol signatures.
BIOELECTROCHEMISTRY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Barbara O. M. Taques, Humberto R. Gamba, Danusa Menegaz, Fatima R. M. B. Silva, Daniela O. H. Suzuki
Summary: Sertoli cells are crucial for the male reproductive system by providing support and nutrients for ongoing spermatogenesis. This study used mathematical modeling and experimental verification to demonstrate the involvement of potassium channels and the Na+/K+ pump in the rapid responses of Sertoli cells, as well as the importance of ionic balance in these responses.
BIOMEDICAL PHYSICS & ENGINEERING EXPRESS
(2023)
Article
Biochemistry & Molecular Biology
Daniella L. L. S. Andrade, Guilherme B. Pintarelli, Juliana Rosa, Isabela B. Paro, Pedro J. T. Pagano, Julia C. N. Silva, Daniela O. H. Suzuki
Summary: Electrochemotherapy (ECT) and Irreversible electroporation (IRE) are cancer treatments that rely on the distribution of electric fields in tissues. This study developed and validated a conductivity model using cavendish banana tissue, which enables quick evaluation of tissue electroporation through staining. The study also optimized three commonly used electroporation models and found that the banana tissue had similar dielectric parameters to potato tissue.
BIOELECTROCHEMISTRY
(2023)
Proceedings Paper
Engineering, Biomedical
J. F. Rodrigues, Daniella L. L. S. Andrade, R. Guedert, D. O. H. Suzuki
Summary: Cancer is the second leading cause of death worldwide. Chemotherapy has limitations in terms of speed and side effects, but Electrochemotherapy (ECT) shows promise in speeding up the treatment process using high-intensity electrical pulses. Pre-treatment simulations can help determine the effectiveness of ECT in different tumors.
XXVII BRAZILIAN CONGRESS ON BIOMEDICAL ENGINEERING, CBEB 2020
(2022)
Proceedings Paper
Engineering, Biomedical
L. B. Lopes, G. B. Pintarelli, D. O. H. Suzuki
Summary: Electrochemotherapy combines chemotherapy with electroporation to enhance drug delivery into cancer cells. Conductive gels can be used to fill irregular tissue structures and make the electric field distribution homogenous. In silico and in vitro studies are crucial for analyzing electric field distribution and improving treatment accuracy.
XXVII BRAZILIAN CONGRESS ON BIOMEDICAL ENGINEERING, CBEB 2020
(2022)
Proceedings Paper
Engineering, Biomedical
R. Guedert, M. M. Taques, I. B. Paro, M. M. M. Rangel, D. O. H. Suzuki
Summary: Cancer, especially osteosarcoma, is a common cause of death in dogs. Traditional treatments like surgery and chemotherapy are commonly used, but electrochemotherapy is emerging as a potential treatment option. However, the use of electric stimulation near sensitive tissues is a concern. In this study, in silico simulations were conducted to evaluate the electric current density during electrochemotherapy treatment of dog's head osteosarcoma. The results showed that even in the worst-case scenario, the maximum electric current density was still below the safety limit, indicating that electrochemotherapy can be considered safe near the brain.
XXVII BRAZILIAN CONGRESS ON BIOMEDICAL ENGINEERING, CBEB 2020
(2022)
Proceedings Paper
Engineering, Biomedical
D. L. L. S. Andrade, J. R. da Silva, R. Guedert, G. B. Pintarelli, J. A. Berkenbrock, S. Achenbach, D. O. H. Suzuki
Summary: This paper investigates how misplacement of electrode needles affects the effectiveness of electrochemotherapy. The study finds that inward bending of the needles increases electric current, while outward bending disturbs the electric field distribution, both leading to a loss in treatment effectiveness. Based on these findings, it is recommended to avoid using electrodes with mechanical deformations during electrochemotherapy treatments.
XXVII BRAZILIAN CONGRESS ON BIOMEDICAL ENGINEERING, CBEB 2020
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Jose-Alvim Berkenbrock, Garth Wells, Matthias Mail, Torsten Scherer, Sven Achenbach
2021 IEEE 21ST INTERNATIONAL CONFERENCE ON NANOTECHNOLOGY (IEEE NANO 2021)
(2021)
Article
Engineering, Electrical & Electronic
Guilherme B. Pintarelli, C. T. S. Ramos, J. R. da Silva, M. J. Rossi, D. O. H. Suzuki
Summary: The study investigated the effects of irreversible electroporation on wine yeast and methods of verification. It was found that irreversible electroporation can effectively control yeast numbers without compromising food palatability under specific conditions.
IEEE SENSORS JOURNAL
(2021)