Article
Chemistry, Analytical
Benedikt Sapotta, Matthias Schwotzer, Matthias Franzreb
Summary: This work aims to provide a detailed understanding of the challenges related to the computation of the relative static permittivity and electrolytic conductivity of a sample medium from its impedance response recorded with interdigitated electrode (IDE) geometries. Impedance data for nine sample media using two distinct IDE geometries were measured and evaluated, with particular emphasis on compensating for parasitic influences affecting the impedance response.
Article
Chemistry, Physical
T. M. Cassol, A. R. Duarte, C. S. Ribas, P. R. G. Fernandes
Summary: Broadband Dielectric Spectroscopy (BDS) technique was applied to investigate two ionic liquids, MC1 and MC2, analyzing the variations of complex permittivity and complex conductivity with temperature. The results provide insights into the electrical properties of ionic liquids at different temperatures.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Review
Agronomy
Hailong He, Neil C. Turner, Kailin Aogu, Miles Dyck, Hao Feng, Bingcheng Si, Jinxin Wang, Jialong Lv
Summary: This paper reviews the principles, calibration, sensor configuration, and sensor installation of electromagnetic methods for measuring stem water content, and discusses future developments and technological prospects.
AGRICULTURAL AND FOREST METEOROLOGY
(2021)
Article
Materials Science, Multidisciplinary
A. S. Yahia, A. E. Hassanien, F. Mohamed, R. M. Mahani, G. M. Turky, A. A. Ramadan
Summary: This paper reports on the molecular dynamic study of ionic deep eutectic mixtures prepared by mixing glycerol with hydroxyl ammonium chloride. The study found that the dielectric spectra of the mixtures were affected by electrode polarization and dc conductivity at low frequencies. The addition of 1.5 wt.% HACL significantly increased the dc conductivity of Gly by about 3 orders of magnitude.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Polymer Science
S. Pervaiz, I. A. Khan, S. A. Hussain, N. Kanwal, A. Farid, M. Saleem
Summary: This research successfully synthesized flexible sheet-like dielectric polymer nanocomposites containing 5% ZnO and 15, 20% SiO2 nano-fillers, demonstrating high dielectric permittivity and low dissipation factor. The synthesized compositions showed uniform distribution of nanoparticles in the polymer matrix, with significant increase in dielectric constant and relatively low dissipation factor. The AC conductivity of the synthesized flexible sheets was found to be promising for better capacitive performance compared to pure PVA.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Chemistry, Physical
Sougata Koner, Pratik Deshmukh, Anju Ahlawat, A. K. Karnal, S. Satapathy
Summary: The dielectric, conductivity, and magneto-dielectric properties of LBMO/P(VDF-TrFE) nanocomposite films with different volume percentages of LBMO nanoparticles were studied. The permittivity remained stable with temperature increase, conductivity followed Johnscher's law indicating high insulating nature of the films. Magneto-dielectric study showed negative MD effect, with a maximum of -0.71% MD observed at 7000 Oe for 2% LBMO/P(VDF-TrFE) nanocomposite films.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Jiangtao Fan, Zhen Long, Haitao Zhou, Gang He, Zhanggui Hu
Summary: (Tm+Nb) co-doped TiO2 ceramics were prepared and their phase, microstructure, and dielectric properties were investigated. The ceramics with a co-doping concentration of 0.01 exhibited ultralow dielectric loss and colossal permittivity, showing excellent temperature and frequency stability in a certain range. The dielectric properties of the ceramics were influenced by several factors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Chemical
Jose C. Diaz, Jovan Kamcev
Summary: Accurate measurements of membrane ionic conductivity are essential for understanding ion transport, but there is no standardized technique for such measurements. Discrepancies in reported ionic conductivity values for common commercial membranes are common. This study presents a non-invasive method based on electrochemical impedance spectroscopy to address external resistances in thin membranes equilibrated with dilute salt solutions.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Materials Science, Ceramics
Ekaterina Koroleva, Ilya Reshetov, Ekaterina Babich, Sergey Vakhrushev, Dmitry Tagantsev, Andrey Lipovskii
Summary: Broadband dielectric spectroscopy (BDS) was used to investigate polarization phenomena in alkaline silicate glasses. A consistent model of poled glasses was proposed and it was found that the electric properties of the polarized layers depend on the structure of the anodic electrode.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Biochemistry & Molecular Biology
Alexey V. V. Butko, Vladimir Y. Y. Butko, Yurii A. A. Kumzerov
Summary: The correct formula for double-layer capacitance (C-dl) in graphene interfaces with liquid is controversial. We proposed a model that considers the capacitance of a charge accumulation layer (C-ca) and a capacitance-limiting edge region (C-e) with negligible electric susceptibility and conductivity. These capacitances are connected in series, and C-dl can be obtained from 1/C-dl = 1/C-ca + 1/C-e. Experimental results on the graphene/water interface capacitance imply that the distance from charge carriers in graphene to molecular charges at the interface is around 0.05-0.1 nm. The generalized model predicts a capacitance upper limit of approximately 18 μF/cm2.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Bappa Sona Kar, M. N. Goswami, P. C. Jana
Summary: La2O3-substituted polycrystalline 0.56BiFeO(3)-0.44BaTiO(3) ceramics were prepared via conventional solid-state reaction process, with investigations on crystal structure, dielectric, magnetic, and impedance properties. La substitution enhanced the multiferroic nature of the materials, as evidenced by improved energy storage density and remnant magnetization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
A. Barua, S. K. Dey, S. K. Sabyasachi, S. Kumar
Summary: Perovskites BNTN and BNTS, consisting of two rare earth elements and prepared by the ceramic method, crystallize in different space groups and show good agreement between structural analysis and spectroscopic studies. Dielectric and AC conductivity properties were studied at different temperatures and frequencies, revealing a polydispersive relaxation phenomenon and indicating the influence of polaron hopping mechanism on their electrical and dielectric response.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Water Resources
Mohamed Mahmoud Gomaa
Summary: This article explores the electrical properties of synthetic specimens and finds that their response depends on pH and surface charge. Experimental results show variations in electrical parameters within the frequency range of 0.1 to 10(5) Hz. The study also highlights the influence of frequency, concentration, composition, and arrangement on the electrical characteristics.
APPLIED WATER SCIENCE
(2023)
Article
Electrochemistry
Nicolas Gauthier, Anshuman Agrawal, Olivier Dubrunfaut, Sylvain Franger, Bernard Lestriez, Jean-Claude Badot, Loic Assaud
Summary: This study aims to understand the interactions between liquid electrolyte and solid composite electrode in a Li-ion battery. By replacing the common active material with an insulating gamma-Al2O3 compound, the interaction between carbon black electronic additive and liquid electrolyte was detected. Broadband dielectric spectroscopy (BDS) and electrochemical impedance spectroscopy (EIS) were used to characterize charge transport at different scales. The influence of ion adsorption on carbon black surface on electron transport was emphasized and explained.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
D. D. L. Chung, Dang Q. Duong
Summary: A new method of measuring the permittivity of silicon wafers is introduced to eliminate the dependence on silicon resistivity and electrode quality. By using N-segment aluminum-foil electrodes attached to both surfaces of the wafer, the permittivity can be obtained and the effect of electrode-specimen interface capacitance can be removed. The method allows for spatially resolved permittivity-based quality sensing.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Biophysics
Josette Zaklit, Gale L. Craviso, Normand Leblanc, P. Thomas Vernier, Esin B. Sozer
Summary: The cellular effects of nanosecond-pulsed electric field exposures can be attenuated by bipolar pulse cancellation using equal duration and amplitude positive and negative phases, with response restoration achieved through appropriate interphase intervals. The modulation of Ca2+ responses in neural-type cells with ultrashort pulses demonstrates the potential for using nanosecond bipolar pulse technologies for neuromodulation applications.
BIOPHYSICAL JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Esin B. Sozer, Andrei G. Pakhomov, Iurii Semenov, Maura Casciola, Vitalii Kim, P. Thomas Vernier, Christian W. Zemlin
Summary: Short-duration, strong electric field pulses can be used for various applications, but nanosecond pulses require high field strengths. A theoretical model is presented to describe the effects of pulse trains on membranes, providing a method to calculate membrane charging time constant. Nanosecond pulses are found not more effective than longer pulses in charging nerve fibers, but considering multiple charging time constants improves the model's predictability for stimulating cardiomyocytes. The model also shows that pulse trains can cause significant oscillations of intracellular membrane potential.
BIOELECTROCHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Josette Zaklit, Alex Cabrera, Aaron Shaw, Rita Aoun, P. Thomas Vernier, Normand Leblanc, Gale L. Craviso
Summary: The study found that under certain conditions, ultra-short electric pulses can stimulate the release of catecholamines through exocytosis, with real-time observations showing that the release is Ca2+-dependent and the release events are relatively prolonged. Furthermore, the effectiveness of this stimulation method was demonstrated, indicating its potential as a novel electrostimulation modality for neurosecretion.
BIOELECTROCHEMISTRY
(2021)
Review
Biochemistry & Molecular Biology
M. B. Hawn, E. Akin, H. C. Hartzell, I. A. Greenwood, N. Leblanc
Summary: This article summarizes the functions and regulatory mechanisms of Ca2+-activated Cl- channels, focusing on recent studies on ANO1 and its regulation by internal Ca2+, membrane lipids, and protein partners. It also reviews the basic properties, historical controversies, and molecular structures of CaCCs.
Editorial Material
Urology & Nephrology
Normand Leblanc
Summary: Hypertension is a major risk factor for heart disease and stroke, and the novel molecule TMinh-23 shows potential as an effective treatment for hypertension.
KIDNEY INTERNATIONAL
(2021)
Article
Biochemistry & Molecular Biology
Lisha Yang, Sophia Pierce, Thomas W. Gould, Gale L. Craviso, Normand Leblanc
Summary: The current evoked by a single pulse in bovine adrenal chromaffin cells may be carried by TRPC4/5 channels and the NALCN channel. Understanding the biophysical properties of this conductance is crucial for the development of NEP stimulation approaches for neuromodulation.
ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS
(2022)
Meeting Abstract
Biophysics
Flavia Mazzarda, Esin B. Sozer, Claudia Muratori, P. Thomas Vernier
BIOPHYSICAL JOURNAL
(2022)
Meeting Abstract
Biophysics
Federica Castellani, Maria Laura Fernandez, Marcelo Risk, P. Thomas Vernier
BIOPHYSICAL JOURNAL
(2022)
Article
Plant Sciences
Tultul Saha, Joydeep Aoun, Paramita Sarkar, Andrea J. Bourdelais, Daniel G. Baden, Normand Leblanc, John M. Hamlyn, Owen M. Woodward, Kazi Mirajul Hoque
Summary: Cucumber fruit extract (CCE) exerts significant effects on intestinal chloride secretion and motility, potentially improving intestinal function by activating TMEM16A chloride channels.
PHARMACEUTICAL BIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Tultul Saha, Joydeep Aoun, Mikio Hayashi, Sheikh Irshad Ali, Paramita Sarkar, Prasanta Kumar Bag, Normand Leblanc, Nadia Ameen, Owen M. Woodward, Kazi Mirajul Hoque
Summary: TMEM16A is a calcium-activated chloride channel that plays critical roles in intestinal chloride secretion. The protein primarily localizes to the luminal side and forms a complex with NHERF1, interacting with CFTR through a PDZ-based interaction for efficient and specific cholinergic stimulation of intestinal chloride secretion.
BIOCHEMISTRY AND BIOPHYSICS REPORTS
(2021)
Meeting Abstract
Biophysics
Flavia Mazzarda, Esin B. Sozer, Julia L. Pittaluga, Claudia Muratori, P. Thomas Vernier
BIOPHYSICAL JOURNAL
(2021)
Meeting Abstract
Biophysics
Federica Castellani, Tatiana Zvoraneva, Esin B. Sozer, P. Thomas Vernier
BIOPHYSICAL JOURNAL
(2021)
Article
Biochemistry & Molecular Biology
Priyanga Kumar, Noel Nesakumar, Jayashree Gopal, Sakthivel Sivasubramanian, Srinivasan Vedantham, John Bosco Balaguru Rayappan
Summary: This study developed an electrochemical biosensor for measuring MG levels in the plasma of type-2 diabetes mellitus patients. The biosensor showed a wide linear concentration range, high sensitivity, and a 90% correlation with ELISA data. It also exhibited a significant correlation with HbA1c and fasting plasma glucose levels.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Cristina Tortolini, Valeria Gigli, Antonio Angeloni, Federico Tasca, Nguyen T. K. Thanh, Riccarda Antiochia
Summary: The development of a novel voltammetric immunosensor for the detection of salivary MMP-8 at the point-of-care is described. The sensor showed good performance and comparable results to the conventional ELISA method when tested in real saliva samples. This biosensor is single-use, cost-effective, and requires a small quantity of test medium and a short preparation time.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Rimsha B. Jamal, Ulrich Bay Gosewinkel, Elena E. Ferapontova
Summary: Pathogen-triggered infections are a severe global threat to human health. Researchers have developed a fast and inexpensive electrocatalytic aptamer assay for the specific and ultrasensitive detection of E. coli, allowing for timely treatment and prevention. The method is fast, sensitive, and can be used in field and point-of-care applications for analysis of bacteria in the human environment.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Miao Liu, Yuwei Wang, Shanshan Tang, Wei Wang, Axin Liang, Aiqin Luo
Summary: An unlabeled ratiometric molecular imprinted electrochemiluminescence sensor was developed for the determination of trace uric acid using MXene@NaAsc, CdSe@ZnS quantum dots, and molecularly imprinted polymer composites modified glass carbon electrode. This sensor, with easy preparation, great selectivity, and excellent sensitivity, successfully detected uric acid in human serum.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Charlotte Da Silva, Camille Lamarche, Carole Pichereaux, Emmanuelle Mouton-Barbosa, Gauthier Demol, Sebastien Boisne, Etienne Dague, Odile Burlet-Schiltz, Flavien Pillet, Marie-Pierre Rols
Summary: Low-energy electron beams (LEEB) are a safe and practical sterilization solution for industrial applications. To address the limitations of LEEB, we developed a low-energy pulsed electron beam generator (LEPEB) that can effectively and efficiently eradicate bacteria in a wide range of industrial applications.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Daniel Dobrovodsky, Ales Danhel, Daniel Renciuk, Jean-Louis Mergny, Miroslav Fojta
Summary: In this study, N-methyl mesoporphyrin IX (NMM) was utilized as a voltammetric probe for the electrochemical detection of G4s. The detection of NMM was achieved by cyclic voltammetry on a hanging mercury drop electrode (HMDE) with a limit of detection (LOD) of 40 nM. The reduction signal of NMM was found to be significantly higher when G4 oligodeoxynucleotides (G4 ODNs) were present compared to single- or double-stranded ODNs or unfolded ODNs capable of forming G4s. Gradual transition from unstructured single strand to G4, induced by increasing concentrations of the G4 stabilizing K+ ions, was detected for the first time using electrochemical methods. Circular dichroism spectroscopy provided support for the obtained results. This work expands on the utilization of electrochemical probes for DNA secondary structure recognition and offers a proof of principle for the development of novel electroanalytical methods for nucleic acid structure studies.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Mengjiao Zhu, Yu Liu, Meiyue Wang, Tao Liu, Zhenyu Chu, Wanqin Jin
Summary: Early rapid diagnosis of COVID-19 is crucial for reducing the risk of severe symptoms and loss of lung function. Researchers have proposed an ultrafast and ultrasensitive DNA sensor that can accurately detect the virus in a short period of time, with outstanding selectivity.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Fatima-Zahra Ait-Itto, James A. Behan, Mathieu Martinez, Frederic Barriere
Summary: This study investigated the feasibility of using ancient marine sediments as inoculum for bioanode development in microbial fuel cells (MFC). The results showed the presence of two exoelectrogenic bacterial genera in these iron-rich sediments and confirmed that the development of the bioanode derived from the native microbiota. This study has important implications for understanding the role of these bacteria in broader paleoenvironmental phenomena.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Issa Fall, Bastien Doumeche, Sofiene Abdellaoui, Caroline Remond, Harivony Rakotoarivonina, Marjorie Ochs
Summary: This article presents a novel electrochemical tool based on lignin-coated paper electrodes for the detection and characterization of ligninolytic activity. The suitability of this method has been demonstrated using a catalaseperoxidase isolated from Thermobacillus xylanilyticus.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Chenyi Zhuo, Dehong Yu, Jiuying Cui, Zichun Song, Qianli Tang, Xianjiu Liao, Zhao Liu, Ning Xin, Lu Lou, Fenglei Gao
Summary: A label-free detection strategy for quantification of Apolipoprotein A4 (Apo-A4) has been developed based on rolling circle amplification (RCA) and proximity hybridization-induced DNAzyme-driven bipedal DNA walker. This method shows high sensitivity and selectivity for a wide range of protein targets.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Niloufar Fattahi, Jeffrey Reed, Evan Heronemus, Priyasha Fernando, Ryan Hansen, Prathap Parameswaran
Summary: In this study, polyethylene glycol hydrogels were developed as protective coatings for electroactive biofilms, improving their viability under low resource conditions and ammonia-N shocks.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Xiaopeng Hou, Qiongyi Cheng, Hui Wang
Summary: A self-cleaning paper-based microfluidic biosensor was developed using hydrophobic paper decorated with polymeric octadecyl trichlorosilane. The biosensor showed improved performance and could effectively measure the concentration of copper ions in livestock feed and manure.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Yanling Zhang, Jie Wang, Min Liu, Yun Ni, Yao Yue, Dawei He, Ruijiang Liu
Summary: An innovative electrochemical biosensor has been developed for sensitive detection of HER2 protein, an important tumor marker for breast cancer diagnosis and treatment evaluation. The biosensor utilizes specific recognition probes and nanomaterials, along with a unique sensing strategy, to achieve ultra-low detection limit and demonstrate excellent selectivity, reproducibility, and stability.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Humayun Amir, Vasanth Subramanian, Sundaram Sornambikai, Nagamony Ponpandian, Chinnusamy Viswanathan
Summary: In this study, the electrochemical detection of breast cancer biomarker HER2 was successfully achieved using the N-CQDs/GS as the detector. The BSA-modified HER2 Antibody/N-CQDs/GS immunoelectrode preserved excellent activity for the biosensor, while the GS electrode provided high stability and conductivity. The method exhibited a low detection limit and optimal specificity, stability, and reproducibility for detecting HER-2 protein in untreated blood samples from breast cancer patients.
BIOELECTROCHEMISTRY
(2024)
Article
Biochemistry & Molecular Biology
Ilona Uzieliene, Anton Popov, Raminta Vaiciuleviciute, Gailute Kirdaite, Eiva Bernotiene, Almira Ramanaviciene
Summary: This review discusses the application of polypyrrole (Ppy), an electroconductive polymer, in cell culture experiments with electrical stimulation (ES) and its potential for tissue regeneration. Ppy can direct ES to cells and stimulate differentiation towards different cell lineages. Different types of Ppy materials and their combination with active molecules are explored.
BIOELECTROCHEMISTRY
(2024)