Article
Engineering, Electrical & Electronic
Ilia Chiniforooshan Esfahani, Hongwei Sun
Summary: The micropillar-enhanced QCM viscosity measurement device developed in this work achieves ultra-sensitive viscosity measurement of a sample droplet by utilizing the coupled vibration between micropillars and quartz substrate.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Chemistry, Physical
Hajin Lee, Ahyun Kim, Hyun-Seung Kim, Chan-Wook Jeon, Taeho Yoon
Summary: This study verifies the stability of solid electrolyte interphase (SEI) on silicon and its role in fracture inhibition using electrochemical quartz crystal microbalance and scanning electron microscopy. The results show that the fluoroethylene carbonate-derived SEI is stable and can suppress cracking in a thin-film electrode. The study also proposes the mechanism and requirements for a fracture-inhibiting SEI.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yin Zhou, Qianfeng Gu, Yiju Li, Lu Tao, Hao Tan, Kun Yin, Jinhui Zhou, Shaojun Guo
Summary: This study demonstrates the potential of cesium lead bromide perovskite (CsPbBr3) nanocrystals as a high-performance cathode for Li-O-2 batteries, achieving the lowest charge overpotential and best cycling performance among reported perovskite-based Li-O-2 cells, setting a new benchmark. The density functional theory (DFT) calculations further support that the rate-limiting step in the oxygen evolution reaction (OER) process is the decomposition of LiO2, and the weak adsorption strength between CsPbBr3 surfaces and LiO2 contributes to the low charge overpotential in CsPbBr3-based Li-O-2 batteries.
Article
Chemistry, Multidisciplinary
Yih-Chyng Wu, Jianglin Ye, Gengping Jiang, Kun Ni, Na Shu, Pierre-Louis Taberna, Yanwu Zhu, Patrice Simon
Summary: This study investigates the charge of the double layer capacitance at the interface of single layer graphene electrodes with ionic liquids. The presence of solvent is found to increase charge carrier density significantly at the interface, affecting the charge storage mechanism. The carbon structure, particularly the presence of sp(2) carbons, also plays a role in influencing the mechanism of charge storage.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Nanoscience & Nanotechnology
Shengqi Fan, Saida Cora, Niya Sa
Summary: The formation and evolution of the solid electrolyte interphase (SEI) at the magnesium electrolyte/electrode interface were investigated in this study. Different SEI evolution processes were observed for different magnesium electrolyte systems, which provide insights for the design of magnesium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Amey Nimkar, Fyodor Malchick, Bar Gavriel, Meital Turgeman, Gil Bergman, Tianju Fan, Shaul Bublil, Reut Cohen, Michal Weitman, Netanel Shpigel, Mikhael D. Levi, Doron Aurbach
Summary: The withdrawal of water molecules from polymeric electrodes during insertion of chaotropic cations is more significant than that upon insertion of kosmotropic cations, which correlates well with the capacity and rate capability of the polyimide electrodes in examined systems and sheds light on their charge storage mechanism.
ACS ENERGY LETTERS
(2021)
Review
Chemistry, Physical
Wenli Zhang, Jian Yin, Haibo Lin, Ke Lu, Fan Feng, Xueqing Qiu
Summary: Lead-carbon batteries have replaced lead-acid batteries in the fields of renewable energy storage and hybrid electric vehicles due to the positive impact of carbon additives in controlling sulfation and inhibiting hydrogen evolution. The design principles of lead-carbon additives discussed in this paper are crucial for the development of future lead-carbon batteries.
CURRENT OPINION IN ELECTROCHEMISTRY
(2021)
Article
Engineering, Environmental
Jingbo Wang, Mikayla D. Armstrong, Kasia Grzebyk, Riley Vickers, Orlando Coronell
Summary: Through experimental studies, it was found that the effects of different pH values on the partitioning and rejection of alkali metal salts were relatively consistent, indicating that Donnan theory could effectively predict the impact of feed solution pH on salt partitioning and rejection.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Paper & Wood
Weixiang Chen, Bo Chen, Rixin Lv, Milian Wu, Jie Zhou, Beili Lu, Biao Huang, Qilin Lu, Lirong Tang
Summary: CNCs show excellent linearity, high sensitivity, and long-term stability in humidity sensors, making them suitable for high-performance and low-cost sensor design.
Article
Physics, Applied
Hariharan Nhalil, Moty Schultz, Shai Amrusi, Asaf Grosz, Lior Klein
Summary: We present a planar Hall effect magnetometer consisting of a parallel array of permalloy-based elliptical sensors. The array configuration and fabrication parameters are optimized using numerical simulations. The magnetometer achieves equivalent magnetic noise (EMN) of 16 pT/(sic) Hz at 100 Hz, 25 pT/(sic) Hz at 10 Hz, 98 pT/(sic) Hz at 1 Hz, and 470 pT/(sic) Hz at 0.1 Hz. The absence of magnetic flux concentrators in this design highlights its advantages. This straightforward, cost-effective magnetometer shows potential for applications requiring pT resolution at room temperature.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Mahdi Shahmiri, Mark R. Bleackley, Charlotte S. Dawson, Nicole L. van der Weerden, Marilyn A. Anderson, Adam Mechler
Summary: The membrane interaction characteristics of five antifungal plant defensin peptides were studied to assess the role of charge in their membrane interactions. Membrane permeabilizing activity was confirmed and quantified. The viscoelastic characteristics of the membrane interactions were studied using QCM-D, revealing that the peptides were able to bind to all studied model membranes with slightly different viscoelastic character. However, no characteristic disruption patterns were observed, suggesting that their membrane disrupting activity is mostly specific to fungal membranes and increasing peptide charge does not enhance their action.
Article
Engineering, Environmental
Yan Wang, Kaiyuan Xue, Xingyun Zhang, Xu Zhang, Bingjun Yang, Shusheng Xu, Junwei Lang
Summary: This research successfully realizes the in-situ monitoring of energy storage behavior of independent ions using polymeric ionic liquids. It is found that large-sized polymeric imidazole cations cannot enter the active carbon pores, while free anions can. The study also reveals that ion adsorption/desorption is governed by the electrostatic attraction and repulsion of charged particles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Analytical
Xianhe Huang, Qiao Chen, Wei Pan, Yao Yao
Summary: This article introduces the application of quartz crystal microbalance (QCM) and the importance of mass sensitivity. It focuses on the influence of electrode parameters and analyzes the effect of operating frequency on mass sensitivity.
Article
Chemistry, Physical
Miao Liu, Rui Ding, Yi Li, Ailin Wang, Feng Yang, Yuzhen Zhang, Qi Fang, Miao Yan, Jinmei Xie, Zhiqiang Chen, Ziyang Yan, Yuming He, Jian Guo, Xiujuan Sun, Enhui Liu
Summary: This study elucidates the charge storage mechanisms of KMnF3 in neutral aqueous electrolyte and demonstrates the importance of conversion reactions, insertion/extraction reactions, and adsorption in the charging/discharging processes. The constructed aqueous electrochemical capacitors exhibit excellent performance.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Analytical
Pengyi Wang, Mingxiang Ling, Minghai Li
Summary: A new type of ring-shaped interdigital electrode is proposed in this study to enhance the accuracy and repeatability of quartz crystal microbalance. The impact of different types of electrodes on mass sensitivity distribution is investigated through multi-physical coupling simulation, and the optimal proportion of finger and gap width is determined.
Article
Automation & Control Systems
Roberto Fernandez Molanes, Juan J. Rodriguez-Andina, Jose Farina
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2018)
Article
Engineering, Electrical & Electronic
L. Rodriguez-Pardo, A. M. Cao-Paz, J. Farina
SENSORS AND ACTUATORS A-PHYSICAL
(2018)
Article
Automation & Control Systems
Chengming Yang, Cesar Veiga, Juan J. Rodriguez-Andina, Jose Farina, Andres Iniguez, Shen Yin
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2019)
Article
Engineering, Electrical & Electronic
L. Rodriguez-Pardo, A. Cao-Paz, J. Farina
SENSORS AND ACTUATORS A-PHYSICAL
(2020)
Article
Automation & Control Systems
Roberto Fernandez Molanes, Lucia Costas, Juan J. Rodriguez-Andina, Jose Farina
Summary: Field-programmable system-on-chip (FPSoC) devices, which combine high-performance processors and FPGA fabric in the same chip, are leading technology in the design of complex digital systems. Efficient processor-FPGA communication remains an important open issue, and this article presents a detailed characterization of processor-FPGA communication delays in Zynq-7000 devices, considering all parameters that influence data transfer rates and comparing performance with Cyclone V devices.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2021)
Article
Chemistry, Analytical
Jose A. Gonzalez-Novoa, Laura Busto, Juan J. Rodriguez-Andina, Jose Farina, Marta Segura, Vanesa Gomez, Dolores Vila, Cesar Veiga
Summary: This paper introduces the use of explainable machine learning techniques for automated analysis of ICU patient data. The results show that the proposed model can effectively predict mortality rates for ICU patients in different age groups, and help improve alarm systems to enhance healthcare personnel's vigilance.
Article
Engineering, Electrical & Electronic
J. Costas-Costas, L. Rodriguez-Pardo, H. Perrot, A. Cao-Paz, J. Farina, D. Rose
Summary: This work implements a quartz resonator or QCM sensor system based on a phase detector circuit for measuring the properties of a liquid (density and viscosity). The system is calibrated with solutions of increasing viscosities to obtain the sensitivity equation and resolution of the output voltage. Results show comparability with previous works using oscillator circuits and a network analyzer as electronic measurement interfaces.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Analytical
Jose A. Gonzalez-Novoa, Laura Busto, Silvia Campanioni, Jose Farina, Juan J. Rodriguez-Andina, Dolores Vila, Cesar Veiga
Summary: Due to the high occupational pressure in ICUs, accurately estimating patients' length of stay (LoS) is crucial for predicting collapse situations, assisting healthcare personnel in treatment decisions, and predicting patient conditions. This study presents a novel methodology using XGBoost as an estimator model to estimate LoS using data from the first 24 hours in the ICU. The methodology is optimized using Bayesian techniques, and its execution time is significantly reduced by using a high-performance computing system. The proposed approach improves the state of the art results, demonstrating its validity and utility.
Proceedings Paper
Automation & Control Systems
J. Costas, L. Rodriguez-Pardo, A. Cao-Paz, J. Farina, H. Perrot, D. Rose
Summary: This work presents a QCM sensor system based on the phase shift detection method, specifically designed for liquid measurement applications. Experimental calibration of the system was conducted with solutions of increasing viscosities, resulting in the equation for the sensitivity of the output voltage to changes in the square root of the density-viscosity product of the liquid.
2021 JOINT CONFERENCE OF THE EUROPEAN FREQUENCY AND TIME FORUM AND IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM (IEEE EFTF-IFCS 2021)
(2021)
Article
Engineering, Electrical & Electronic
Camilo Quintans Grana, Maria Dolores Valdes Pena, Ana Maria Cao y Paz, Maria Jose Moure Rodriguez, Jorge Marcos Acevedo
Summary: In measurement systems, it is crucial to obtain both the calibration curve and its associated uncertainty for the entire operating range. Different methods should be considered based on the characteristics of the measurement and nature of the experiments. This study presents a step-by-step procedure to simultaneously obtain calibration and uncertainty curves, using MLE, WLS, and ISO-28037 recommendations, as demonstrated in the calibration of a U-Bent plastic optical fiber sensor measuring sucrose solution density related to RI.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Proceedings Paper
Engineering, Industrial
Ricardo Pardo, Carlos Gonzalez, Jose Farina, Maria D. Valdes, Juan J. Rodriguez-Andina, Manuel Portela
IECON 2017 - 43RD ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY
(2017)