Sensors International最新文献_第7页

A smart glove to evaluate Parkinson's disease by flexible piezoelectric and inertial sensors 一种用柔性压电和惯性传感器评估帕金森病的智能手套

Sensors International Pub Date : 2025-01-01 Epub Date: 2024-12-18 DOI: 10.1016/j.sintl.2024.100324

R. De Fazio , C. Del-Valle-Soto , V.M. Mastronardi , M. De Vittorio , P. Visconti

{"title":"A smart glove to evaluate Parkinson's disease by flexible piezoelectric and inertial sensors","authors":"R. De Fazio , C. Del-Valle-Soto , V.M. Mastronardi , M. De Vittorio , P. Visconti","doi":"10.1016/j.sintl.2024.100324","DOIUrl":"10.1016/j.sintl.2024.100324","url":null,"abstract":"<div><div>Parkinson's disease (PD), to date, is widespread. It is a neurodegenerative disease that impairs the quality of life of the affected, as it is a slowly but progressively evolving disease. This paper presents a smart glove for evaluating PD patients by monitoring hand tremors and evaluating specific exercises involved by the MDS-UPDRS (Movement Disorder Society - Unified Parkinson Disease Rating Scale), enabling disease evolution assessment. The smart glove consists of a TPU flexible support, integrating two flexible MEMS piezoelectric sensors based on Aluminum Nitride and an inertial sensor to detect finger and arm movements. The smart glove integrates an electronic conditioning section for piezoelectric signals to make them suitable for the following acquisition by a microcontroller section based on nRF52840 SoC, which jointly processes the piezoelectric and inertial signals related to standard patient's hand and arm exercises (i.e., finger tapping, fist opening/closing of the hand, resting hand tremor), assigning them scores according to the MDS-UPDRS. Three embedded Machine Learning (ML) algorithms based on Neural Networks (NN) were deployed to classify piezoelectric and inertial signals. Seven individuals, six of them with diagnosed PD, were involved in developing ML models. Datasets were gathered to train and test the ML algorithms, constituted by signal samples related to three tests involved in the UPDRS scale according to PD severity. The tests demonstrated the proper operation of the proposed smart glove in tracking the movement changes induced by PD; also, the developed embedded ML algorithms showed performance in classifying hand/arm movements, reaching 95.12 %, 98.39 %, and 96.62 % for finger-tapping, hand-fist closure, and resting tremor, respectively.</div></div>","PeriodicalId":21733,"journal":{"name":"Sensors International","volume":"6 ","pages":"Article 100324"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Privacy-concerned averaged human activeness monitoring and normal pattern recognizing with single passive infrared sensor using one-dimensional modeling 利用单个被动红外传感器，通过一维建模实现对人类活动性的平均监测和正常模式识别，兼顾隐私问题

Sensors International Pub Date : 2025-01-01 Epub Date: 2024-09-28 DOI: 10.1016/j.sintl.2024.100303

Tajim Md. Niamat Ullah Akhund, Kenbu Teramoto

{"title":"Privacy-concerned averaged human activeness monitoring and normal pattern recognizing with single passive infrared sensor using one-dimensional modeling","authors":"Tajim Md. Niamat Ullah Akhund, Kenbu Teramoto","doi":"10.1016/j.sintl.2024.100303","DOIUrl":"10.1016/j.sintl.2024.100303","url":null,"abstract":"<div><div>Detecting human activity through cameras and machine learning methods raises significant privacy concerns, while alternatives like thermal cameras can be expensive. Passive infrared (PIR) sensors present a cost-effective and privacy-preserving solution, commonly used in home settings for motion detection. This study introduces a system for monitoring human activeness using a single PIR sensor, focusing on privacy preservation. The proposed one-dimensional model, based on the Laplace distribution, emphasizes the role of the parameter <span><math><mi>μ</mi></math></span> in defining velocity distributions. Through real-world experiments with a Raspberry Pi and PIR sensor, the effectiveness of the model in capturing human activeness is validated. The study investigates how different <span><math><mi>μ</mi></math></span> values correlate with activity levels and detect abnormalities. Additionally, the paper addresses the stochastic nature of human behavior, and the impact of <span><math><mi>μ</mi></math></span> on predictability and variability, and provides insights into detection thresholds and interval times. The findings highlight the potential for enhancing abnormality detection and suggest a comprehensive understanding of human activeness.</div></div>","PeriodicalId":21733,"journal":{"name":"Sensors International","volume":"6 ","pages":"Article 100303"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The application of ultrasonic measurement and machine learning technique to identify flow regime in a bubble column reactor 应用超声波测量和机器学习技术识别气泡塔反应器中的流动状态

Sensors International Pub Date : 2025-01-01 Epub Date: 2024-09-05 DOI: 10.1016/j.sintl.2024.100294

Wongsakorn Wongsaroj , Natee Thong-Un , Jirayut Hansot , Naruki Shoji , Weerachon Treenuson , Hiroshige Kikura

{"title":"The application of ultrasonic measurement and machine learning technique to identify flow regime in a bubble column reactor","authors":"Wongsakorn Wongsaroj , Natee Thong-Un , Jirayut Hansot , Naruki Shoji , Weerachon Treenuson , Hiroshige Kikura","doi":"10.1016/j.sintl.2024.100294","DOIUrl":"10.1016/j.sintl.2024.100294","url":null,"abstract":"<div><p>This paper presents a novel technique to classify the flow regimes in bubble columns. The ultrasonic velocity profiler is employed to detect the velocity deviation and echo characteristic of bubbles rising in the column. This information is set as attribute data for the machine learning algorithm. Classification-based machine learning is utilized to classify the flow regimes: bubbly, transition, and churn turbulent, which are defined as categories of the algorithm. Several classifiers were applied in this work, such as K-nearest neighbors, Decision tree, Support vector machines, Naive bayes, and Logical regression. The experimental demonstration was conducted to verify the performance of the proposed technique. Three kinds of two-phase flow with stagnant liquid that had various viscosities were used for the experiment. The air within the superficial velocity range was injected to alter the flow regime. The flow regime classification model was set. The proposed method was applicable to identify the flow regimes. The classifiers were tested, and their accuracy was evaluated.</p></div>","PeriodicalId":21733,"journal":{"name":"Sensors International","volume":"6 ","pages":"Article 100294"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666351124000160/pdfft?md5=9d84de0129f6d8575eb79192d50010b6&pid=1-s2.0-S2666351124000160-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication, catalytic activity, metal sensing ability and electrochemical evaluation of nano silver particles for supercapacitor applications 用于超级电容器的纳米银颗粒的制备、催化活性、金属感应能力和电化学评价

Sensors International Pub Date : 2025-01-01 Epub Date: 2024-09-02 DOI: 10.1016/j.sintl.2024.100298

Anindita De , Pawan Singh Dhapola , Preeti Jain , Anjali Kathait , Misbah Shahid , Eliho Votsa , Markus Diantoro , Serguei V. Savilov

{"title":"Fabrication, catalytic activity, metal sensing ability and electrochemical evaluation of nano silver particles for supercapacitor applications","authors":"Anindita De , Pawan Singh Dhapola , Preeti Jain , Anjali Kathait , Misbah Shahid , Eliho Votsa , Markus Diantoro , Serguei V. Savilov","doi":"10.1016/j.sintl.2024.100298","DOIUrl":"10.1016/j.sintl.2024.100298","url":null,"abstract":"<div><p>In this work, stable, spherical silver nanoparticles (MAgNp) were prepared via a green synthesis method using flowers of Myristica fragrans (nutmeg). This flower is abundant in phytochemicals such as saponins that can be utilized as reductants to produce silver nanoparticles. The synthesized nanoparticles were examined using a variety of physico-chemical methods, including transmission electron microscopy (TEM), Dynamic light scattering (DLS), elemental dispersive X-ray spectroscopy (EDX), powder X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and UV–VIS spectrometer. EDX study confirmed the crystalline and face-centered cubic (FCC) structure of AgNP. The majority of particles are present with a higher percentage intensity at an average size of 58.77 nm as revealed in the TEM image, PDI was found to be 0.055. MAgNPs demonstrated perfect activity in the catalytic degradation of methylene blue dye (88 %) and para-nitrophenol (98 %), both anthropogenic pollutants. These nanoparticles were further used as plasmonic sensors to detect heavy metals like Fe(II) and Hg(II) in an aqueous solution. The minimum detection limit was found to be 0.2 mM for Hg(II) and 10 μM for Fe(II) with good linearity. The electrochemical properties of MAgNPs were studied using a carbon supercapacitor electrode coated with MAgNPs. Results from cyclic voltammetry were also determined, and they showed a high specific capacitance of 41 F/gm at 5 mV/s scan rate.</p></div>","PeriodicalId":21733,"journal":{"name":"Sensors International","volume":"6 ","pages":"Article 100298"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666351124000202/pdfft?md5=227c07a67bdb3411c5e8c034606070b6&pid=1-s2.0-S2666351124000202-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142167777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

GaN Nanopowder synthesis via nitridation: Fabrication and characterization of GaN thin Films for UV detection applications 氮化法合成氮化镓纳米粉末：用于紫外检测的氮化镓薄膜的制备和表征

Sensors International Pub Date : 2025-01-01 Epub Date: 2025-01-18 DOI: 10.1016/j.sintl.2025.100329

Mahdi Hajimazdarani , Peyman Yaghoubizadeh , Ali Jafari , Ali Kenarsari Moghadam , Mojtaba Hajimazdarani , Mohammad Javad Eshraghi

{"title":"GaN Nanopowder synthesis via nitridation: Fabrication and characterization of GaN thin Films for UV detection applications","authors":"Mahdi Hajimazdarani , Peyman Yaghoubizadeh , Ali Jafari , Ali Kenarsari Moghadam , Mojtaba Hajimazdarani , Mohammad Javad Eshraghi","doi":"10.1016/j.sintl.2025.100329","DOIUrl":"10.1016/j.sintl.2025.100329","url":null,"abstract":"<div><div>This study presents a novel method for synthesizing gallium nitride nanoparticles via nitridation and their subsequent deposition onto silicon substrates using electron beam evaporation for UV detection applications. The structural and optical properties of the resulting gallium nitride thin films were thoroughly characterized. X-ray diffraction confirmed that the synthesized powder has a wurtzite crystal structure, while the deposited thin film has an amorphous structure. Field emission scanning electron microscopy revealed a uniform layer with an approximate thickness of 150 nm. Energy dispersive spectroscopy confirmed that the stoichiometric ratio of gallium to nitrogen was maintained throughout the coating process. Additionally, ultraviolet diffuse reflectance spectroscopy measurements revealed a bandgap of 3.37 eV for the deposited thin film. Additionally, gold electrodes were deposited on the gallium nitride thin film, and the optical sensor's detection properties were evaluated, demonstrating a sensitivity of 133.6 along with rise and fall times of 18 ms and 15 ms, respectively. These findings underscore the potential of gallium nitride-based materials for advanced optical sensor applications in various fields.</div></div>","PeriodicalId":21733,"journal":{"name":"Sensors International","volume":"6 ","pages":"Article 100329"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PCR-free and minute-scale electrochemical analysis of porcine DNA adulteration via molecularly amplified DNA sandwich assay 通过分子扩增 DNA 夹心测定法对猪 DNA 掺假进行无 PCR 和微量电化学分析

Sensors International Pub Date : 2025-01-01 Epub Date: 2024-09-04 DOI: 10.1016/j.sintl.2024.100299

Vasita Lapee-e , Suphachai Nuanualsuwan , Sudkate Chaiyo , Abdulhadee Yakoh

{"title":"PCR-free and minute-scale electrochemical analysis of porcine DNA adulteration via molecularly amplified DNA sandwich assay","authors":"Vasita Lapee-e , Suphachai Nuanualsuwan , Sudkate Chaiyo , Abdulhadee Yakoh","doi":"10.1016/j.sintl.2024.100299","DOIUrl":"10.1016/j.sintl.2024.100299","url":null,"abstract":"<div><p>The increasing incidence of meat adulteration and mislabeling poses significant challenges in terms of food safety and consumer trust. This study proposes an electrochemical DNA biosensor for detecting porcine mitochondrial DNA in tainted meat products, offering a novel approach to address the above challenges. Unlike conventional nucleic acid amplification tests that rely on polymerase chain reactions (PCRs), the proposed biosensor employs a molecularly amplified DNA strategy with DNA tracers that bind to two regions of the target DNA, creating an elongated hybridization structure with multiple redox-tagging molecules. This design catalyzes detection signals autonomously, eliminating the need for PCR amplification. One-step DNA probe immobilization using poly-adenine (poly-A) oligonucleotides significantly improves hybridization efficiency and reduces the necessity for extensive sample purification, thereby simplifying the detection process. The proposed biosensor exhibits a linear detection range of 10<sup>1</sup>–10<sup>6</sup> pM and a limit of detection (LOD) of 2.2 pM in controlled settings. Furthermore, the proposed biosensor distinguishes pork from beef in adulterated samples with a LOD of 1 % w/w. With its stability exceeding 9 weeks and a cost of less than 0.5 USD per test, the proposed biosensor offers a highly sensitive, economically viable solution with significant potential for widespread use in the meat industry and by end-users, effectively combating porcine adulteration.</p></div>","PeriodicalId":21733,"journal":{"name":"Sensors International","volume":"6 ","pages":"Article 100299"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666351124000214/pdfft?md5=868fc1769960450c6e946164df78a50f&pid=1-s2.0-S2666351124000214-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142167658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular engineering of a fluorescent probe for highly efficient detection of human serum albumin in biological fluid 用于高效检测生物液体中人血清白蛋白的荧光探针的分子工程学研究

Sensors International Pub Date : 2025-01-01 Epub Date: 2024-10-15 DOI: 10.1016/j.sintl.2024.100304

Raja Chinnappan , Tanveer Ahmad Mir , Shanmugam Easwaramoorthi , Gopika Sunil , Ancy Feba , Balamurugan Kanagasabai , Shadil Ibrahim Wani , Maram N. Sandouka , Alaa Alzhrani , Sandhanasamy Devanesan , Mohamad S. AlSalhi , Naresh Kumar Mani , Wael Al-Kattan , Ahmed Yaqinuddin , Abdullah M. Assiri , Dieter C. Broering

{"title":"Molecular engineering of a fluorescent probe for highly efficient detection of human serum albumin in biological fluid","authors":"Raja Chinnappan , Tanveer Ahmad Mir , Shanmugam Easwaramoorthi , Gopika Sunil , Ancy Feba , Balamurugan Kanagasabai , Shadil Ibrahim Wani , Maram N. Sandouka , Alaa Alzhrani , Sandhanasamy Devanesan , Mohamad S. AlSalhi , Naresh Kumar Mani , Wael Al-Kattan , Ahmed Yaqinuddin , Abdullah M. Assiri , Dieter C. Broering","doi":"10.1016/j.sintl.2024.100304","DOIUrl":"10.1016/j.sintl.2024.100304","url":null,"abstract":"<div><div>Human serum albumin (HSA) is synthesized by the liver, accounting for 60 % of total plasma protein in vertebrates' blood. It is the most predominant extracellular plasma protein that acts as a repository and transporter of exogenous and endogenous substances in the blood of healthy humans. Decreased albumin concentration in the human body or its abnormal levels indicate the occurrence of hepatic, renal, and digestive-related diseases. Therefore, accurate quantification of HSA is of great significance in diagnostic testing and routine clinical analysis of albumin-linked diseases. Herein, a class of triphenylamine rhodanine-3-acetic acid (mRA)-a bifunctional fluorescent molecule with twisted intramolecular charge transfer (TICT)-induced emission characteristics is synthesized and employed as a novel sensing probe for the fluorescent detection of human albumin. mRA can be selectively lighted up through site-specific interactions with serum albumin-binding moieties and show enhanced photophysical or biological response efficacy. Understanding the interaction of mRA with HSA at the molecular level was carried out using docking methodology to explore the site-specific interaction phenomenon. The resulting fluorescence strategy produced a dose-dependent signal response enhancement upon interaction with HSA in the concentration range of 0.01–400 μg/ml. The sensor probe exhibits a low detection limit of 10 ng/mL and is found to be a feasible, low-cost, and effective approach for HSA analysis in complex biological fluids for early detection and diagnosis of albumin-related diseases.</div></div>","PeriodicalId":21733,"journal":{"name":"Sensors International","volume":"6 ","pages":"Article 100304"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A dual sensing probe for Cd2+ and Zn2+ detection in water based on tautomerization of acetamidoquinoline containing dipicolylamine and its application in water samples and cell imaging 基于二聚胺乙酰氨基喹啉互变异构的水中Cd2+和Zn2+双传感探针及其在水样和细胞成像中的应用

Sensors International Pub Date : 2025-01-01 Epub Date: 2025-04-23 DOI: 10.1016/j.sintl.2025.100336

Waroton Paisuwan , Takuya Kodama , Tanapat Palaga , Thitiporn Pattarakankul , Mongkol Sukwattanasinitt , Nantanat Chailanggar , Mamoru Tobisu , Anawat Ajavakom

{"title":"A dual sensing probe for Cd2+ and Zn2+ detection in water based on tautomerization of acetamidoquinoline containing dipicolylamine and its application in water samples and cell imaging","authors":"Waroton Paisuwan , Takuya Kodama , Tanapat Palaga , Thitiporn Pattarakankul , Mongkol Sukwattanasinitt , Nantanat Chailanggar , Mamoru Tobisu , Anawat Ajavakom","doi":"10.1016/j.sintl.2025.100336","DOIUrl":"10.1016/j.sintl.2025.100336","url":null,"abstract":"<div><div>Two novel fluorescent probes (<strong>2QAD</strong> and <strong>6QAD</strong>) for metal ion detection were designed and synthesized based on acetamidoquinoline derivatives containing dipicolylamine unit. <strong>2QAD</strong> distinctively exhibits fluorescence enhancement with Cd<sup>2+</sup> and Zn<sup>2+</sup> in aqueous media at different emission wavelengths of 350 and 380 nm, respectively. The fluorescence enhancement of <strong>2QAD</strong> involves inhibiting the PET process from the dipicolylamine group to the quinoline ring by the corresponding 1:1 complexation with each metal ion. The reversibility of complexes when adding EDTA indicates the static fluorescence-enhancing mechanism. The distinguished fluorescence responses result from amide-imidic tautomerization of <strong>2QAD</strong> induced by the complexation with different metal ions, confirmed by <sup>1</sup>H NMR. From the results of fluorescence titration, the LOD values for Cd<sup>2+</sup> and Zn<sup>2+</sup> were calculated to be 17 and 8.5 ppb, respectively, with a good linear range. Furthermore, the <strong>2QAD</strong> probe can be employed to determine the amount of Cd<sup>2+</sup> and Zn<sup>2+</sup> in real water samples and can also be applied to macrophage cell RAW264.7.</div></div>","PeriodicalId":21733,"journal":{"name":"Sensors International","volume":"6 ","pages":"Article 100336"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancing point-of-care testing with nanomaterials-based screen-printing electrodes 推进基于纳米材料的丝网印刷电极的即时检测

Sensors International Pub Date : 2025-01-01 Epub Date: 2025-01-22 DOI: 10.1016/j.sintl.2025.100328

Sophia Nazir

{"title":"Advancing point-of-care testing with nanomaterials-based screen-printing electrodes","authors":"Sophia Nazir","doi":"10.1016/j.sintl.2025.100328","DOIUrl":"10.1016/j.sintl.2025.100328","url":null,"abstract":"<div><div>Although numerous studies have been conducted on multiple screen-printing electrodes (SPEs), little emphasis has been placed on systematically assessing scholarly work on nanomaterial-equipped SPEs in bioanalytical research. The fabrication of state-of-the-art portable screen-printing measuring devices represents significant disease monitoring and diagnosis advancements. This review classifies screen-printing electrodes based on the nanomaterials used. It discusses cost, regulatory approvals for portable screen-printing electrodes in point-of-care diagnostics, sensitivity, specificity, size reductions, and proposed solutions. It looks into the significance of new nanomaterials and substrates in fabricating point-of-care diagnostic devices and miniaturisation techniques. The review primarily focuses on the recent downsizing advances that have resulted in a growing number of portable screen-printing electrodes for quick point-of-care diagnostics. Special attention is given to identifying different bioanalytics associated with distinct medical problems. Screen-printing biosensors potentially transform healthcare by allowing for rapid, accurate, and individualised diagnosis. These biosensors improve disease management, medical outcomes, and global diagnostic accessibility as technology advances.</div></div>","PeriodicalId":21733,"journal":{"name":"Sensors International","volume":"6 ","pages":"Article 100328"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of a high accuracy wideband current sensing system by tunneling magnetoresistive device with digital parametric equalizer 带数字参数均衡器的隧道磁阻式高精度宽带电流传感系统的设计

Sensors International Pub Date : 2025-01-01 Epub Date: 2024-11-26 DOI: 10.1016/j.sintl.2024.100311

Sen Qian , Hui Huang , Fuchao Li , Qiang Shi , Xiaohui Yan , Jinghong Guo

{"title":"Design of a high accuracy wideband current sensing system by tunneling magnetoresistive device with digital parametric equalizer","authors":"Sen Qian , Hui Huang , Fuchao Li , Qiang Shi , Xiaohui Yan , Jinghong Guo","doi":"10.1016/j.sintl.2024.100311","DOIUrl":"10.1016/j.sintl.2024.100311","url":null,"abstract":"<div><div>Wideband current sensors play a crucial role in the future power grid, especially with the increasing integration of renewable energy and nonlinear loads. This research developed a sensor configuration using tunneling magnetoresistive (TMR) devices for wideband current measurement. A parametric equalizer was also introduced to compensate for minor fluctuations in the TMR sensor's frequency response, thereby reducing wideband measurement errors. A calibration setup was created to test the frequency-dependent accuracy of the compensated TMR sensor. Results showed that relative errors in wideband measurements were reduced to 2 % after compensation, compared to 6 % of the uncompensated results, with power frequency measurement errors falling below 1 %. Furthermore, the designed TMR sensors were deployed in a 0.4 kV household district, demonstrating their practical application in diagnosing the spectral content of the load current. The analysis revealed a range of wideband components, including low-frequency components below 50 Hz, intermediate harmonics, and supraharmonics.</div></div>","PeriodicalId":21733,"journal":{"name":"Sensors International","volume":"6 ","pages":"Article 100311"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0