ECS sensors plus最新文献_第7页

Detection of Methylparaben in Cosmetics by Poly L–Lysine/Reduced Graphene Oxide-Based Sensor 聚l -赖氨酸/还原氧化石墨烯传感器检测化妆品中对羟基苯甲酸甲酯

ECS sensors plus Pub Date : 2022-08-18 DOI: 10.1149/2754-2726/ac8aa7

D. Nguyen, Tran Thanh Tam Toan

引用次数: 8

Multimodal Single-Entity Electrochemical Fluoride Sensor for Fuel Cell Membrane Degradation Diagnostics 用于燃料电池膜降解诊断的多模态单实体电化学氟化物传感器

ECS sensors plus Pub Date : 2022-08-18 DOI: 10.1149/2754-2726/ac8aa8

R. López, Justin Fuentes, Adrian Gonzalez-Camps, T. Benhaddouch, A. Kaushik, Christopher Lloyd Metler, S. Bhansali, D. Dong

{"title":"Multimodal Single-Entity Electrochemical Fluoride Sensor for Fuel Cell Membrane Degradation Diagnostics","authors":"R. López, Justin Fuentes, Adrian Gonzalez-Camps, T. Benhaddouch, A. Kaushik, Christopher Lloyd Metler, S. Bhansali, D. Dong","doi":"10.1149/2754-2726/ac8aa8","DOIUrl":"https://doi.org/10.1149/2754-2726/ac8aa8","url":null,"abstract":"To the best of our knowledge, very few works have been done for the continuous real-time monitoring of Proton Exchange Membrane Fuel Cells (PEMFCs) membrane degradation based on fluoride-specific electrochemical microsensors. PEMFCs are eco-smart energy sources for efficient transportation but experience variable degradation rates that wear the Membrane Electrode Assembly (MEA), a critical component of the fuel cell’s functionality. Current market options lack specific diagnostics and a legitimate indication of when exactly the membrane needs to be replaced. As such, this work focused on manufacturing a sensor for measuring MEA degradation in real-time by selectively monitoring fluoride concentration in effluent water, a signature PEMFCs degradation status, through functionalized LaF3:(Au nanoparticle) thin films (∼60 nm). The sensor’s exceptional specificity/sensitivity has been achieved in real-time at a sub 10 ppb level, optimized through spin-coating deposition and post-annealing process. Its multimodal readout has been achieved and studied through the characterizations of open circuit potential, cyclic voltammetry, chronoamperometry, and differential pulse voltammetry revealing a consistent linear decrease of 15.7 mA cm−2 at 0 ppb to 10.2 mA cm−2, while also maintaining its low-cost, small size, and robustness.","PeriodicalId":72870,"journal":{"name":"ECS sensors plus","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43714808","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: 1

Proof Before Submission 提交前证明

ECS sensors plus Pub Date : 2022-08-16 DOI: 10.1149/2754-2726/ac865b

P. Cooper

引用次数: 0

Review—Electrochemical Sensors Used for the Determination of Some Antifungal Azoles 电化学传感器测定某些抗真菌唑类药物的研究进展

ECS sensors plus Pub Date : 2022-08-11 DOI: 10.1149/2754-2726/ac88e3

Bianca-Maria Ţuchiu, Raluca-Ioana Ștefan-van Staden, J. V. van Staden

引用次数: 2

Numerical Investigation on Photon Sensing Parameters for Some Thermoluminescence Dosimeters: A Comparative Study 几种热致发光剂量计光子传感参数的数值研究——比较研究

ECS sensors plus Pub Date : 2022-08-01 DOI: 10.1149/2754-2726/ac85ca

Harjot Kaur, Pardeep Kaur, Preet Kaur, T. Singh

{"title":"Numerical Investigation on Photon Sensing Parameters for Some Thermoluminescence Dosimeters: A Comparative Study","authors":"Harjot Kaur, Pardeep Kaur, Preet Kaur, T. Singh","doi":"10.1149/2754-2726/ac85ca","DOIUrl":"https://doi.org/10.1149/2754-2726/ac85ca","url":null,"abstract":"In the present work, twelve inorganic thermoluminescence dosimeteric (TLD) materials doped with some rare earth elements (LiF:Sm, LiBaP2O7:Eu, CaCO3:Eu, CaSO4:Dy, SrSO4:Sm, CdSO4:Dy, BaSO4:Eu, Li2B4O7:Dy, MgB4O7:Gd, Al2O3:Gd, MgAl2O4:Ce and LiCaAlF6:Eu) and three organic TLD materials (C3H7NO2, C7H8O2 and C4H6BaO4) were selected for comparative analysis on the basis of different photon sensing parameters. About nine photon sensing parameters viz. mass attenuation coefficient (MAC), linear attenuation coefficient (LAC), mean free path (mfp), half value layer (HVL), tenth value layer (TVL), effective atomic number (EAN), effective electron number (EEN), exposure buildup factor (EBF) and energy absorption buildup factor (EABF) were obtained for the selected fifteen TLDs. The simultaneous variation of these photon sensing parameters for the selected TLDs with photon energy and composition has been analyzed. The results of present comparative analysis help radiation physicists to easily select a particular dosimeter for their research laboratory from different existing compositions. All photon sensing parameters viz. MAC, LAC, mfp, HVL, TVL, EAN, EEN, EBF and EABF for selected TLDs strongly depend upon incident energy and chemical composition in lower and higher energy regions. Among the selected TLDs; BaSO4: Eu3+ offers best results (maximum values for MAC, EAN, EEN; and minimum values for mfp, HVL, TVL, EBF, EABF); whereas MgB4O7:Gd3+ offers EAN value close to tissue and less variation in most of the sensing parameters with respect to photon energy.","PeriodicalId":72870,"journal":{"name":"ECS sensors plus","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42053648","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: 1

Potentiometric Analysis of Benzalkonium Chloride with 3D Printed Ion-Selective Membranes 3D打印离子选择膜对苯扎氯铵的电位分析

ECS sensors plus Pub Date : 2022-07-26 DOI: 10.1149/2754-2726/ac8438

Nguyen H. B. Ho, Dalton L. Glasco, J. G. Bell

{"title":"Potentiometric Analysis of Benzalkonium Chloride with 3D Printed Ion-Selective Membranes","authors":"Nguyen H. B. Ho, Dalton L. Glasco, J. G. Bell","doi":"10.1149/2754-2726/ac8438","DOIUrl":"https://doi.org/10.1149/2754-2726/ac8438","url":null,"abstract":"Benzalkonium (BA+) chloride is one of the most common preservatives used in prescription-based and over-the-counter eye drops. Knowing the concentration of BA+ in eye drops is important for both quality control (at the pharmaceutical preparation stage) and human health (ocular toxicity has been linked to BA+ use). This paper describes the design and fabrication of a benzalkonium-selective potentiometric sensor for the determination of BA+ in ophthalmic solutions. The sensor is composed of a 3D-printed ion-selective membrane (ISM) that selectively measures BA+ in the presence of potentially interfering ions routinely found in ophthalmic formulations (i.e., Mg2+, Ca2+, Na+ and K+). The 3D printed BA+-ion-selective electrodes (ISEs) produced a Nernstian response of 55 mV/Decade across a range of 1.0 mM to 31.0 μM BA+ along with an LOD of 8 μM, which covers the relevant concentration range found in ophthalmic solutions. The 3D printed BA+-ISEs proved to be highly stable with an average drift of 205 μV/hr. Successful measurement of BA+ in diluted ophthalmic solutions was completed from 100–500 μM. The mass production capability afforded by 3D-printing offers a unique and intriguing fabrication protocol for developing low-cost sensors which could be incorporated quickly and seamlessly by pharmaceutical companies or community-based pharmacies.","PeriodicalId":72870,"journal":{"name":"ECS sensors plus","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45995267","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: 3

Review—A Nanomaterial-Based Sensor for Detecting the COVID-19 Virus through Various Techniques 基于纳米材料的新型冠状病毒检测技术综述

ECS sensors plus Pub Date : 2022-07-26 DOI: 10.1149/2754-2726/ac8436

Tran Thanh Tam Toan, D. Nguyen

引用次数: 6

MnO2-SnO2 Based Liquefied Petroleum Gas Sensing Device for Lowest Explosion Limit Gas Concentration 基于MnO2-SnO2的最低爆炸极限气体浓度液化石油气传感装置

ECS sensors plus Pub Date : 2022-07-26 DOI: 10.1149/2754-2726/ac8437

Ajeet Singh, A. Verma, B. Yadav

{"title":"MnO2-SnO2 Based Liquefied Petroleum Gas Sensing Device for Lowest Explosion Limit Gas Concentration","authors":"Ajeet Singh, A. Verma, B. Yadav","doi":"10.1149/2754-2726/ac8437","DOIUrl":"https://doi.org/10.1149/2754-2726/ac8437","url":null,"abstract":"In this work, MnO2-SnO2 nanocomposite based below lower exposure limit (0.5–2.0 vol%) sensing device for liquefied petroleum gas (LPG) is reported. The synthesized material is highly crystalline with an average crystallite size of 16.786 nm, confirmed by the X-ray diffraction pattern. Williamson-Hall plot shows that the induced strain of 2.627 × 10−4, present in the nanocomposite, lies between the induced strains of both of its constituents. The XRD pattern of nanocomposite contains the cubic phase of MnO2 and the tetragonal phase of SnO2. Tauc plot shows the optical energy band gap of MnO2, SnO2, and MnO2-SnO2 of 3.407 eV, 3.037 eV, and 3.202 eV respectively. The surface morphological investigation shows the brush-like structure which enhances sensor performance by providing activation sites. The energy dispersive X-ray (EDS) spectrum found that materials are highly pure because other peaks are not observed. The functional group analysis by using FTIR found to be Sn–O and Mn–O both vibration bands existed. The highest sensor response was found to be 2.42 for 2.0 vol% whereas for a lower concentration of 0.5 vol% the sensor response was observed to be 1.44. The fast response and recovery of this sensing device were found to17.30 and 23.25 s respectively for 0.5 vol% of LPG.","PeriodicalId":72870,"journal":{"name":"ECS sensors plus","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47325752","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: 17

Passive Sweat-Based Pruritic Cytokine Detection and Monitoring System 基于被动汗液的瘙痒细胞因子检测与监测系统

ECS sensors plus Pub Date : 2022-07-20 DOI: 10.1149/2754-2726/ac82bc

Sayali Upasham, Paul Rice, Sarah Shahub, V. N. Dhamu, Shalini Prasad

引用次数: 3

Identifying Hypocalcemia in Dairy Cattle by Combining 3D Printing and Paper Diagnostics 3D打印与纸质诊断相结合识别奶牛低钙血症

ECS sensors plus Pub Date : 2022-07-07 DOI: 10.1149/2754-2726/aca034

Art Matthew Mamaril, Dalton L. Glasco, F. L. Leal Yepes, J. G. Bell

{"title":"Identifying Hypocalcemia in Dairy Cattle by Combining 3D Printing and Paper Diagnostics","authors":"Art Matthew Mamaril, Dalton L. Glasco, F. L. Leal Yepes, J. G. Bell","doi":"10.1149/2754-2726/aca034","DOIUrl":"https://doi.org/10.1149/2754-2726/aca034","url":null,"abstract":"This paper describes the design, fabrication, and validation of a paper-based diagnostic device for the rapid diagnosis of hypocalcemia in dairy cattle at the point-of-care (POC). The device incorporates a 3D printed calcium ion-selective membrane (ISM) as the sensing element for free—unbound—calcium in real bovine whole blood samples. With a linear response range of 100 mM to 97.7 μM, the sensor covers the clinically relevant concentrations of Ca2+ associated with both healthy cattle as well as those suffering from hypocalcemia. The components of the Ca2+ ion-selective electrodes were successfully translated to a paper-based device to provide a sensing platform that is simple to use, disposable, and low-cost, and is therefore well-situated for applications at the POC. The paper-based calcium sensor showed a Nernstian response between 10 mM and 100 μM and required only 12 μl of sample to perform a measurement, which can be accomplished in less than two minutes without the need for time-consuming separation steps. The performance of the paper-based Ca2+ sensor was validated using the commercially available epoc® Blood Analysis System, which provided results within 5% of the data obtained with 3D printed Ca2+-ISM integrated paper-based device.","PeriodicalId":72870,"journal":{"name":"ECS sensors plus","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41892338","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: 1