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2021 International Workshop on Impedance Spectroscopy (IWIS)最新文献

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Hand Gesture Recognition based on Electrical Impedance Tomography Measurements using Genetic Algorithms 基于遗传算法的电阻抗断层扫描测量手势识别
2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711814
Mariem Hafsa, B. B. Atitallah, Taha ben Salah, N. B. Ben Amara, O. Kanoun
{"title":"Hand Gesture Recognition based on Electrical Impedance Tomography Measurements using Genetic Algorithms","authors":"Mariem Hafsa, B. B. Atitallah, Taha ben Salah, N. B. Ben Amara, O. Kanoun","doi":"10.1109/IWIS54661.2021.9711814","DOIUrl":"https://doi.org/10.1109/IWIS54661.2021.9711814","url":null,"abstract":"Electrical Impedance Tomography (EIT) for gesture recognition is on the rise in the bio-medical field. It is an imaging technique based on a set of electrodes which are placed on the forearm of the individual. The inner conductivity distribution inside the forearm will be calculated based on measured boundary voltages resulting of the injected excitation signal. In this work, the Genetic Algorithm, using the Non-Blind Search has been developed as a solution for the EIT Inverse Problem. Therefore, several measurements have been conducted for American sign numbers (0-9) for gesture recognition applications. The reconstructed images were used in a Convolutional Neural Network (CNN) classification algorithm for gesture recognition. The overall accuracy achieved for image recognition was 93%.","PeriodicalId":207918,"journal":{"name":"2021 International Workshop on Impedance Spectroscopy (IWIS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128138434","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
Copper-Free Click Chemistry Assisted Antibodies Immobilization for Immunosensing Of IL-10 Cytokine 无铜点击化学辅助抗体固定化IL-10细胞因子的免疫传感
2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711762
Nazha Hilali, Musbahu Aminu Abdullahi, F. Bellagambi, Marie Hangouër, A. Elaissari, Nicole Jaffrezic-Renult, J. Bausells, H. Mohammadi, A. Amine, N. Zine, A. Errachid
{"title":"Copper-Free Click Chemistry Assisted Antibodies Immobilization for Immunosensing Of IL-10 Cytokine","authors":"Nazha Hilali, Musbahu Aminu Abdullahi, F. Bellagambi, Marie Hangouër, A. Elaissari, Nicole Jaffrezic-Renult, J. Bausells, H. Mohammadi, A. Amine, N. Zine, A. Errachid","doi":"10.1109/IWIS54661.2021.9711762","DOIUrl":"https://doi.org/10.1109/IWIS54661.2021.9711762","url":null,"abstract":"Copper-free variant of click chemistry has been successfully implemented to develop a new electrochemical immunosensor for cytokine interleukin-10 (IL-10) detection in saliva for heart failure (HF) monitoring. The approach involved the binding of dibenzocyclooctyne-amine (DBCO-NH2) onto the azide-thiol modified gold microelectrodes. The use of dibenzocyclooctynes decreased the activation energy for the cycloaddition click reaction, enabling its realization without the need for copper catalysis and with an efficiency greater than that of the copper catalysed ligation. Then, the biofunctionalization was performed through incubating the prepared sensor in the capture antibody of IL-10 (Anti-IL-10). The conjugation was formed via carbodiimide cross-linking and cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques were used for characterizing step-by-step the modification of the gold microelectrode.","PeriodicalId":207918,"journal":{"name":"2021 International Workshop on Impedance Spectroscopy (IWIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131066363","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
Forward Modelling of the Human Thorax for Electrical Impedance Tomography Measurements 电阻抗断层扫描测量的人体胸腔正演模型
2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711884
Hamdi Haddad, Oumaima Bader, Mariem Hafsa, N. B. Ben Amara, O. Kanoun
{"title":"Forward Modelling of the Human Thorax for Electrical Impedance Tomography Measurements","authors":"Hamdi Haddad, Oumaima Bader, Mariem Hafsa, N. B. Ben Amara, O. Kanoun","doi":"10.1109/IWIS54661.2021.9711884","DOIUrl":"https://doi.org/10.1109/IWIS54661.2021.9711884","url":null,"abstract":"Electrical Impedance Tomography (EIT) is a medical imaging technique that reflects the inner conductivity distribution of biological tissue based on boundary voltages measured at the electrodes around the thorax while injecting an alternating current with a low amplitude. In this work, a 16-electrode thorax mesh is implemented for the pyEIT library. This mesh builds the basis for the reconstruction of the conductivity distributions from real human thorax voltage measurements. Post-processing techniques, such as the K-means method and the region based segmentation, have also been implemented. The resulting re-constructed images reflect the conductivity changes during the breathing cycle and by post-processing artifacts are eliminated leading to a clear image of the lungs and the heart.","PeriodicalId":207918,"journal":{"name":"2021 International Workshop on Impedance Spectroscopy (IWIS)","volume":"77 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131424707","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
Using Electrochemical Impedance Spectroscopy to Study the in vivo Evolution of the Electrochemical Properties of Neural Implants 利用电化学阻抗谱研究神经植入物电化学性能的体内演变
2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-09-29 DOI: 10.1109/IWIS54661.2021.9711822
Valentin Hélias, Julie Zhang, S. Picaud, J. Dégardin, P. Poulichet, L. Rousseau, O. Français
{"title":"Using Electrochemical Impedance Spectroscopy to Study the in vivo Evolution of the Electrochemical Properties of Neural Implants","authors":"Valentin Hélias, Julie Zhang, S. Picaud, J. Dégardin, P. Poulichet, L. Rousseau, O. Français","doi":"10.1109/IWIS54661.2021.9711822","DOIUrl":"https://doi.org/10.1109/IWIS54661.2021.9711822","url":null,"abstract":"Electrochemical impedance spectroscopy (EIS) is widely used in biomedical technology, for instance to monitor the body composition of patients or for the electrochemical characterization Brain-Computer Interfaces (BCI). When a neural implant is placed within a body, its EIS is modified by the interaction of the material with cells and by action of the biological tissue itself. Classical impedance meters are not practical for measurements on animal models and hence not suited for the in vivo follow-up of such BCI. The present study describes a portable device based on homemade electronic shields compatible with classical microcontrollers that can measure the EIS. EIS measurements concerning a subretinal diamond implant inserted chronically in the eye of a wild-type rat eye are performed with this custom impedance meter and presented here. This low-cost on-board wireless impedance meter can be used for a large range of applications.","PeriodicalId":207918,"journal":{"name":"2021 International Workshop on Impedance Spectroscopy (IWIS)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129103686","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
Dielectric Relaxation of Iron Corrosion Products in Limestone under Saline Environment 盐碱环境下石灰岩铁腐蚀产物的介电弛豫
2021 International Workshop on Impedance Spectroscopy (IWIS) Pub Date : 2021-08-29 DOI: 10.3997/2214-4609.202120047
Benhui Fan, D. Souriou, F. Bosc, D. Guilbert, Sima Kadkhodazadeh, A. Ihamouten, X. Dérobert, C. Fauchard
{"title":"Dielectric Relaxation of Iron Corrosion Products in Limestone under Saline Environment","authors":"Benhui Fan, D. Souriou, F. Bosc, D. Guilbert, Sima Kadkhodazadeh, A. Ihamouten, X. Dérobert, C. Fauchard","doi":"10.3997/2214-4609.202120047","DOIUrl":"https://doi.org/10.3997/2214-4609.202120047","url":null,"abstract":"Limestone is selected as test material to study the influence of corrosion on dielectric relaxations because of its high porosity (40-50%) that quickens the observation of the corrosion diffusion. The corrosion process is launched by an iron plate on the surface of the limestone imbibed in the brine. The complex dielectric properties from 50 MHz to 1.5 GHz have been measured since most ground penetrating radar (GPR) applications cover this frequency band. To analyse the dielectric relaxation associated with the corrosion products (mainly Fe rust, mixture of hematite and magnetite), the dielectric modulus has been used as a tool to suppress the influence of an apparent direct current conductivity ($sigma_{dc}$) brought by the imbibition in the brine. By finding out the feature relaxation peak of the Fe rust at a certain frequency, the content of Fe rust in the limestone can be estimated by the application of the complex refractive index model (CRIM). We hope that this study on the dielectric relaxation of Fe rust in limestone under saline environment can serve as a model which can eventually adapt for concrete structures in our future works.","PeriodicalId":207918,"journal":{"name":"2021 International Workshop on Impedance Spectroscopy (IWIS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121215935","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
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