2021 IEEE International Flexible Electronics Technology Conference (IFETC)最新文献_第3页

An additively manufactured pressure measurement system based on optical sensors 一种基于光学传感器的增材制造压力测量系统

2021 IEEE International Flexible Electronics Technology Conference (IFETC) Pub Date : 2021-08-08 DOI: 10.1109/IFETC49530.2021.9580523

Jeremy L. Siegfried, E. MacDonald, F. Ahmadi

引用次数: 0

Solution processable GHz silicon Schottky diodes 溶液可处理GHz硅肖特基二极管

2021 IEEE International Flexible Electronics Technology Conference (IFETC) Pub Date : 2021-08-08 DOI: 10.1109/IFETC49530.2021.9580525

L. Kuhnel, K. Neumann, F. Langer, D. Erni, R. Schmechel, N. Benson

引用次数: 0

Thermal Stability of Flexible IGZO/Ag Schottky Diodes on Cellulose Microfiber Paper Substrate 纤维素微纤维纸衬底上柔性IGZO/Ag肖特基二极管的热稳定性

2021 IEEE International Flexible Electronics Technology Conference (IFETC) Pub Date : 2021-08-08 DOI: 10.1109/IFETC49530.2021.9580504

S. Vasquez, Mukhtar Ahmad, M. Petrelli, M. C. Angeli, R. Riaz, Ali Douaki, G. Cantarella, N. Münzenrieder, P. Lugli, L. Petti

{"title":"Thermal Stability of Flexible IGZO/Ag Schottky Diodes on Cellulose Microfiber Paper Substrate","authors":"S. Vasquez, Mukhtar Ahmad, M. Petrelli, M. C. Angeli, R. Riaz, Ali Douaki, G. Cantarella, N. Münzenrieder, P. Lugli, L. Petti","doi":"10.1109/IFETC49530.2021.9580504","DOIUrl":"https://doi.org/10.1109/IFETC49530.2021.9580504","url":null,"abstract":"In this work, Schottky diodes based on amorphous indium-gallium-zinc-oxide (IGZO) were fabricated on cellulose microfiber paper substrate. Silver lines used as the Schottky barrier were printed, in parallel to thermally evaporated Cr/Au ohmic contact, using a dispense printer. The morphological and electrical characteristics of the devices are presented. The fabricated diodes exhibited rectification ratios ranging from 3.4 to 34.9 at ±1V with ON voltages that range from 1.1V to 1.4 V, for device lengths (Ag to Au distance) from 145 µm to 894 µm. The diodes were characterized in a temperature range between 25°C and 80°C. They showed a decrease of the ON current when increasing temperature, which is mainly attributed to the change of the cellulose microstructure. Indeed, an opposite of the ON current behavior was registered when the diode was realized on a polyimide substrate. The realized flexible paper-based diodes offer a potential promising choice for printed environmental-friendly electronics.","PeriodicalId":133484,"journal":{"name":"2021 IEEE International Flexible Electronics Technology Conference (IFETC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125627403","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

Development of a Zn/MnO2 Based Flexible Battery 锌/二氧化锰基柔性电池的研制

2021 IEEE International Flexible Electronics Technology Conference (IFETC) Pub Date : 2021-08-08 DOI: 10.1109/IFETC49530.2021.9580507

J. Crosby, H. Emani, Xingzhe Zhang, D. Maddipatla, S. Ahmadi, Qingliu Wu, B. Bazuin, Matthew Stoops, M. Atashbar

引用次数: 8

Flexible Multi-Modal Capacitive Sensors with Polyurethane Foam Dielectrics for Wearables 可穿戴设备用聚氨酯泡沫介质柔性多模态电容传感器

2021 IEEE International Flexible Electronics Technology Conference (IFETC) Pub Date : 2021-08-08 DOI: 10.1109/IFETC49530.2021.9580528

Akanksha Rohi, S. Kaya

{"title":"Flexible Multi-Modal Capacitive Sensors with Polyurethane Foam Dielectrics for Wearables","authors":"Akanksha Rohi, S. Kaya","doi":"10.1109/IFETC49530.2021.9580528","DOIUrl":"https://doi.org/10.1109/IFETC49530.2021.9580528","url":null,"abstract":"We present on the design of highly-sensitive capacitive sensors using conductive textile electrodes and polyurethane (PU) foams as the dielectric layer for wearable sensing applications. Previous works involve complex processes in the fabrication of flexible, stretchable, and composite dielectrics using additional fillers or microstructures. In this work, we demonstrate a simple and cost-effective fabrication technique using polyurethane foam as the dielectric material to form capacitive sensors that are sensitive to stretching, bending and pressure. The magnitude of change in capacitance (10-60%) is increased due to the combined effect of micropores in the dielectric foam and the air gaps at the interface between the textile electrodes and dielectric layer. With the use of microporous PU foam, the change in capacitance under a mechanical load is not only due to the change in the thickness of the dielectric layer but also due to the change in the relative permittivity. Hence the proposed textile capacitive sensors can capture critical information when deployed in different locations on the body demonstrated via a shoe insert, speech detection, breathing and heart rate monitoring.","PeriodicalId":133484,"journal":{"name":"2021 IEEE International Flexible Electronics Technology Conference (IFETC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134462359","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: 2

Investigating the Impact of Thickness, Calendering and Channel Structures of Printed Electrodes on the Energy Density of LIBs - 3D Simulation and Validation 研究印刷电极的厚度、压延和沟道结构对lib能量密度的影响-三维仿真与验证

2021 IEEE International Flexible Electronics Technology Conference (IFETC) Pub Date : 2021-08-08 DOI: 10.1109/IFETC49530.2021.9580515

S. Ahmadi, Guanyi Wang, D. Maddipatla, Q. Wu, W. Lu, M. Atashbar

{"title":"Investigating the Impact of Thickness, Calendering and Channel Structures of Printed Electrodes on the Energy Density of LIBs - 3D Simulation and Validation","authors":"S. Ahmadi, Guanyi Wang, D. Maddipatla, Q. Wu, W. Lu, M. Atashbar","doi":"10.1109/IFETC49530.2021.9580515","DOIUrl":"https://doi.org/10.1109/IFETC49530.2021.9580515","url":null,"abstract":"Current lithium ion batteries (LIBs) are expensive and bulky, limited by relatively low charging rates. To increase the rate of charging and reduce weight, thin electrodes with high energy density are required. The increase in energy density can be achieved by several techniques including boosting electrolyte transport, high loading/utilization of active material, employing high conductive electrolytes and electrodes with advanced architectures, and increasing cell temperature. In this paper, a 3D physics-based electrochemical model of LIBs is developed in COMSOL simulation software for different thickness, calendering steps as well as channel structures (conical, cylindrical) to optimize the electrode design and in turn maximize volumetric energy density. The simulation results demonstrated that calendering the electrodes with high initial porosity increases the volumetric energy density of the cell. In addition, cylindrical channel structures with relatively lower edge-to-edge distance also results in increased volumetric energy density. The simulation results of the 3D model was validated by comparing it with experimental results.","PeriodicalId":133484,"journal":{"name":"2021 IEEE International Flexible Electronics Technology Conference (IFETC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128532593","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: 7