Pub Date : 2022-07-10DOI: 10.1109/fleps53764.2022.9781540
X. Zhang, D. He, H. Emani, M. Panahi, S. Masihi, D. Maddipatla, Q. Yang, M. Atashbar
A novel flexible triboelectric nanogenerator (TENG) was designed and fabricated for energy harvesting applications. The TENG consists of polystyrene-block-polybutadiene-block-polystyrene (SBS) and polyvinylidene fluoride (PVDF) composite as negative layer and polydimethylsiloxane (PDMS) as positive layer. The SBS/PVDF was prepared by mixing SBS (25 wt%), PVDF (1 wt%) in Tetrahydrofuran (THF) solution and bar coated on to a copper film. Similarly, PDMS was prepared by mixing liquid pre-polymer with curing agent and bar coated on to an aluminum film. In this work, SBS was first time implemented in TENG application and the capability of the developed TENG in term of open circuit voltage (OCV) was investigated by subjecting it to a force of 30 N with a maximum OCV of 178 V.
{"title":"A Novel High Voltage SBS/PVDF based Flexible Triboelectric Nanogenerator","authors":"X. Zhang, D. He, H. Emani, M. Panahi, S. Masihi, D. Maddipatla, Q. Yang, M. Atashbar","doi":"10.1109/fleps53764.2022.9781540","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781540","url":null,"abstract":"A novel flexible triboelectric nanogenerator (TENG) was designed and fabricated for energy harvesting applications. The TENG consists of polystyrene-block-polybutadiene-block-polystyrene (SBS) and polyvinylidene fluoride (PVDF) composite as negative layer and polydimethylsiloxane (PDMS) as positive layer. The SBS/PVDF was prepared by mixing SBS (25 wt%), PVDF (1 wt%) in Tetrahydrofuran (THF) solution and bar coated on to a copper film. Similarly, PDMS was prepared by mixing liquid pre-polymer with curing agent and bar coated on to an aluminum film. In this work, SBS was first time implemented in TENG application and the capability of the developed TENG in term of open circuit voltage (OCV) was investigated by subjecting it to a force of 30 N with a maximum OCV of 178 V.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129833725","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}
Pub Date : 2022-07-10DOI: 10.1109/fleps53764.2022.9781534
Ajay Beniwal, Priyanka Ganguly, D. K. Neethipathi, R. Dahiya
In this work, we present a screen-printed humidity sensor fabricated on a flexible polyvinyl chloride (PVC) substrate. A comparative analysis has been carried out for printed graphene-carbon electrode with and without Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) modification in the humidity sensing range of 25 - 90 %RH. The sensor modified with PEDOT:PSS demonstrated enhanced performance ( ~ 1 %/%RH versus ~ 0.8 %/%RH of unmodified sensor). Further, the enhancement in the performance of the modified sensor was found to be prominent in the low to moderate humidity range (≤60 %RH). The repeatability, response and recovery time were also analysed for both types of sensors and their applicability has been demonstrated for neonatal care by monitoring the humidity level of a wet baby diapers. This demonstration shows the potential application of presented humidity sensors in areas such as environmental monitoring, healthcare, industrial, and agriculture.
{"title":"PEDOT:PSS modified Screen Printed Graphene-Carbon Ink based Flexible Humidity Sensor","authors":"Ajay Beniwal, Priyanka Ganguly, D. K. Neethipathi, R. Dahiya","doi":"10.1109/fleps53764.2022.9781534","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781534","url":null,"abstract":"In this work, we present a screen-printed humidity sensor fabricated on a flexible polyvinyl chloride (PVC) substrate. A comparative analysis has been carried out for printed graphene-carbon electrode with and without Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) modification in the humidity sensing range of 25 - 90 %RH. The sensor modified with PEDOT:PSS demonstrated enhanced performance ( ~ 1 %/%RH versus ~ 0.8 %/%RH of unmodified sensor). Further, the enhancement in the performance of the modified sensor was found to be prominent in the low to moderate humidity range (≤60 %RH). The repeatability, response and recovery time were also analysed for both types of sensors and their applicability has been demonstrated for neonatal care by monitoring the humidity level of a wet baby diapers. This demonstration shows the potential application of presented humidity sensors in areas such as environmental monitoring, healthcare, industrial, and agriculture.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130100671","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}
Pub Date : 2022-07-10DOI: 10.1109/fleps53764.2022.9781567
P. Petz, F. Eibensteiner, J. Langer
The electrical and mechanical properties of textile sensors are highly dependent on their environment, enabling unobtrusive sensing applications. However, prolonged usage and ageing effects further affect these applications, especially when flexibility and washability are required. These effects reduce the accuracy and reliability of textile sensors and decreases their usable lifetime. Since there are neither suitable physical models nor existing datasets of aged textiles for newly developed textile sensors, accelerated ageing tests are required to generate enough information for the modelling and training process. This paper uses various types of accelerated aged conductive textiles and analyses their behaviour. Models of wear and ageing can be used to improve the accuracy of sensor systems, assess their reliability, and better understand the ageing process of textile sensors. This allows to increase the usable lifetime of textile sensor systems and give an estimate of reliability of textile based sensor readings for security critical applications.
{"title":"Reliability of Conductive Textile Sensors Exposed to Ageing and Prolonged Use","authors":"P. Petz, F. Eibensteiner, J. Langer","doi":"10.1109/fleps53764.2022.9781567","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781567","url":null,"abstract":"The electrical and mechanical properties of textile sensors are highly dependent on their environment, enabling unobtrusive sensing applications. However, prolonged usage and ageing effects further affect these applications, especially when flexibility and washability are required. These effects reduce the accuracy and reliability of textile sensors and decreases their usable lifetime. Since there are neither suitable physical models nor existing datasets of aged textiles for newly developed textile sensors, accelerated ageing tests are required to generate enough information for the modelling and training process. This paper uses various types of accelerated aged conductive textiles and analyses their behaviour. Models of wear and ageing can be used to improve the accuracy of sensor systems, assess their reliability, and better understand the ageing process of textile sensors. This allows to increase the usable lifetime of textile sensor systems and give an estimate of reliability of textile based sensor readings for security critical applications.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131837590","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}
Pub Date : 2022-07-10DOI: 10.1109/fleps53764.2022.9781518
Christian Biermaier, Carolin Gleissner, T. Bechtold, T. Pham
The formation of flexible conductive structures is essential for the manufacturing of flexible electronic devices. On textile substrates, the formation of defined conductive structures is still a challenge. In this work, we have developed a novel method for silver precursor seeding with subsequent electroless copper deposition (ECD) to overcome this issue. The technique is based on the addition of silver nitrate to citrate impregnated fabrics, leading to a surficial fixation via precipitation and thermal decomposition. Silver nitrate solution printing allowed conductive lines of 2-3 mm with electrical resistances below 1 Ωcm-1. In situ resistance recording revealed the course of percolation establishment and percolation removal for chemical ageing.
{"title":"Localised Catalyst Printing for Flexible Conductive Lines by Electroless Copper Deposition on Textiles","authors":"Christian Biermaier, Carolin Gleissner, T. Bechtold, T. Pham","doi":"10.1109/fleps53764.2022.9781518","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781518","url":null,"abstract":"The formation of flexible conductive structures is essential for the manufacturing of flexible electronic devices. On textile substrates, the formation of defined conductive structures is still a challenge. In this work, we have developed a novel method for silver precursor seeding with subsequent electroless copper deposition (ECD) to overcome this issue. The technique is based on the addition of silver nitrate to citrate impregnated fabrics, leading to a surficial fixation via precipitation and thermal decomposition. Silver nitrate solution printing allowed conductive lines of 2-3 mm with electrical resistances below 1 Ωcm-1. In situ resistance recording revealed the course of percolation establishment and percolation removal for chemical ageing.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132020329","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}
Pub Date : 2022-07-10DOI: 10.1109/fleps53764.2022.9781595
A. Wiatrowska, K. Fiączyk, P. Kowalczewski, M. Łysień, Łukasz Witczak, Jolanta Gadzalińska, Ludovic Schneider, Łukasz Kosior, F. Granek
We demonstrate a novel Ultra-Precise Deposition (UPD) technology for heterogeneous integration in advanced packaging and printing interconnections on flexible substrates. UPD allows maskless deposition of highly-concentrated pastes on complex substrates. The printing resolution is in the range from 1 to 10 µm. The ink viscosity is up to 2,500,000 cP, which corresponds to 85% wt. of metal content and the electrical conductivity of printed structures is up to 45% of the bulk value. This technology is designed for rapid prototyping and manufacturing of next-generation printed and flexible electronics devices, including sensors, integrated circuits, displays, and energy harvesting systems.
{"title":"Depositon of Micrometer-Size Features on Complex Substrates for Heterogeneous Integration","authors":"A. Wiatrowska, K. Fiączyk, P. Kowalczewski, M. Łysień, Łukasz Witczak, Jolanta Gadzalińska, Ludovic Schneider, Łukasz Kosior, F. Granek","doi":"10.1109/fleps53764.2022.9781595","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781595","url":null,"abstract":"We demonstrate a novel Ultra-Precise Deposition (UPD) technology for heterogeneous integration in advanced packaging and printing interconnections on flexible substrates. UPD allows maskless deposition of highly-concentrated pastes on complex substrates. The printing resolution is in the range from 1 to 10 µm. The ink viscosity is up to 2,500,000 cP, which corresponds to 85% wt. of metal content and the electrical conductivity of printed structures is up to 45% of the bulk value. This technology is designed for rapid prototyping and manufacturing of next-generation printed and flexible electronics devices, including sensors, integrated circuits, displays, and energy harvesting systems.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132850824","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}
Pub Date : 2022-07-10DOI: 10.1109/fleps53764.2022.9781531
Miao Li, Nazmul Rafi, Paul R. Berger, D. Lupo, M. Mantysalo
In this work, a flexible solution processed polymer diode with a structure of aluminum/indacenodithiophene-benzothiadiazole (C16-IDT-BT)/molybdenum trioxide/gold was developed. A DC rectification ratio of 7×103 was achieved at 2 V with a forward current density of 2.6 mA/cm2 and a reverse current density of 0.37 µA/cm2. The UV-ozone treated MoO3 layer acted as a hole injection layer for the C16-IDT-BT layer to enhance the forward current density. The Au electrode with a higher work function compared to Ag was a superior anode for the polymer diode. The diode can be used as a blocking diode to allow the current to flow in the desired direction.
{"title":"Flexible Polymer Rectifying Diode on Plastic Foils with MoO3 Hole Injection","authors":"Miao Li, Nazmul Rafi, Paul R. Berger, D. Lupo, M. Mantysalo","doi":"10.1109/fleps53764.2022.9781531","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781531","url":null,"abstract":"In this work, a flexible solution processed polymer diode with a structure of aluminum/indacenodithiophene-benzothiadiazole (C16-IDT-BT)/molybdenum trioxide/gold was developed. A DC rectification ratio of 7×103 was achieved at 2 V with a forward current density of 2.6 mA/cm2 and a reverse current density of 0.37 µA/cm2. The UV-ozone treated MoO3 layer acted as a hole injection layer for the C16-IDT-BT layer to enhance the forward current density. The Au electrode with a higher work function compared to Ag was a superior anode for the polymer diode. The diode can be used as a blocking diode to allow the current to flow in the desired direction.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130977535","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}
Pub Date : 2022-07-10DOI: 10.1109/fleps53764.2022.9781574
L. Neumaier, Lukas Rauter, S. Lengger, S. Khan, J. Kosel
Within this work we demonstrate a versatile approach for the creation of laser-induced graphene sensors by a direct transfer process onto virtually any kind of substrate. The process is based on preconditioning the substrate with a layer of polyimide sealing resin and subsequently laser scribing the sensor structure onto it. By tuning the resin thickness and laser parameters, the resin is entirely removed and the resulting LIG is firmly embedded on top of the substrate. The measurement results show a gauge factor of 0.51 %.
{"title":"A direct transfer process for laser-induced graphene sensors on any substrate","authors":"L. Neumaier, Lukas Rauter, S. Lengger, S. Khan, J. Kosel","doi":"10.1109/fleps53764.2022.9781574","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781574","url":null,"abstract":"Within this work we demonstrate a versatile approach for the creation of laser-induced graphene sensors by a direct transfer process onto virtually any kind of substrate. The process is based on preconditioning the substrate with a layer of polyimide sealing resin and subsequently laser scribing the sensor structure onto it. By tuning the resin thickness and laser parameters, the resin is entirely removed and the resulting LIG is firmly embedded on top of the substrate. The measurement results show a gauge factor of 0.51 %.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131077046","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}
Pub Date : 2022-07-10DOI: 10.1109/fleps53764.2022.9781557
Jindong Wei, Z. Cheng
A novel approach to fabricate flexible energy storage ultracapacitors is introduced in this work. Dielectric polymers have been used in the fabrication of energy storage capacitors. To improve the energy storage performance of the dielectric polymers, composite approach has been extensively studied in last two decades with the focus on inorganic-polymer composites. Here. composites of polymer and organic small molecules are studied. The all-organic composites are flexible, even better than the dielectric polymer itself. More interestingly, the energy storage performance is enhanced. For example, energy storage density of the all-organic composites of P(VDF-CTFE) and silane is more than 64% higher than P(VDF-CTFE) itself. All these make the all-organic composites great candidates for the development of flexible energy storage devices for wearable electronics.
{"title":"Flexible all-organic composites with ultrahigh energy storage density for wearable electronics","authors":"Jindong Wei, Z. Cheng","doi":"10.1109/fleps53764.2022.9781557","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781557","url":null,"abstract":"A novel approach to fabricate flexible energy storage ultracapacitors is introduced in this work. Dielectric polymers have been used in the fabrication of energy storage capacitors. To improve the energy storage performance of the dielectric polymers, composite approach has been extensively studied in last two decades with the focus on inorganic-polymer composites. Here. composites of polymer and organic small molecules are studied. The all-organic composites are flexible, even better than the dielectric polymer itself. More interestingly, the energy storage performance is enhanced. For example, energy storage density of the all-organic composites of P(VDF-CTFE) and silane is more than 64% higher than P(VDF-CTFE) itself. All these make the all-organic composites great candidates for the development of flexible energy storage devices for wearable electronics.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124388366","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}
Pub Date : 2022-07-10DOI: 10.1109/fleps53764.2022.9781547
Oliver Ozioko, R. Dahiya
This work presents a flexible piezoresistive sensor for measuring the bending angles to facilitate controlled movements in soft robots. The sensors was realized using a piezoresistive sensing material prepared by mixing graphite in a polyvinylidene fluoride (PVDF) solution. The resultant graphite solution was spray-coated on a ~80µ-thick polyvinylchloride (PVC) substrate to realize a 5 x 5cm- wide piezoresistive film. Three similar sensors (~3mm x 30mm in dimension) were realized and their performance compared. The results obtained show a change in resistance ΔR/RO ~80% for a bending angle of 50o and a sensitivity of ~ ΔR/Ro = 1.5% per degree bending. The sensor makes it possible to measure in real-time the bending of soft and flexible robot as it can uniquely detect the bending conditions. Hence, the sensing information from the sensor could be used for a close loop control of their locomotion or reconstruction of their shapes.
{"title":"Spray Coated Piezoresistive Bend Sensor for Controlled Movements in Soft Robots","authors":"Oliver Ozioko, R. Dahiya","doi":"10.1109/fleps53764.2022.9781547","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781547","url":null,"abstract":"This work presents a flexible piezoresistive sensor for measuring the bending angles to facilitate controlled movements in soft robots. The sensors was realized using a piezoresistive sensing material prepared by mixing graphite in a polyvinylidene fluoride (PVDF) solution. The resultant graphite solution was spray-coated on a ~80µ-thick polyvinylchloride (PVC) substrate to realize a 5 x 5cm- wide piezoresistive film. Three similar sensors (~3mm x 30mm in dimension) were realized and their performance compared. The results obtained show a change in resistance ΔR/RO ~80% for a bending angle of 50o and a sensitivity of ~ ΔR/Ro = 1.5% per degree bending. The sensor makes it possible to measure in real-time the bending of soft and flexible robot as it can uniquely detect the bending conditions. Hence, the sensing information from the sensor could be used for a close loop control of their locomotion or reconstruction of their shapes.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123396997","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}
Pub Date : 2022-07-10DOI: 10.1109/fleps53764.2022.9781521
Maryna Lazouskaya, O. Scheler, K. Uppuluri, Krzysztof Zaraska, M. Tamm
Nafion™ (Nafion) membrane is known to improve the performance of the electrochemical sensors by acting as a semi-permeable barrier when applied on the electrode’s surface. However, the Nafion membrane is soft and can degrade with time. In order to see if the Nafion membrane can be cast repeatedly, we investigated the reusability of Nafion-covered electrodes. In this paper, we present the results of the investigation of the performance of the potentiometric pH-electrodes, based on Ruthenium(IV) oxide (RuO2), that were covered with Nafion membrane several times. The electrodes were fabricated by screen printing method and modified with Nafion by drop-casting technique. The investigation of the performance was based on the evaluation of the most important electrode characteristics: sensitivity and linearity, hysteresis, and drift. We have demonstrated that the screen printed RuO2 electrodes show excellent electrochemical characteristics at room temperature even after coating them with Nafion for the third time.
{"title":"Reusability of RuO2-Nafion electrodes, suitable for potentiometric pH measurement","authors":"Maryna Lazouskaya, O. Scheler, K. Uppuluri, Krzysztof Zaraska, M. Tamm","doi":"10.1109/fleps53764.2022.9781521","DOIUrl":"https://doi.org/10.1109/fleps53764.2022.9781521","url":null,"abstract":"Nafion™ (Nafion) membrane is known to improve the performance of the electrochemical sensors by acting as a semi-permeable barrier when applied on the electrode’s surface. However, the Nafion membrane is soft and can degrade with time. In order to see if the Nafion membrane can be cast repeatedly, we investigated the reusability of Nafion-covered electrodes. In this paper, we present the results of the investigation of the performance of the potentiometric pH-electrodes, based on Ruthenium(IV) oxide (RuO2), that were covered with Nafion membrane several times. The electrodes were fabricated by screen printing method and modified with Nafion by drop-casting technique. The investigation of the performance was based on the evaluation of the most important electrode characteristics: sensitivity and linearity, hysteresis, and drift. We have demonstrated that the screen printed RuO2 electrodes show excellent electrochemical characteristics at room temperature even after coating them with Nafion for the third time.","PeriodicalId":221424,"journal":{"name":"2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123168583","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}
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