Wireless, Flexible, Ion-Selective Electrode System for Selective and Repeatable Detection of Sodium
Wireless, flexible, ion-selective electrodes (ISEs) are of great interest in the development of wearable health monitors and clinical systems. Existing film-based electrochemical sensors, however, still have practical limitations due to poor electrical contact and material–interfacial leakage. Here,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/11/3297 |
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| author | Hyo-Ryoung Lim Yun-Soung Kim Shinjae Kwon Musa Mahmood Young-Tae Kwon Yongkuk Lee Soon Min Lee Woon-Hong Yeo |
| author_facet | Hyo-Ryoung Lim Yun-Soung Kim Shinjae Kwon Musa Mahmood Young-Tae Kwon Yongkuk Lee Soon Min Lee Woon-Hong Yeo |
| author_sort | Hyo-Ryoung Lim |
| collection | DOAJ |
| description | Wireless, flexible, ion-selective electrodes (ISEs) are of great interest in the development of wearable health monitors and clinical systems. Existing film-based electrochemical sensors, however, still have practical limitations due to poor electrical contact and material–interfacial leakage. Here, we introduce a wireless, flexible film-based system with a highly selective, stable, and reliable sodium sensor. A flexible and hydrophobic composite with carbon black and soft elastomer serves as an ion-to-electron transducer offering cost efficiency, design simplicity, and long-term stability. The sensor package demonstrates repeatable analysis of selective sodium detection in saliva with good sensitivity (56.1 mV/decade), stability (0.53 mV/h), and selectivity coefficient of sodium against potassium (−3.0). The film ISEs have an additional membrane coating that provides reinforced stability for the sensor upon mechanical bending. Collectively, the comprehensive study of materials, surface chemistry, and sensor design in this work shows the potential of the wireless flexible sensor system for low-profile wearable applications. |
| first_indexed | 2024-03-10T19:15:59Z |
| format | Article |
| id | doaj.art-5a65261fd846461a805ffaa00e6440be |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T19:15:59Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-5a65261fd846461a805ffaa00e6440be2023-11-20T03:24:38ZengMDPI AGSensors1424-82202020-06-012011329710.3390/s20113297Wireless, Flexible, Ion-Selective Electrode System for Selective and Repeatable Detection of SodiumHyo-Ryoung Lim0Yun-Soung Kim1Shinjae Kwon2Musa Mahmood3Young-Tae Kwon4Yongkuk Lee5Soon Min Lee6Woon-Hong Yeo7George W. Woodruff School of Mechanical Engineering, Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA 30332, USAGeorge W. Woodruff School of Mechanical Engineering, Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA 30332, USAGeorge W. Woodruff School of Mechanical Engineering, Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA 30332, USAGeorge W. Woodruff School of Mechanical Engineering, Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA 30332, USAGeorge W. Woodruff School of Mechanical Engineering, Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA 30332, USADepartment of Biomedical Engineering, Wichita State University, Wichita, KS 67260, USADepartment of Pediatrics, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, KoreaGeorge W. Woodruff School of Mechanical Engineering, Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA 30332, USAWireless, flexible, ion-selective electrodes (ISEs) are of great interest in the development of wearable health monitors and clinical systems. Existing film-based electrochemical sensors, however, still have practical limitations due to poor electrical contact and material–interfacial leakage. Here, we introduce a wireless, flexible film-based system with a highly selective, stable, and reliable sodium sensor. A flexible and hydrophobic composite with carbon black and soft elastomer serves as an ion-to-electron transducer offering cost efficiency, design simplicity, and long-term stability. The sensor package demonstrates repeatable analysis of selective sodium detection in saliva with good sensitivity (56.1 mV/decade), stability (0.53 mV/h), and selectivity coefficient of sodium against potassium (−3.0). The film ISEs have an additional membrane coating that provides reinforced stability for the sensor upon mechanical bending. Collectively, the comprehensive study of materials, surface chemistry, and sensor design in this work shows the potential of the wireless flexible sensor system for low-profile wearable applications.https://www.mdpi.com/1424-8220/20/11/3297wireless flexible sensor systemion-selective electrodesodium detectioncarbon–polymer composite transducer |
| spellingShingle | Hyo-Ryoung Lim Yun-Soung Kim Shinjae Kwon Musa Mahmood Young-Tae Kwon Yongkuk Lee Soon Min Lee Woon-Hong Yeo Wireless, Flexible, Ion-Selective Electrode System for Selective and Repeatable Detection of Sodium Sensors wireless flexible sensor system ion-selective electrode sodium detection carbon–polymer composite transducer |
| title | Wireless, Flexible, Ion-Selective Electrode System for Selective and Repeatable Detection of Sodium |
| title_full | Wireless, Flexible, Ion-Selective Electrode System for Selective and Repeatable Detection of Sodium |
| title_fullStr | Wireless, Flexible, Ion-Selective Electrode System for Selective and Repeatable Detection of Sodium |
| title_full_unstemmed | Wireless, Flexible, Ion-Selective Electrode System for Selective and Repeatable Detection of Sodium |
| title_short | Wireless, Flexible, Ion-Selective Electrode System for Selective and Repeatable Detection of Sodium |
| title_sort | wireless flexible ion selective electrode system for selective and repeatable detection of sodium |
| topic | wireless flexible sensor system ion-selective electrode sodium detection carbon–polymer composite transducer |
| url | https://www.mdpi.com/1424-8220/20/11/3297 |
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