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Wearable CNTs-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring
Sensors, such as optical, chemical, and electrical sensors, play an important role in our lives. While these sensors already have widespread applications, such as humidity sensors, most are generally incompatible with flexible/inactive substrates and rely on conventional hard materials and complex m...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Nature Singapore
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9343523/ https://www.ncbi.nlm.nih.gov/pubmed/35913549 http://dx.doi.org/10.1186/s40580-022-00326-6 |
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author | Kim, Han-Sem Kang, Ji-Hye Hwang, Ji-Young Shin, Ueon Sang |
author_facet | Kim, Han-Sem Kang, Ji-Hye Hwang, Ji-Young Shin, Ueon Sang |
author_sort | Kim, Han-Sem |
collection | PubMed |
description | Sensors, such as optical, chemical, and electrical sensors, play an important role in our lives. While these sensors already have widespread applications, such as humidity sensors, most are generally incompatible with flexible/inactive substrates and rely on conventional hard materials and complex manufacturing processes. To overcome this, we develop a CNT-based, low-resistance, and flexible humidity sensor. The core–shell structured CNT@CPM is prepared with Chit and PAMAM to achieve reliability, accuracy, consistency, and durability, resulting in a highly sensitive humidity sensor. The average response/recovery time of optimized sensor is only less than 20 s, with high sensitivity, consistent responsiveness, good linearity according to humidity rates, and low hysteresis (− 0.29 to 0.30 %RH). Moreover, it is highly reliable for long-term (at least 1 month), repeated bending (over 15,000 times), and provides accurate humidity measurement results. We apply the sensor to smart-wear, such as masks, that could conduct multi-respiratory monitoring in real-time through automatic ventilation systems. Several multi-respiratory monitoring results demonstrate its high responsiveness (less than 1.2 s) and consistent performance, indicating highly desirable for healthcare monitoring. Finally, these automatic ventilation systems paired with flexible sensors and applied to smart-wear can not only provide comfort but also enable stable and accurate healthcare in all environments. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s40580-022-00326-6. |
format | Online Article Text |
id | pubmed-9343523 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Springer Nature Singapore |
record_format | MEDLINE/PubMed |
spelling | pubmed-93435232022-08-03 Wearable CNTs-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring Kim, Han-Sem Kang, Ji-Hye Hwang, Ji-Young Shin, Ueon Sang Nano Converg Full Paper Sensors, such as optical, chemical, and electrical sensors, play an important role in our lives. While these sensors already have widespread applications, such as humidity sensors, most are generally incompatible with flexible/inactive substrates and rely on conventional hard materials and complex manufacturing processes. To overcome this, we develop a CNT-based, low-resistance, and flexible humidity sensor. The core–shell structured CNT@CPM is prepared with Chit and PAMAM to achieve reliability, accuracy, consistency, and durability, resulting in a highly sensitive humidity sensor. The average response/recovery time of optimized sensor is only less than 20 s, with high sensitivity, consistent responsiveness, good linearity according to humidity rates, and low hysteresis (− 0.29 to 0.30 %RH). Moreover, it is highly reliable for long-term (at least 1 month), repeated bending (over 15,000 times), and provides accurate humidity measurement results. We apply the sensor to smart-wear, such as masks, that could conduct multi-respiratory monitoring in real-time through automatic ventilation systems. Several multi-respiratory monitoring results demonstrate its high responsiveness (less than 1.2 s) and consistent performance, indicating highly desirable for healthcare monitoring. Finally, these automatic ventilation systems paired with flexible sensors and applied to smart-wear can not only provide comfort but also enable stable and accurate healthcare in all environments. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s40580-022-00326-6. Springer Nature Singapore 2022-08-01 /pmc/articles/PMC9343523/ /pubmed/35913549 http://dx.doi.org/10.1186/s40580-022-00326-6 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Full Paper Kim, Han-Sem Kang, Ji-Hye Hwang, Ji-Young Shin, Ueon Sang Wearable CNTs-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring |
title | Wearable CNTs-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring |
title_full | Wearable CNTs-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring |
title_fullStr | Wearable CNTs-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring |
title_full_unstemmed | Wearable CNTs-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring |
title_short | Wearable CNTs-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring |
title_sort | wearable cnts-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring |
topic | Full Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9343523/ https://www.ncbi.nlm.nih.gov/pubmed/35913549 http://dx.doi.org/10.1186/s40580-022-00326-6 |
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