Highly conductive fiber with design of dual conductive Ag/CB layers for ultrasensitive and wide‐range strain sensing
Abstract Recently the ever‐increasing demand for wearable electronics has greatly triggered the development of flexible strain sensors. However, it is still challenging to simultaneously achieve high sensitivity, wide working range, and good wearability. Herein, we developed a highly stretchable fib...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-12-01
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| Series: | SmartMat |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/smm2.1178 |
| _version_ | 1797391377856724992 |
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| author | Ben Niu Su Yang Yiyi Yang Tao Hua |
| author_facet | Ben Niu Su Yang Yiyi Yang Tao Hua |
| author_sort | Ben Niu |
| collection | DOAJ |
| description | Abstract Recently the ever‐increasing demand for wearable electronics has greatly triggered the development of flexible strain sensors. However, it is still challenging to simultaneously achieve high sensitivity, wide working range, and good wearability. Herein, we developed a highly stretchable fiber strain sensor based on wet‐spun porous polyurethane (PU) fiber, and especially a unique conductive network of dual silver (Ag)/carbon black (CB) layers is constructed. Under strain, the rapid crack propagation on the brittle Ag layer brings a large resistance change and thus high sensitivity, while the tunneling‐effect dominated CB layer bridges the separated Ag islands to maintain the integrity of conductive pathways under large strain. By means of the synergistic effect of Ag/CB layers, this composite fiber of Ag/CB@PU presents not only high conductivity of 5139.9 S/m, but also ultrahigh sensitivity with a gauge factor of 2.52 × 106 and a wide working range of up to 200%. Besides that, it is also capable of detecting very tiny strain of 0.1% and working stably for over 8000 cycles. Using mature weaving technology, this fiber strain sensor can be seamlessly integrated into the textile to conformally track different movements of the human body. Together with the facile all‐solution‐based fabrication protocol, this work proposed a new strategy to prepare high‐performance fiber strain sensor, promising the textile‐based wearable applications. |
| first_indexed | 2024-03-08T23:32:07Z |
| format | Article |
| id | doaj.art-c927f3f05f4d4cac90083e17f938dbb4 |
| institution | Directory Open Access Journal |
| issn | 2688-819X |
| language | English |
| last_indexed | 2024-03-08T23:32:07Z |
| publishDate | 2023-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | SmartMat |
| spelling | doaj.art-c927f3f05f4d4cac90083e17f938dbb42023-12-14T13:13:33ZengWileySmartMat2688-819X2023-12-0146n/an/a10.1002/smm2.1178Highly conductive fiber with design of dual conductive Ag/CB layers for ultrasensitive and wide‐range strain sensingBen Niu0Su Yang1Yiyi Yang2Tao Hua3School of Fashion & Textiles The Hong Kong Polytechnic University Hong Kong SAR ChinaSchool of Fashion & Textiles The Hong Kong Polytechnic University Hong Kong SAR ChinaSchool of Fashion & Textiles The Hong Kong Polytechnic University Hong Kong SAR ChinaSchool of Fashion & Textiles The Hong Kong Polytechnic University Hong Kong SAR ChinaAbstract Recently the ever‐increasing demand for wearable electronics has greatly triggered the development of flexible strain sensors. However, it is still challenging to simultaneously achieve high sensitivity, wide working range, and good wearability. Herein, we developed a highly stretchable fiber strain sensor based on wet‐spun porous polyurethane (PU) fiber, and especially a unique conductive network of dual silver (Ag)/carbon black (CB) layers is constructed. Under strain, the rapid crack propagation on the brittle Ag layer brings a large resistance change and thus high sensitivity, while the tunneling‐effect dominated CB layer bridges the separated Ag islands to maintain the integrity of conductive pathways under large strain. By means of the synergistic effect of Ag/CB layers, this composite fiber of Ag/CB@PU presents not only high conductivity of 5139.9 S/m, but also ultrahigh sensitivity with a gauge factor of 2.52 × 106 and a wide working range of up to 200%. Besides that, it is also capable of detecting very tiny strain of 0.1% and working stably for over 8000 cycles. Using mature weaving technology, this fiber strain sensor can be seamlessly integrated into the textile to conformally track different movements of the human body. Together with the facile all‐solution‐based fabrication protocol, this work proposed a new strategy to prepare high‐performance fiber strain sensor, promising the textile‐based wearable applications.https://doi.org/10.1002/smm2.1178carbon blackconductive fiberstrain sensortextile |
| spellingShingle | Ben Niu Su Yang Yiyi Yang Tao Hua Highly conductive fiber with design of dual conductive Ag/CB layers for ultrasensitive and wide‐range strain sensing SmartMat carbon black conductive fiber strain sensor textile |
| title | Highly conductive fiber with design of dual conductive Ag/CB layers for ultrasensitive and wide‐range strain sensing |
| title_full | Highly conductive fiber with design of dual conductive Ag/CB layers for ultrasensitive and wide‐range strain sensing |
| title_fullStr | Highly conductive fiber with design of dual conductive Ag/CB layers for ultrasensitive and wide‐range strain sensing |
| title_full_unstemmed | Highly conductive fiber with design of dual conductive Ag/CB layers for ultrasensitive and wide‐range strain sensing |
| title_short | Highly conductive fiber with design of dual conductive Ag/CB layers for ultrasensitive and wide‐range strain sensing |
| title_sort | highly conductive fiber with design of dual conductive ag cb layers for ultrasensitive and wide range strain sensing |
| topic | carbon black conductive fiber strain sensor textile |
| url | https://doi.org/10.1002/smm2.1178 |
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