Porous Ionic Membrane Based Flexible Humidity Sensor and its Multifunctional Applications
A highly flexible porous ionic membrane (PIM) is fabricated from a polyvinyl alcohol/KOH polymer gel electrolyte, showing well-defined 3D porous structure. The conductance of the PIM changes more than 70 times as the relative humidity (RH) increases from 10.89% to 81.75% with fast and reversible res...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2017
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| Online Access: | https://hdl.handle.net/10356/86537 http://hdl.handle.net/10220/44045 |
| _version_ | 1811686138849525760 |
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| author | Li, Tie Li, Lianhui Sun, Hongwei Xu, Yan Wang, Xuewen Luo, Hui Liu, Zheng Zhang, Ting |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Li, Tie Li, Lianhui Sun, Hongwei Xu, Yan Wang, Xuewen Luo, Hui Liu, Zheng Zhang, Ting |
| author_sort | Li, Tie |
| collection | NTU |
| description | A highly flexible porous ionic membrane (PIM) is fabricated from a polyvinyl alcohol/KOH polymer gel electrolyte, showing well-defined 3D porous structure. The conductance of the PIM changes more than 70 times as the relative humidity (RH) increases from 10.89% to 81.75% with fast and reversible response at room temperature. In addition, the PIM-based sensor is insensitive to temperature (0–95 °C) and pressure (0–6.8 kPa) change, which indicates that it can be used as highly selective flexible humidity sensor. A noncontact switch system containing PIM-based sensor is assembled, and results show that the switch responds favorably to RH change caused by an approaching finger. Moreover, an attachable smart label using PIM-based sensor is explored to measure the water contents of human skin, which shows a great linear relationship between the sensitivity of the sensor and the facial water contents measured by a commercial reference device. |
| first_indexed | 2024-10-01T04:55:39Z |
| format | Journal Article |
| id | ntu-10356/86537 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:55:39Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/865372023-07-14T15:51:31Z Porous Ionic Membrane Based Flexible Humidity Sensor and its Multifunctional Applications Li, Tie Li, Lianhui Sun, Hongwei Xu, Yan Wang, Xuewen Luo, Hui Liu, Zheng Zhang, Ting School of Materials Science & Engineering Centre for Programmable Materials Flexible sensors Humidity sensors A highly flexible porous ionic membrane (PIM) is fabricated from a polyvinyl alcohol/KOH polymer gel electrolyte, showing well-defined 3D porous structure. The conductance of the PIM changes more than 70 times as the relative humidity (RH) increases from 10.89% to 81.75% with fast and reversible response at room temperature. In addition, the PIM-based sensor is insensitive to temperature (0–95 °C) and pressure (0–6.8 kPa) change, which indicates that it can be used as highly selective flexible humidity sensor. A noncontact switch system containing PIM-based sensor is assembled, and results show that the switch responds favorably to RH change caused by an approaching finger. Moreover, an attachable smart label using PIM-based sensor is explored to measure the water contents of human skin, which shows a great linear relationship between the sensitivity of the sensor and the facial water contents measured by a commercial reference device. Published version 2017-11-15T06:46:07Z 2019-12-06T16:24:14Z 2017-11-15T06:46:07Z 2019-12-06T16:24:14Z 2017 Journal Article Li, T., Li, L., Sun, H., Xu, Y., Wang, X., Luo, H., et al. (2017). Porous Ionic Membrane Based Flexible Humidity Sensor and its Multifunctional Applications. Advanced Science, 4(5), 1600404-. https://hdl.handle.net/10356/86537 http://hdl.handle.net/10220/44045 10.1002/advs.201600404 en Advanced Science © 2017 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This paper was published in Advanced Science and is made available as an electronic reprint (preprint) with permission of WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. The published version is available at: [http://dx.doi.org/10.1002/advs.201600404]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 7 p. application/pdf |
| spellingShingle | Flexible sensors Humidity sensors Li, Tie Li, Lianhui Sun, Hongwei Xu, Yan Wang, Xuewen Luo, Hui Liu, Zheng Zhang, Ting Porous Ionic Membrane Based Flexible Humidity Sensor and its Multifunctional Applications |
| title | Porous Ionic Membrane Based Flexible Humidity Sensor and its Multifunctional Applications |
| title_full | Porous Ionic Membrane Based Flexible Humidity Sensor and its Multifunctional Applications |
| title_fullStr | Porous Ionic Membrane Based Flexible Humidity Sensor and its Multifunctional Applications |
| title_full_unstemmed | Porous Ionic Membrane Based Flexible Humidity Sensor and its Multifunctional Applications |
| title_short | Porous Ionic Membrane Based Flexible Humidity Sensor and its Multifunctional Applications |
| title_sort | porous ionic membrane based flexible humidity sensor and its multifunctional applications |
| topic | Flexible sensors Humidity sensors |
| url | https://hdl.handle.net/10356/86537 http://hdl.handle.net/10220/44045 |
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