Giant Humidity Response Using a Chitosan-Based Protonic Conductive Sensor
As a natural biopolymer, chitosan has a very unique protonic conductivity that is highly sensitive to water vapor. However, there has been no report on pure chitosan-based resistive humidity sensors, probably due to the difficulty of direct-current measurement of protonic current in chitosan. Here,...
| 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/10356/85996 http://hdl.handle.net/10220/43912 |
| _version_ | 1826117663234981888 |
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| author | Zou, Jianping Zhang, Kang Zhang, Qing |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Zou, Jianping Zhang, Kang Zhang, Qing |
| author_sort | Zou, Jianping |
| collection | NTU |
| description | As a natural biopolymer, chitosan has a very unique protonic conductivity that is highly sensitive to water vapor. However, there has been no report on pure chitosan-based resistive humidity sensors, probably due to the difficulty of direct-current measurement of protonic current in chitosan. Here, a simple and cost-effective chitosan-based protonic conductive humidity sensor is presented. The sensor exhibits a large conductance response of four orders of magnitude when relative humidity is increased from 10% up to 90%. The effects of adsorbed water on proton density and dielectric constant change of chitosan could be responsible for the giant humidity response. More importantly, the sensor shows high stability, repeatability, recoverability, and selectivity to water vapor over ethanol, acetone, and toluene vapors. |
| first_indexed | 2024-10-01T04:30:59Z |
| format | Journal Article |
| id | ntu-10356/85996 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:30:59Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/859962020-03-07T13:57:29Z Giant Humidity Response Using a Chitosan-Based Protonic Conductive Sensor Zou, Jianping Zhang, Kang Zhang, Qing School of Electrical and Electronic Engineering Centre for Micro-/Nano-electronics (NOVITAS) Humidity Chitosan As a natural biopolymer, chitosan has a very unique protonic conductivity that is highly sensitive to water vapor. However, there has been no report on pure chitosan-based resistive humidity sensors, probably due to the difficulty of direct-current measurement of protonic current in chitosan. Here, a simple and cost-effective chitosan-based protonic conductive humidity sensor is presented. The sensor exhibits a large conductance response of four orders of magnitude when relative humidity is increased from 10% up to 90%. The effects of adsorbed water on proton density and dielectric constant change of chitosan could be responsible for the giant humidity response. More importantly, the sensor shows high stability, repeatability, recoverability, and selectivity to water vapor over ethanol, acetone, and toluene vapors. MOE (Min. of Education, S’pore) 2017-10-17T06:50:29Z 2019-12-06T16:14:03Z 2017-10-17T06:50:29Z 2019-12-06T16:14:03Z 2016 Journal Article Zou, J., Zhang, K., & Zhang, Q. (2016). Giant Humidity Response Using a Chitosan-Based Protonic Conductive Sensor. IEEE Sensors Journal, 16(24), 8884-8889. 1530-437X https://hdl.handle.net/10356/85996 http://hdl.handle.net/10220/43912 10.1109/JSEN.2016.2616484 en IEEE Sensors Journal © 2016 IEEE. |
| spellingShingle | Humidity Chitosan Zou, Jianping Zhang, Kang Zhang, Qing Giant Humidity Response Using a Chitosan-Based Protonic Conductive Sensor |
| title | Giant Humidity Response Using a Chitosan-Based Protonic Conductive Sensor |
| title_full | Giant Humidity Response Using a Chitosan-Based Protonic Conductive Sensor |
| title_fullStr | Giant Humidity Response Using a Chitosan-Based Protonic Conductive Sensor |
| title_full_unstemmed | Giant Humidity Response Using a Chitosan-Based Protonic Conductive Sensor |
| title_short | Giant Humidity Response Using a Chitosan-Based Protonic Conductive Sensor |
| title_sort | giant humidity response using a chitosan based protonic conductive sensor |
| topic | Humidity Chitosan |
| url | https://hdl.handle.net/10356/85996 http://hdl.handle.net/10220/43912 |
| work_keys_str_mv | AT zoujianping gianthumidityresponseusingachitosanbasedprotonicconductivesensor AT zhangkang gianthumidityresponseusingachitosanbasedprotonicconductivesensor AT zhangqing gianthumidityresponseusingachitosanbasedprotonicconductivesensor |