Colorimetric Sensor Based on Hydroxypropyl Cellulose for Wide Temperature Sensing Range
Recently, temperature monitoring with practical colorimetric sensors has been highlighted because they can directly visualize the temperature of surfaces without any power sources or electrical transducing systems. Accordingly, several colorimetric sensors that convert the temperature change into vi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/3/886 |
| _version_ | 1797484840634810368 |
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| author | Hoon Yi Sang-Hyeon Lee Dana Kim Hoon Eui Jeong Changyoon Jeong |
| author_facet | Hoon Yi Sang-Hyeon Lee Dana Kim Hoon Eui Jeong Changyoon Jeong |
| author_sort | Hoon Yi |
| collection | DOAJ |
| description | Recently, temperature monitoring with practical colorimetric sensors has been highlighted because they can directly visualize the temperature of surfaces without any power sources or electrical transducing systems. Accordingly, several colorimetric sensors that convert the temperature change into visible color alteration through various physical and chemical mechanisms have been proposed. However, the colorimetric temperature sensors that can be used at subzero temperatures and detect a wide range of temperatures have not been sufficiently explored. Here, we present a colorimetric sensory system that can detect and visualize a wide range of temperatures, even at a temperature below 0 °C. This system was developed with easily affordable materials via a simple fabrication method. The sensory system is mainly fabricated using hydroxypropyl cellulose (HPC) and ethylene glycol as the coolant. In this system, HPC can self-assemble into a temperature-responsive cholesteric liquid crystalline mesophase, and ethylene glycol can prevent the mesophase from freezing at low temperatures. The colorimetric sensory system can quantitatively visualize the temperature and show repeatability in the temperature change from −20 to 25 °C. This simple and reliable sensory system has great potential as a temperature-monitoring system for structures exposed to real environments. |
| first_indexed | 2024-03-09T23:10:16Z |
| format | Article |
| id | doaj.art-e384da5f33fa4bc591a0a1993c9375c4 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T23:10:16Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-e384da5f33fa4bc591a0a1993c9375c42023-11-23T17:47:01ZengMDPI AGSensors1424-82202022-01-0122388610.3390/s22030886Colorimetric Sensor Based on Hydroxypropyl Cellulose for Wide Temperature Sensing RangeHoon Yi0Sang-Hyeon Lee1Dana Kim2Hoon Eui Jeong3Changyoon Jeong4Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, KoreaDepartment of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, KoreaDepartment of Mechanical Engineering, Yeungnam University, Gyeongsan-si 38541, KoreaDepartment of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, KoreaDepartment of Mechanical Engineering, Yeungnam University, Gyeongsan-si 38541, KoreaRecently, temperature monitoring with practical colorimetric sensors has been highlighted because they can directly visualize the temperature of surfaces without any power sources or electrical transducing systems. Accordingly, several colorimetric sensors that convert the temperature change into visible color alteration through various physical and chemical mechanisms have been proposed. However, the colorimetric temperature sensors that can be used at subzero temperatures and detect a wide range of temperatures have not been sufficiently explored. Here, we present a colorimetric sensory system that can detect and visualize a wide range of temperatures, even at a temperature below 0 °C. This system was developed with easily affordable materials via a simple fabrication method. The sensory system is mainly fabricated using hydroxypropyl cellulose (HPC) and ethylene glycol as the coolant. In this system, HPC can self-assemble into a temperature-responsive cholesteric liquid crystalline mesophase, and ethylene glycol can prevent the mesophase from freezing at low temperatures. The colorimetric sensory system can quantitatively visualize the temperature and show repeatability in the temperature change from −20 to 25 °C. This simple and reliable sensory system has great potential as a temperature-monitoring system for structures exposed to real environments.https://www.mdpi.com/1424-8220/22/3/886colorimetric sensorcholesteric liquid crystalhydroxypropyl celluloseethylene glycol |
| spellingShingle | Hoon Yi Sang-Hyeon Lee Dana Kim Hoon Eui Jeong Changyoon Jeong Colorimetric Sensor Based on Hydroxypropyl Cellulose for Wide Temperature Sensing Range Sensors colorimetric sensor cholesteric liquid crystal hydroxypropyl cellulose ethylene glycol |
| title | Colorimetric Sensor Based on Hydroxypropyl Cellulose for Wide Temperature Sensing Range |
| title_full | Colorimetric Sensor Based on Hydroxypropyl Cellulose for Wide Temperature Sensing Range |
| title_fullStr | Colorimetric Sensor Based on Hydroxypropyl Cellulose for Wide Temperature Sensing Range |
| title_full_unstemmed | Colorimetric Sensor Based on Hydroxypropyl Cellulose for Wide Temperature Sensing Range |
| title_short | Colorimetric Sensor Based on Hydroxypropyl Cellulose for Wide Temperature Sensing Range |
| title_sort | colorimetric sensor based on hydroxypropyl cellulose for wide temperature sensing range |
| topic | colorimetric sensor cholesteric liquid crystal hydroxypropyl cellulose ethylene glycol |
| url | https://www.mdpi.com/1424-8220/22/3/886 |
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