Tin Disulfide-Coated Microfiber for Humidity Sensing with Fast Response and High Sensitivity
| Autor: | Huadan Zheng, Yuxin Lin, Jianhui Yu, Heyuan Guan, Aijie Liang, Wenguo Zhu, Huihui Lu, Wentao Qiu, Shuo Zhang, Zhe Chen, Yi Zhang, Ganding Peng, Jiangli Dong, Jingyuan Ming, Xinyang Han, Yaoming Huang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Optical fiber business.product_category General Chemical Engineering chemistry.chemical_element 02 engineering and technology humidity sensing engineering.material 01 natural sciences law.invention two dimensional material 010309 optics Inorganic Chemistry Coating law microfiber SnS2 0103 physical sciences Microfiber General Materials Science Relative humidity Crystallography business.industry Disulfide bond Humidity 021001 nanoscience & nanotechnology Condensed Matter Physics chemistry QD901-999 engineering Optoelectronics 0210 nano-technology business Tin Sensitivity (electronics) |
| Zdroj: | Crystals Volume 11 Issue 6 Crystals, Vol 11, Iss 648, p 648 (2021) |
| ISSN: | 2073-4352 |
| DOI: | 10.3390/cryst11060648 |
| Popis: | Breath monitoring is significant in assessing human body conditions, such as cardiac and pulmonary symptoms. Optical fiber-based sensors have attracted much attention since they are immune to electromagnetic radiation, thus are safe for patients. Here, a microfiber (MF) humidity sensor is fabricated by coating tin disulfide (SnS2) nanosheets onto the surface of MF. The small diameter (~8 μm) and the long length (~5 mm) of the MF promise strong interaction between guiding light and SnS2. Thus, a small variation in the relative humidity (RH) will lead to a large change in optical transmitted power. A high RH sensitivity of 0.57 dB/%RH is therefore achieved. The response and recovery times are estimated to be 0.08 and 0.28 s, respectively. The high sensitivity and fast response speed enable our SnS2-MF sensor to monitor human breath in real time. |
| Databáze: | OpenAIRE |
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