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http://hdl.handle.net/10397/81610
Title: | Highly sensitive temperature and humidity sensor based on carbon nanotube-assisted mismatched single-mode fiber structure | Authors: | Yuan, W Qian, H Liu, Y Wang, Z Yu, C |
Issue Date: | 2019 | Source: | Micromachines, 2019, v. 10, no. 8, 521 | Abstract: | Here we report on a miniaturized optical interferometer in one fiber based on two mismatched nodes. The all-fiber structure shows stable performance of temperature and humidity sensing. For temperature sensing in large ranges, from 40 to 100 °C, the sensor has a sensitivity of 0.24 dB/°C, and the adjusted R-squared value of fitting result reaches 0.99461 which shows a reliable sensing result. With carbon nanotubes coating the surface of the fiber, the temperature sensitivity is enhanced from 0.24561 to 1.65282 dB/°C in a small region, and the performance of humidity sensing becomes more linear and applicable. The adjusted R-squared value of the linear fitting line for humidity sensing shows a dramatic increase from 0.71731 to 0.92278 after carbon nanotube coating, and the humidity sensitivity presents 0.02571 nm/%RH. | Keywords: | Carbon nanotube Fiber sensors Humidity Miniaturized interferometer Temperature |
Publisher: | Molecular Diversity Preservation International (MDPI) | Journal: | International journal of environmental research and public health | ISSN: | 2072-666X | DOI: | 10.3390/mi10080521 | Rights: | © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). The following publication Yuan W, Qian H, Liu Y, Wang Z, Yu C. Highly Sensitive Temperature and Humidity Sensor Based on Carbon Nanotube-Assisted Mismatched Single-Mode Fiber Structure. Micromachines. 2019; 10(8):521 is available at https://doi.org/10.3390/mi10080521 |
Appears in Collections: | Journal/Magazine Article |
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Yuan_Highly_sensitive_temperature.pdf | 3.92 MB | Adobe PDF | View/Open |
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