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http://hdl.handle.net/10397/93968
Title: | In situ μ-printed optical fiber-tip CO₂ sensor using a photocrosslinkable poly(ionic liquid) | Authors: | Wu, J Yin, MJ Seefeldt, K Dani, A Guterman, R Yuan, J Zhang, AP Tam, HY |
Issue Date: | 15-Apr-2018 | Source: | Sensors and actuators. B, Chemical, 15 Apr. 2018, v. 259, p. 833-839 | Abstract: | Carbon dioxide (CO₂ ) sensors play important roles in our daily life and production activities. However, it remains a challenge to develop a tiny device with remote sensing capability for detection of CO₂ concentration and related parameters. Here we present a new optical fiber-tip CO₂ sensor for simultaneous measurement of CO₂ concentration and temperature. A photocrosslinkable poly(ionic liquid), i.e. poly(1-allyl-3-vinylimidazolium bromide) (PAVB), with selective CO₂ adsorption capability was synthesized to fabricate miniature sensors via an in situ optical μ-printing technology. We directly printed several micrometer-scale Fabry–Pérot interferometers (FPIs) on the end face of a multicore optical fiber using the PAVB and SU-8 epoxy, respectively. We have demonstrated that the PAVB FPI sensor can measure CO₂ concentration with a sensitivity up to ∼35 pm/% in a wide range of 0%–75%, and its rise and fall dynamic response times are about 6.1 and 8.0 min, respectively. Meanwhile, the SU-8 FPI sensor is able to measure temperature with a sensitivity 0.059 nm/°C. Such a tiny CO₂ sensor can remotely and simultaneously measure CO₂ concentration and temperature in very small spaces and is thus promising for many applications ranging from waste gas detection to food quality control. | Keywords: | Carbon dioxide sensor Optical fiber sensor Optical microfabrication Poly(ionic liquid) |
Publisher: | Elsevier | Journal: | Sensors and actuators. B, Chemical | ISSN: | 0925-4005 | EISSN: | 1873-3077 | DOI: | 10.1016/j.snb.2017.12.125 | Rights: | © 2017 Elsevier B.V. All rights reserved. © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. The following publication Wu, J., Yin, M. J., Seefeldt, K., Dani, A., Guterman, R., Yuan, J., ... & Tam, H. Y. (2018). In situ μ-printed optical fiber-tip CO2 sensor using a photocrosslinkable poly (ionic liquid). Sensors and Actuators B: Chemical, 259, 833-839 is available at https://doi.org/10.1016/j.snb.2017.12.125. |
Appears in Collections: | Journal/Magazine Article |
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