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All-Optical Graphene Oxide Humidity Sensors
The optical characteristics of graphene oxide (GO) were explored to design and fabricate a GO-based optical humidity sensor. GO film was coated onto a SU8 polymer channel waveguide using the drop-casting technique. The proposed sensor shows a high TE-mode absorption at 1550 nm. Due to the dependence...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4299113/ https://www.ncbi.nlm.nih.gov/pubmed/25526358 http://dx.doi.org/10.3390/s141224329 |
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author | Lim, Weng Hong Yap, Yuen Kiat Chong, Wu Yi Ahmad, Harith |
author_facet | Lim, Weng Hong Yap, Yuen Kiat Chong, Wu Yi Ahmad, Harith |
author_sort | Lim, Weng Hong |
collection | PubMed |
description | The optical characteristics of graphene oxide (GO) were explored to design and fabricate a GO-based optical humidity sensor. GO film was coated onto a SU8 polymer channel waveguide using the drop-casting technique. The proposed sensor shows a high TE-mode absorption at 1550 nm. Due to the dependence of the dielectric properties of the GO film on water content, this high TE-mode absorption decreases when the ambient relative humidity increases. The proposed sensor shows a rapid response (<1 s) to periodically interrupted humid air flow. The transmission of the proposed sensor shows a linear response of 0.553 dB/% RH in the range of 60% to 100% RH. |
format | Online Article Text |
id | pubmed-4299113 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-42991132015-01-26 All-Optical Graphene Oxide Humidity Sensors Lim, Weng Hong Yap, Yuen Kiat Chong, Wu Yi Ahmad, Harith Sensors (Basel) Article The optical characteristics of graphene oxide (GO) were explored to design and fabricate a GO-based optical humidity sensor. GO film was coated onto a SU8 polymer channel waveguide using the drop-casting technique. The proposed sensor shows a high TE-mode absorption at 1550 nm. Due to the dependence of the dielectric properties of the GO film on water content, this high TE-mode absorption decreases when the ambient relative humidity increases. The proposed sensor shows a rapid response (<1 s) to periodically interrupted humid air flow. The transmission of the proposed sensor shows a linear response of 0.553 dB/% RH in the range of 60% to 100% RH. MDPI 2014-12-17 /pmc/articles/PMC4299113/ /pubmed/25526358 http://dx.doi.org/10.3390/s141224329 Text en © 2014 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 license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Lim, Weng Hong Yap, Yuen Kiat Chong, Wu Yi Ahmad, Harith All-Optical Graphene Oxide Humidity Sensors |
title | All-Optical Graphene Oxide Humidity Sensors |
title_full | All-Optical Graphene Oxide Humidity Sensors |
title_fullStr | All-Optical Graphene Oxide Humidity Sensors |
title_full_unstemmed | All-Optical Graphene Oxide Humidity Sensors |
title_short | All-Optical Graphene Oxide Humidity Sensors |
title_sort | all-optical graphene oxide humidity sensors |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4299113/ https://www.ncbi.nlm.nih.gov/pubmed/25526358 http://dx.doi.org/10.3390/s141224329 |
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