Relative Humidity Sensing Using a PMMA Doped Agarose Gel Microfiber

Irawati, N. and Rahman, H.A. and Moh. Yasin and Al-Askari, S. and Hamida, B.A. and Harith Ahmad and Sulaiman Wadi Harun (2017) Relative Humidity Sensing Using a PMMA Doped Agarose Gel Microfiber. Journal of Lightwave Technology, 35 (18). pp. 3940-3944.

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Abstract

Humidity sensors rely on humidity-induced refractive index change in the sensing material despite the sensor configuration. Polymer-based microwires can absorb water vapor molecules and detect humidity changes without the need of further coating. However, the sensitivity-simplicity trade-off is still a challenge. Sophisticated coating methods, complex resonating structures, and nanostructured films are reported as methods to enhance the device sensitivity. A simple technique, to build a high sensitivity RH sensor based on an agarose-doped Poly Methyl Methacrylate (PMMA) sensor head, is demonstrated. The waist diameter and uniform length of the PMMA doped agarose gel microfiber were measured to be 6 μm and 10 mm, respectively. The sensor can achieve power variation of up to 2.9 μW in a wide relative humidity range (50-80), and display linear response with a correlation coefficient of 98.29, sensitivity of 0.421 dB/RH, and resolution of 0.431RH. This agarose-based optical sensor provides a beneficial complement to the existing electrical ones, and will promote the employment of agarose in chemical sensing techniques. © 2017 IEEE.

Item Type: Article
Additional Information: cited By 31
Uncontrolled Keywords: Atmospheric humidity; Chemical sensors; Coatings; Economic and social effects; Esters; Refractive index; Sensitivity analysis, Agarose; Correlation coefficient; Induced refractive index; Micro-fiber; Relative humidity range; Resonating structures; Sensor configurations; Water vapor molecules, Humidity sensors
Divisions: Artikel Ilmiah > SCOPUS INDEXED JOURNAL
Creators:
CreatorsNIM
Irawati, N.UNSPECIFIED
Rahman, H.A.UNSPECIFIED
Moh. YasinUNSPECIFIED
Al-Askari, S.UNSPECIFIED
Hamida, B.A.UNSPECIFIED
Harith AhmadUNSPECIFIED
Sulaiman Wadi HarunUNSPECIFIED
Depositing User: Ika Rudianto
Last Modified: 31 Dec 2020 14:24
URI: http://repository.unair.ac.id/id/eprint/102389
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