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Effect of titanium dioxide (TiO2) nanoparticle coating on the detection performance of microfiber knot resonator sensors for relative humidity measurement

Effect of titanium dioxide (TiO2) nanoparticle coating on the detection performance of microfiber knot resonator sensors for relative humidity measurement
Effect of titanium dioxide (TiO2) nanoparticle coating on the detection performance of microfiber knot resonator sensors for relative humidity measurement
In this study, the sensitivity and the linearity of the un-coated and TiO2-coated microfiber knot resonator (MKR) have been analyzed. The MKR is very sensitive to humidity changes since its refractive index is strongly humidity dependent. As a result, shifts occur in the resonance wavelength and there are also changes in output power. The un-coated MKR showed a sensitivity of 1.3 pm/%RH, in terms of the resonance wavelength, and a sensitivity of 0.0626 dB/%RH for the transmitted output power. The sensitivity increased greatly after the deposition of a porous TiO2 nanoparticle coating on the MKR. The TiO2-coated MKR showed an improved sensitivity of 2.5 pm/%RH, with respect to the resonance wavelength, and 0.0836 dB/%RH for the transmitted output power. This MKR sensor has the potential for use in a variety of humidity sensing applications.
2158-5849
501-508
Faruki, Md Jahid
af9b8c77-3a1c-4ade-ad25-dc4cdea4de9e
Ab Razak, Mohd Zulhakimi
ded4b519-e4dd-429a-a003-0c5d3a103b97
Azzuhri, Saaisal R.
8c1ca0f3-e74a-4fe7-90e7-b92a45149491
Rahman, Muhummad Towfiqur
f9760d64-4e2b-4103-81b5-952ca9776e63
Khalifeh Soltanian, Mohammad Reza
a1c8afe7-966b-483c-a2aa-7df4e38243d3
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Rahman, B.M. Azizur
6687d7da-65fc-4cea-86b2-a4a3767bb9fe
Grattan, Kenneth T.V.
b76a010f-fcf9-4cac-bf15-3ec61b0dc182
De La Rue, Richard
43558a55-57d7-4ba6-a645-e38507ea1df7
Ahmad, Harith
a115362d-21a5-48c4-9cd5-85cc45630ced
Faruki, Md Jahid
af9b8c77-3a1c-4ade-ad25-dc4cdea4de9e
Ab Razak, Mohd Zulhakimi
ded4b519-e4dd-429a-a003-0c5d3a103b97
Azzuhri, Saaisal R.
8c1ca0f3-e74a-4fe7-90e7-b92a45149491
Rahman, Muhummad Towfiqur
f9760d64-4e2b-4103-81b5-952ca9776e63
Khalifeh Soltanian, Mohammad Reza
a1c8afe7-966b-483c-a2aa-7df4e38243d3
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Rahman, B.M. Azizur
6687d7da-65fc-4cea-86b2-a4a3767bb9fe
Grattan, Kenneth T.V.
b76a010f-fcf9-4cac-bf15-3ec61b0dc182
De La Rue, Richard
43558a55-57d7-4ba6-a645-e38507ea1df7
Ahmad, Harith
a115362d-21a5-48c4-9cd5-85cc45630ced

Faruki, Md Jahid, Ab Razak, Mohd Zulhakimi, Azzuhri, Saaisal R., Rahman, Muhummad Towfiqur, Khalifeh Soltanian, Mohammad Reza, Brambilla, Gilberto, Rahman, B.M. Azizur, Grattan, Kenneth T.V., De La Rue, Richard and Ahmad, Harith (2016) Effect of titanium dioxide (TiO2) nanoparticle coating on the detection performance of microfiber knot resonator sensors for relative humidity measurement. Materials Express, 6 (6), 501-508. (doi:10.1166/mex.2016.1342).

Record type: Article

Abstract

In this study, the sensitivity and the linearity of the un-coated and TiO2-coated microfiber knot resonator (MKR) have been analyzed. The MKR is very sensitive to humidity changes since its refractive index is strongly humidity dependent. As a result, shifts occur in the resonance wavelength and there are also changes in output power. The un-coated MKR showed a sensitivity of 1.3 pm/%RH, in terms of the resonance wavelength, and a sensitivity of 0.0626 dB/%RH for the transmitted output power. The sensitivity increased greatly after the deposition of a porous TiO2 nanoparticle coating on the MKR. The TiO2-coated MKR showed an improved sensitivity of 2.5 pm/%RH, with respect to the resonance wavelength, and 0.0836 dB/%RH for the transmitted output power. This MKR sensor has the potential for use in a variety of humidity sensing applications.

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More information

Accepted/In Press date: 29 September 2016
Published date: 1 December 2016
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 410599
URI: http://eprints.soton.ac.uk/id/eprint/410599
ISSN: 2158-5849
PURE UUID: a41c531e-d6ed-4bb5-ac24-919963cb18c2
ORCID for Gilberto Brambilla: ORCID iD orcid.org/0000-0002-5730-0499

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Date deposited: 12 Oct 2017 16:32
Last modified: 02 Apr 2022 01:38

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Contributors

Author: Md Jahid Faruki
Author: Mohd Zulhakimi Ab Razak
Author: Saaisal R. Azzuhri
Author: Muhummad Towfiqur Rahman
Author: Mohammad Reza Khalifeh Soltanian
Author: B.M. Azizur Rahman
Author: Kenneth T.V. Grattan
Author: Richard De La Rue
Author: Harith Ahmad

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