Humidity sensor based on microfiber resonator with reduced graphene oxide

Ahmad, Harith; Rahman, Mohammad Tariqur; Sakeh, S.N.A.; Razak, M.Z.A.; Zulkifli, Mohd Zamani

doi:10.1016/j.ijleo.2015.11.184

Cited by 41 publications

(14 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, researchers have been working to increase the sensitivity of the microfiber humidity sensor by coating the microfiber with humidity sensitive materials such as graphene 13 and gelatin. 7 In the present study, deposited TiO 2 has been chosen as a coating for MKRs, because it is very sensitive to humidity and it displays a fast adsorption ability.…”

mentioning

confidence: 99%

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

Faruki¹,

Razak²,

Azzuhri³

et al. 2016

mat express

View full text Add to dashboard Cite

In this study, the sensitivity and the linearity of the un-coated and TiO 2 -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 TiO 2 nanoparticle coating on the MKR. The TiO 2 -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.

show abstract

mentioning

confidence: 99%

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

Faruki¹,

Razak²,

Azzuhri³

et al. 2016

mat express

View full text Add to dashboard Cite

show abstract

“…Meanwhile, coated tapered fiber with MWCNTs slurry produced a higher sensitivity of 5.17 μW/% compared to 3.811 μW/% for bare tapered fiber, when the humidity varies from 45% to 80%. The performance of the proposed works showed better results from works reported in [18] which the proposed sensor sensed the humidity changes from 30% to 50%, with simpler coating material preparation and require minimum handling. …”

Section: Resultsmentioning

confidence: 81%

“…Recently Ahmad et al, [18] demonstrated a 4.04 m tapered single mode fiber loop resonator (MLR) with a diameter of 3.4 mm coated with reduced graphene oxide (rGO) as the optical humidity sensor. The optical humidity sensor works within humidity range from 30% to 50% and they reported sensitivity improvement for coated tapered fiber.…”

Section: Introductionmentioning

confidence: 99%

Optical Humidity Sensor Based on Tapered Fiber with Multi-walled Carbon Nanotubes Slurry

Mohamed

Irawati

Ahmad

et al. 2017

IJEECS

View full text Add to dashboard Cite

show abstract

“…A few years later, Ahmad et al introduced a RH sensor, which was formed by a MLR with and without reduced Graphene oxide coating. The experiment results showed that the proposed sensor with reduced graphene oxide (rGO) had a linear sensitivity of 0.0537 nm/%RH with RH in the range of 30% to 50%RH, while the sensor without rGO had a linear sensitivity of 0.0316 nm/%RH across the same range.…”

Section: Measurement Methodsmentioning

confidence: 99%

Research Advances in Microfiber Humidity Sensors

Peng

Zhao

Chen

et al. 2018

Small

100

View full text Add to dashboard Cite

An overview of the numerous latest research in microfiber humidity sensors is carried out with a specific focus on measurement methods, humidity sensitive materials, probe structures, and sensing properties of different sensors. First, five mainstream measurement structures, including taper, fiber grating, coupler, resonator, and interferometer are reviewed. It is concluded that these measurement structures sense the physicochemical property variations of microfibers or sensitive films and exhibit the change of optical signal when exposed to environment. Second, the basic preparation methods, humidity‐sensing properties, and their advantages and disadvantages as humidity sensitive material are addressed. Then, the advantages and disadvantages of all the above sensing structures are also discussed and compared. Finally, the main existing problems and potential solutions of microfiber humidity sensors are pointed out.

show abstract

Humidity sensor based on microfiber resonator with reduced graphene oxide

Cited by 41 publications

References 12 publications

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

Optical Humidity Sensor Based on Tapered Fiber with Multi-walled Carbon Nanotubes Slurry

Research Advances in Microfiber Humidity Sensors

Contact Info

Product

Resources

About

Humidity sensor based on microfiber resonator with reduced graphene oxide

Cited by 41 publications

References 12 publications

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

Optical Humidity Sensor Based on Tapered Fiber with Multi-walled Carbon Nanotubes Slurry

Research Advances in Microfiber Humidity Sensors

Contact Info

Product

Resources

About

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