Fiber optic hydrogen sulfide gas sensors utilizing ZnO thin film/ZnO nanoparticles: A comparison of surface plasmon resonance and lossy mode resonance

Usha, Sruthi P.; Mishra, Satyendra; Gupta, Banshi D.

doi:10.1016/j.snb.2015.04.108

Cited by 148 publications

(75 citation statements)

References 41 publications

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“…Currently, sensors for monitoring trace gases are imported from other countries and are highly costly. As per current literature, ZnO thin film-based gas sensors show promising results as sensors for atmospheric gases [5,[15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 57%

Al-Sn doped ZnO thin film nanosensor for monitoring NO₂ concentration

Sharma¹,

William²,

Thiruramanathan³

et al. 2017

Journal of Taibah University for Science

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The metal oxide semiconductor gas sensor technology is robust and has quick response times. In this work, aluminium and tin codoped zinc oxide (ASZO) thin films were synthesized by a sol-gel dip-coating process as sensors for the greenhouse gas nitrogen dioxide (NO 2). The prepared ASZO thin films were characterized using such techniques as X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM) and photoluminescence (PL) emission studies in order to analyze the elemental confirmation, particle size, surface roughness and optical emission properties, respectively. The XRD data reveals the hexagonal structure of ASZO and that the preferential orientation is along 2θ = 36.19 •. SEM images of the ASZO thin film exhibit rod-like formations of ASZO on the substrate. The ASZO films show enhanced sensing behaviour, sensing NO 2 gas even at 2 ppm at an operating temperature of 170 • C. The response and recovery times were determined to be 30 and 20 s, respectively.

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Section: Introductionmentioning

confidence: 57%

Al-Sn doped ZnO thin film nanosensor for monitoring NO₂ concentration

Sharma¹,

William²,

Thiruramanathan³

et al. 2017

Journal of Taibah University for Science

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“…angles approaching 90º [5]. This explains why most of the experimental work on LMRs uses optical fibre instead of the Kretschmann-Raether configuration [7,[10][11][12][13][14][15]. With this last configuration, it is very difficult to impinge light at nearly 90º.…”

mentioning

confidence: 99%

Generation of Lossy Mode Resonances in Planar Waveguides Toward Development of Humidity Sensors

Fuentes

Corres

Matı́as

et al. 2019

J. Lightwave Technol.

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Lossy mode resonances (LMRs) are typically obtained with optical fibre. The Kretschmann configuration is an alternative but LMRs are generated with angles approaching grazing incidence. In this work, a new setup is explored, based on the lateral incidence of light on conventional planar waveguides such as glass slides or coverslips. Indium tin oxide was deposited onto both types of waveguides generating LMRs. The results of the simulations carried out agree well with the experimental results. As an example of the potential of this new and simple optical configuration, a humidity sensor with a sensitivity of 0.212 nm/%RH in the range from 65 to 90% of RH was developed, which expedites the development of other types of sensors already explored with LMR based optical fibre sensors.

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“…SPR based gas sensor using ZnO is widely used for sensing for both reductive and oxidative gases [72]. The key property of ZnO for gas sensing is the reversible interaction of its surface with the gas molecule due to covalent bonding or dipole-dipole interaction [86]. As a n-type semiconductor, ZnO has high level of defects to provide a good surface for gas molecule absorption.…”

Section: Zno For Gas Sensingmentioning

confidence: 99%

“…The reaction between H 2 S and ZnO gives off ZnS, SO 2 and H 2 O. The H 2 O formed has no effect on the sensing surface, but the formation of SO 2 changes the dielectric constant/refractive index at the ZnO sensing layer [86]. Hence, shifts in the resonance angle or resonance wavelength can be observed.…”

Section: Zno For Gas Sensingmentioning

confidence: 99%

ZnO for performance enhancement of surface plasmon resonance biosensor: a review

Mei

Menon

Hegde³

2020

Mater. Res. Express

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This paper reviews Kretschmann-based SPR sensor utilizing ZnO thin films and nanostructures for performance enhancement. The advancement in surface plasmon resonance technology relies on low-cost, high sensitivity and high selectivity sensor. Metal oxide has been incorporated in SPR sensor to be used for detection of biological and chemical compounds. ZnO as one of the metal oxides is an attractive material due to its unique physical and optical properties. Numerous techniques for fabrication and characterization of ZnO on SPR gold substrate have been studied. The mechanism for gas and biomolecules detection depends on their interaction with ZnO surface, which is mainly attributed to the high isoelectric point of ZnO. There are several types of ZnO nanostructures which have been employed for SPR application based on the Kretschmann configuration. In future, the thin film and nanostructures of ZnO have potential applications for miniature design, robust, high sensitivity, and low-cost portable type of SPR biosensor to be used for on-site testing in real-time and label-free manner.

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Fiber optic hydrogen sulfide gas sensors utilizing ZnO thin film/ZnO nanoparticles: A comparison of surface plasmon resonance and lossy mode resonance

Cited by 148 publications

References 41 publications

Al-Sn doped ZnO thin film nanosensor for monitoring NO₂ concentration

Al-Sn doped ZnO thin film nanosensor for monitoring NO₂ concentration

Generation of Lossy Mode Resonances in Planar Waveguides Toward Development of Humidity Sensors

ZnO for performance enhancement of surface plasmon resonance biosensor: a review

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Fiber optic hydrogen sulfide gas sensors utilizing ZnO thin film/ZnO nanoparticles: A comparison of surface plasmon resonance and lossy mode resonance

Cited by 148 publications

References 41 publications

Al-Sn doped ZnO thin film nanosensor for monitoring NO2 concentration

Al-Sn doped ZnO thin film nanosensor for monitoring NO2 concentration

Generation of Lossy Mode Resonances in Planar Waveguides Toward Development of Humidity Sensors

ZnO for performance enhancement of surface plasmon resonance biosensor: a review

Contact Info

Product

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Al-Sn doped ZnO thin film nanosensor for monitoring NO₂ concentration

Al-Sn doped ZnO thin film nanosensor for monitoring NO₂ concentration