Development of a Surface Plasmon Resonance n-dodecane Vapor Sensor

Aguirre, N. Muñoz; Perez, Laetitia; Colín, Jose Alfredo; Buenrostro-González, Eduardo

doi:10.3390/s7091954

Cited by 9 publications

(4 citation statements)

References 17 publications

(19 reference statements)

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“…The optical RI-based on-chip vapor sensors have been studied extensively for gas detection with different device configurations, including micro-ring resonators 10 – 13 , surface plasmon resonances (SPR) 14 , 15 , Fabry-Perot interferometers 12 , 16 – 18 , and photonic crystal cavities 19 – 24 . In these sensors, light interferes constructively at certain wavelength to increase the effective interaction length, which enables compact integration of vapor sensors on chip.…”

Section: Introductionmentioning

confidence: 99%

Optofluidic vapor sensing with free-space coupled 2D photonic crystal slabs

Liu

Wang

Biswas

et al. 2019

Sci Rep

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We report here a compact vapor sensor based on polymer coated two-dimensional (2D) defect-free photonic crystal slabs (PCS). The sensing mechanism is based on the resonance spectral shift associated with the Fano resonance mode in the PCS due to the vapor molecule adsorption and desorption induced changes in both polymer thickness and polymer refractive index (RI). Sensitivity due to RI and thickness change were theoretically investigated respectively. With three different thicknesses of OV-101 polymer coating, sensitivity and response time were experimentally evaluated for hexane and ethanol vapors. The polymer demonstrated roughly four times higher sensitivity towards the hexane vapor than ethanol vapor. The PCS sensor with thicker polymer coating showed higher sensitivity to both hexane and ethanol vapors but exhibiting longer response time.

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Section: Introductionmentioning

confidence: 99%

Optofluidic vapor sensing with free-space coupled 2D photonic crystal slabs

Liu

Wang

Biswas

et al. 2019

Sci Rep

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“…Because it is an optical phenomenon, it is inherently non-intrusive and amenable to in-line measurements. Applications of SPR are rapidly expanding, and there is already some precedent for analysis of light hydrocarbon gas mixtures. , In part because of the challenges noted above, however, SPR-based crude oil characterization has not been presented to date.…”

Section: Introductionmentioning

confidence: 99%

Surface Plasmon Resonance for Crude Oil Characterization

2015

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In this work crude oil characterization based on surface plasmon resonance is demonstrated. Oil characterization plays a crucial role in both the upstream and downstream oil industry. The application of SPR to these opaque, high index fluids is made possible here using infrared light (λ=1550 nm) for which crude oil is largely transparent, coupled through a highindex prism. Bitumen-toluene mixture tests show a measurement sensitivity of 74 o RIU -1 , and a limit of detection below 1% toluene. Seven crude oils from around the world are differentiated with refractive indices spanning 1.44 to 1.56, with a sensor limit of detection of 0.0006 RIU.These results indicate a significant potential for surface plasmon resonance as a non-intrusive, fast, and simple technique for crude oil characterization applicable to reservoirs, surface facilities and pipelines.

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“…IPA, dodecane and pentane are commonly used in industry and are considered as toxic pollutants to the environment. To better monitor the air quality, sensors for detecting these three analytes have been widely investigated. ,, In our work, we find the nanoporous TiO 2 material to exhibit good sensitivity to the three organic vapors and reliable self-cleaning capability.…”

Section: Introductionmentioning

confidence: 82%

Self-Cleaning Organic Vapor Sensor Based on a Nanoporous TiO₂ Interferometer

Liang

Kelly

Luo

et al. 2012

ACS Appl. Mater. Interfaces

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Porous thin films of TiO(2) are prepared and their use as chemical sensors for organic vapor analytes is investigated. Thin-film optical interference (Fabry-Perot) fringes in the reflectance spectrum are monitored using Reflectometric Interference Fourier Transform Spectroscopy (RIFTS). Three analytes are employed to probe the sensitivity of the porous TiO(2)-based sensors as a function of analyte vapor pressure: dodecane, isopropyl alcohol (IPA), and pentane. Measured lower limits of detection (3, 30, and 11, 000 ppmv for dodecane, IPA, and pentane, respectively) track the saturation vapor pressures (P(sat)) of the analytes (0.134, 45, and 513 Torr at 25°C for dodecane, IPA, and pentane, respectively); the analyte with the lowest value of P(sat) shows the lowest LLOD. Recovery of the sensor after a saturation dose of analyte is also dependent on P(sat): the sensor displays good recovery from pentane and IPA, and sluggish and incomplete recovery from dodecane. However, irradiation of the porous TiO(2) sensor with UV light in the presence of air accelerates recovery, and this process is attributed to photo-catalyzed oxidation of the analyte at the TiO(2) surface.

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Development of a Surface Plasmon Resonance n-dodecane Vapor Sensor

Cited by 9 publications

References 17 publications

Optofluidic vapor sensing with free-space coupled 2D photonic crystal slabs

Optofluidic vapor sensing with free-space coupled 2D photonic crystal slabs

Surface Plasmon Resonance for Crude Oil Characterization

Self-Cleaning Organic Vapor Sensor Based on a Nanoporous TiO₂ Interferometer

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Development of a Surface Plasmon Resonance n-dodecane Vapor Sensor

Cited by 9 publications

References 17 publications

Optofluidic vapor sensing with free-space coupled 2D photonic crystal slabs

Optofluidic vapor sensing with free-space coupled 2D photonic crystal slabs

Surface Plasmon Resonance for Crude Oil Characterization

Self-Cleaning Organic Vapor Sensor Based on a Nanoporous TiO2 Interferometer

Contact Info

Product

Resources

About

Self-Cleaning Organic Vapor Sensor Based on a Nanoporous TiO₂ Interferometer