Sapphire temperature sensor coal gasifier field test

Huang, Zhengyu; Pickrell, Gary; Xu, Juntao; Wang, Yongxin; Zhang, Yibing; Wang, Anbo

doi:10.1117/12.577619

Cited by 7 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fs approach on the other hand can easily produce high ∆ n FBGs in PSC fibers that are resistant to hydrogen induced loss [ 7 , 62 ]. Natural gas turbines, entrained coal gasifier or aerospace turbine monitoring require sensors that can operate at temperatures above 1600 °C [ 63 ]. While fs-vis and fs-UV FBGs have been fabricated for some sensing and fiber laser applications, they have not been generally fabricated for sensing in high temperature environments.…”

Section: Applications Of Fs-laser Induced Fbgs For Sensingmentioning

confidence: 99%

“…Existing sapphire fiber sensors are largely Fabry-Perot structures created within the fiber that produce a broadband interferometric signal that varies with temperature [ 63 ]. These devices can be used as point sensors but cannot be used effectively for distributed sensing i.e., measuring at different location along the fiber.…”

Section: Applications Of Fs-laser Induced Fbgs For Sensingmentioning

confidence: 99%

See 1 more Smart Citation

Extreme Environment Sensing Using Femtosecond Laser-Inscribed Fiber Bragg Gratings

Mihailov

Grobnic

Hnatovsky

et al. 2017

Sensors

108

View full text Add to dashboard Cite

The femtosecond laser-induced fiber Bragg grating is an effective sensor technology that can be deployed in harsh environments. Depending on the optical fiber chosen and the inscription parameters that are used, devices suitable for high temperature, pressure, ionizing radiation and strain sensor applications are possible. Such devices are appropriate for aerospace or energy production applications where there is a need for components, instrumentation and controls that can function in harsh environments. This paper will present a review of some of the more recent developments in this field.

show abstract

Section: Applications Of Fs-laser Induced Fbgs For Sensingmentioning

confidence: 99%

Section: Applications Of Fs-laser Induced Fbgs For Sensingmentioning

confidence: 99%

Extreme Environment Sensing Using Femtosecond Laser-Inscribed Fiber Bragg Gratings

Mihailov

Grobnic

Hnatovsky

et al. 2017

Sensors

108

View full text Add to dashboard Cite

show abstract

“…Examples include the probing of catalytic reactions on a hot support 3,4 and the monitoring of combustion products in gas turbines 5,6 and coal gasifiers. 7 The perceived susceptibility of Ag to oxidation further adds to the challenge of the utility of Ag NPs for high-temperature SERS.…”

Section: Introductionmentioning

confidence: 99%

Thermally annealed Ag nanoparticles on anodized aluminium oxide for SERS sensing

et al. 2013

View full text Add to dashboard Cite

In this paper we report a study of novel thermally stable surface enhanced Raman scattering (SERS) substrates consisting of Ag nanoparticles immobilized on an anodized aluminum oxide (AAO) support.The morphological and chemical characteristics and the SERS activity of the Ag nanoparticles before and after the thermal treatment were evaluated using SEM, XPS, UV-vis and Raman spectroscopy. Our results show that the nanoporous surface of AAO significantly hinders the fusion of Ag nanoparticles to single large particles at up to 400 uC, preserving high SERS enhancement. XPS and SERS results indicate that exposure to high temperatures efficiently 'cleanses' the surface from citrate remnants, opening more binding sites for analytes on Ag nanoparticles. In addition, thermal decomposition of silver oxide occurs at 400 uC, ensuring a pure metallic surface and further enhancing SERS activity.

show abstract

“…These properties make single-crystal sapphire an ideal candidate for optical sensors that could operate in harsh environments. Homogeneous sapphire temperature sensors have been shown to operate with good reliability [ 10 , 11 , 12 ]. Pure sapphire melts at over 2050 °C, and thin sapphire optical fibers have exhibited the ability to resist plastic deformation at temperatures over 1650 °C [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Adhesive-Free Bonding of Monolithic Sapphire for Pressure Sensing in Extreme Environments

2018

Sensors

View full text Add to dashboard Cite

This paper presents a monolithic sapphire pressure sensor that is constructed from two commercially available sapphire wafers through a combination of reactive-ion etching and wafer bonding. A Fabry–Perot (FP) cavity is sealed fully between the adhesive-free bonded sapphire wafers and thus acts as a pressure transducer. A combination of standard silica fiber, bonded sapphire wafers and free-space optics is proposed to couple the optical signal to the FP cavity of the sensor. The pressure in the FP cavity is measured by applying both white-light interferometry and diaphragm deflection theory over a range of 0.03 to 3.45 MPa at room temperature. With an all-sapphire configuration, the adhesive-free bonded sapphire sensor is expected to be suitable for in-situ pressure measurements in extreme harsh environments.

show abstract

Sapphire temperature sensor coal gasifier field test

Cited by 7 publications

References 0 publications

Extreme Environment Sensing Using Femtosecond Laser-Inscribed Fiber Bragg Gratings

Extreme Environment Sensing Using Femtosecond Laser-Inscribed Fiber Bragg Gratings

Thermally annealed Ag nanoparticles on anodized aluminium oxide for SERS sensing

Adhesive-Free Bonding of Monolithic Sapphire for Pressure Sensing in Extreme Environments

Contact Info

Product

Resources

About