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Kim YC, Masson JF, Booksh KS. Single-crystal sapphire-fiber optic sensors based on surface plasmon resonance spectroscopy for in situ monitoring. Talanta. 2005;67(5):908-17doi: 10.1016/j.talanta.2005.04.022.
Kim, Y. C., Masson, J. F., & Booksh, K. S. (2005). Single-crystal sapphire-fiber optic sensors based on surface plasmon resonance spectroscopy for in situ monitoring. Talanta, 67(5), 908-17. https://doi.org/10.1016/j.talanta.2005.04.022
Kim, Yoon-Chang, et al. "Single-crystal sapphire-fiber optic sensors based on surface plasmon resonance spectroscopy for in situ monitoring." Talanta vol. 67,5 (2005): 908-17. doi: https://doi.org/10.1016/j.talanta.2005.04.022
Kim YC, Masson JF, Booksh KS. Single-crystal sapphire-fiber optic sensors based on surface plasmon resonance spectroscopy for in situ monitoring. Talanta. 2005 Oct 31;67(5):908-17. doi: 10.1016/j.talanta.2005.04.022. Epub 2005 Aug 24. PMID: 18970258.
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Talanta. 2005 Oct 31;67(5):908-17. doi: 10.1016/j.talanta.2005.04.022. Epub 2005 Aug 24.

Single-crystal sapphire-fiber optic sensors based on surface plasmon resonance spectroscopy for in situ monitoring.

Talanta

Yoon-Chang Kim, Jean-Francois Masson, Karl S Booksh

Affiliations

  1. Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287-1604, USA.

PMID: 18970258 DOI: 10.1016/j.talanta.2005.04.022

Abstract

Single-crystal sapphire-fiber optic sensors based on surface plasmon resonance (SPR) for refractive index (RI) measurements of aqueous and hydrothermal water solutions are described. Accurate measurement of RIs is essential to efficient operation and control of broad range of engineering processes. Some of these processes are carried out with harsh environments, such as high-temperature, high pressure, and chemical corrosion. These extreme physical conditions are proving a limiting factor in application of the conventional silica-based optical sensors. Single-crystal sapphire is an ideal material for sensor applications, where reliable performance is required in the extreme environment conditions. With regard to the liquid species detection, most applications of SPR sensors are designed to function near the refractive index of water (1.3330RI). The RI changes of aqueous solution can be easily monitored by silica-fiber (RI, 1.4601 at 550nm) based SPR sensor. However, the sapphire waveguide has a prohibitively high RI (1.7708 at 546nm) for unmodified monitoring of the RI changes of aqueous solutions. For that purpose, a practical SPR probe geometry has been applied to the ability to tune the SPR coupling wavelength/angle pair with sapphire-fiber based SPR probe.

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