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Microfabricated Otto chip device for surface plasmon resonance-based optical sensing.

Eduardo Fontana, Jung-Mu Kim, Ignacio Llamas-Garro

    Applied Optics
    |November 13, 2015
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    Summary

    This study presents a novel Otto chip for surface plasmon resonance (SPR) sensing. This microfabricated device enables efficient SPR coupling for advanced gas and biosensing applications.

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    Area of Science:

    • Optoelectronics
    • Nanotechnology
    • Chemical Sensing

    Background:

    • Surface plasmon resonance (SPR) is a powerful optical sensing technique.
    • The Kretschmann configuration is commonly used for SPR sensor design.
    • The Otto configuration offers potential advantages but requires precise alignment.

    Purpose of the Study:

    • To report the microfabrication and characterization of an SPR sensor chip utilizing the Otto prism coupling configuration.
    • To demonstrate the suitability of the Otto configuration for gas and biosensing applications.

    Main Methods:

    • Microfabrication of a specialized Otto chip device.
    • Characterization of the fabricated chip for SPR coupling efficiency.
    • Evaluation of the chip's performance in gas sensing and biosensing contexts.

    Main Results:

    • Successful microfabrication of the Otto chip device.
    • Demonstration of efficient surface plasmon coupling using the Otto configuration.
    • Validation of the chip's potential for sensitive gas and biosensing.

    Conclusions:

    • The developed Otto chip is a viable alternative to Kretschmann-based SPR sensors.
    • This microfabricated device opens new avenues for high-performance SPR gas and biosensing.