Sensitivity Enhancement

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Ibrahim Abdulhalim - One of the best experts on this subject based on the ideXlab platform.

  • Sensitivity Enhancement methods for surface plasmon sensors
    Laser & Photonics Reviews, 2011
    Co-Authors: Atef Shalabney, Ibrahim Abdulhalim
    Abstract:

    Surface plasmon resonance (SPR) sensors have been a mature technology for more than two decades now, however, recent investigations show continuous Enhancement of their Sensitivity and their lower detection limit. Together with the recent investigations in localized SPR phenomena, extraordinary optical transmission through nanoapertures in metals, and surface-enhanced spectroscopies, drastic developments are expected to revolutionize the field of optical biosensing. Sensitivity-Enhancement (SE) techniques are reviewed focusing both on the physical transduction mechanisms and the system performance. In the majority of cases the SE is associated with the Enhancement of the electromagnetic field overlap integral describing the interaction energy within the analyte. Other important mechanisms are the interaction between plasmons and excitons and between the analyte molecules and the metal surface. The lower detection limit can be reduced significantly if systems with high signal-to-noise ratio are used such as common-path interferometry, ellipsometry or polarimetry systems.

  • SensitivityEnhancement methods for surface plasmon sensors
    Laser & Photonics Reviews, 2011
    Co-Authors: Atef Shalabney, Ibrahim Abdulhalim
    Abstract:

    Surface plasmon resonance (SPR) sensors have been a mature technology for more than two decades now, however, recent investigations show continuous Enhancement of their Sensitivity and their lower detection limit. Together with the recent investigations in localized SPR phenomena, extraordinary optical transmission through nanoapertures in metals, and surface-enhanced spectroscopies, drastic developments are expected to revolutionize the field of optical biosensing. Sensitivity-Enhancement (SE) techniques are reviewed focusing both on the physical transduction mechanisms and the system performance. In the majority of cases the SE is associated with the Enhancement of the electromagnetic field overlap integral describing the interaction energy within the analyte. Other important mechanisms are the interaction between plasmons and excitons and between the analyte molecules and the metal surface. The lower detection limit can be reduced significantly if systems with high signal-to-noise ratio are used such as common-path interferometry, ellipsometry or polarimetry systems.

  • electromagnetic fields distribution in multilayer thin film structures and the origin of Sensitivity Enhancement in surface plasmon resonance sensors
    Sensors and Actuators A-physical, 2010
    Co-Authors: Atef Shalabney, Ibrahim Abdulhalim
    Abstract:

    Abstract The performance of surface plasmon resonance (SPR) sensors depends on the design parameters. An algorithm for calculating the electromagnetic fields distribution in multilayer structure is developed relying on Abeles matrices method for wave propagation in isotropic stratified media. The correlation between field Enhancement and Sensitivity Enhancement is examined and found to agree with the overlap integral in the analyte region. This correlation was verified in the conventional SPR sensor based on Kretschmann configuration, and in the improved SPR sensor with high refractive index dielectric top layer for several cases, e.g. field Enhancement due to resonance, the Sensitivity dependence on the wavelength, the influence of prism refractive index on Sensitivity, and the effect of the layers materials and thicknesses.

Kenneth K. Y. Wong - One of the best experts on this subject based on the ideXlab platform.

Atef Shalabney - One of the best experts on this subject based on the ideXlab platform.

  • Sensitivity Enhancement methods for surface plasmon sensors
    Laser & Photonics Reviews, 2011
    Co-Authors: Atef Shalabney, Ibrahim Abdulhalim
    Abstract:

    Surface plasmon resonance (SPR) sensors have been a mature technology for more than two decades now, however, recent investigations show continuous Enhancement of their Sensitivity and their lower detection limit. Together with the recent investigations in localized SPR phenomena, extraordinary optical transmission through nanoapertures in metals, and surface-enhanced spectroscopies, drastic developments are expected to revolutionize the field of optical biosensing. Sensitivity-Enhancement (SE) techniques are reviewed focusing both on the physical transduction mechanisms and the system performance. In the majority of cases the SE is associated with the Enhancement of the electromagnetic field overlap integral describing the interaction energy within the analyte. Other important mechanisms are the interaction between plasmons and excitons and between the analyte molecules and the metal surface. The lower detection limit can be reduced significantly if systems with high signal-to-noise ratio are used such as common-path interferometry, ellipsometry or polarimetry systems.

  • SensitivityEnhancement methods for surface plasmon sensors
    Laser & Photonics Reviews, 2011
    Co-Authors: Atef Shalabney, Ibrahim Abdulhalim
    Abstract:

    Surface plasmon resonance (SPR) sensors have been a mature technology for more than two decades now, however, recent investigations show continuous Enhancement of their Sensitivity and their lower detection limit. Together with the recent investigations in localized SPR phenomena, extraordinary optical transmission through nanoapertures in metals, and surface-enhanced spectroscopies, drastic developments are expected to revolutionize the field of optical biosensing. Sensitivity-Enhancement (SE) techniques are reviewed focusing both on the physical transduction mechanisms and the system performance. In the majority of cases the SE is associated with the Enhancement of the electromagnetic field overlap integral describing the interaction energy within the analyte. Other important mechanisms are the interaction between plasmons and excitons and between the analyte molecules and the metal surface. The lower detection limit can be reduced significantly if systems with high signal-to-noise ratio are used such as common-path interferometry, ellipsometry or polarimetry systems.

  • electromagnetic fields distribution in multilayer thin film structures and the origin of Sensitivity Enhancement in surface plasmon resonance sensors
    Sensors and Actuators A-physical, 2010
    Co-Authors: Atef Shalabney, Ibrahim Abdulhalim
    Abstract:

    Abstract The performance of surface plasmon resonance (SPR) sensors depends on the design parameters. An algorithm for calculating the electromagnetic fields distribution in multilayer structure is developed relying on Abeles matrices method for wave propagation in isotropic stratified media. The correlation between field Enhancement and Sensitivity Enhancement is examined and found to agree with the overlap integral in the analyte region. This correlation was verified in the conventional SPR sensor based on Kretschmann configuration, and in the improved SPR sensor with high refractive index dielectric top layer for several cases, e.g. field Enhancement due to resonance, the Sensitivity dependence on the wavelength, the influence of prism refractive index on Sensitivity, and the effect of the layers materials and thicknesses.

Jiqiang Kang - One of the best experts on this subject based on the ideXlab platform.

Xie Wang - One of the best experts on this subject based on the ideXlab platform.