Resolution Enhancement of Plasmonic Sensors by Metal‐Insulator‐Metal Structures

DOI Web Site Web Site 3 Citations 35 References
  • Siham Refki
    Optics and Photonics Center Moroccan Foundation for Advanced Science Innovation and Research (MAScIR) Rabat 10100 Morocco
  • Shinji Hayashi
    Optics and Photonics Center Moroccan Foundation for Advanced Science Innovation and Research (MAScIR) Rabat 10100 Morocco
  • Hidekazu Ishitobi
    Graduate School of Frontier Biosciences Osaka University 1–3 Yamadaoka Suita Osaka 565–0871 Japan
  • Dmitry V. Nesterenko
    Image Processing Systems Institute – Branch of the Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences Samara 443001 Russia
  • Anouar Rahmouni
    Optics and Photonics Center Moroccan Foundation for Advanced Science Innovation and Research (MAScIR) Rabat 10100 Morocco
  • Yasushi Inouye
    Graduate School of Frontier Biosciences Osaka University 1–3 Yamadaoka Suita Osaka 565–0871 Japan
  • Zouheir Sekkat
    Optics and Photonics Center Moroccan Foundation for Advanced Science Innovation and Research (MAScIR) Rabat 10100 Morocco

Search this article

Description

<jats:title>Abstract</jats:title><jats:p>Optical sensors based on surface plasmons have attracted much attention over the past decades owing to the wealth of applications in bio‐ and chemical and gas sensing. In surface plasmon resonance sensors, a single metal layer is commonly used, but its resolution is limited because of broad resonances. In this context, we have developed a sensor chip based on a stack of metals and a dielectric, e.g. a metal‐insulator‐metal structure, consisting of a thick insulator layer sandwiched by metal layers, that exhibits a sharp resonance due to the excitation of surface plasmon polaritons hybrid modes. We have performed both experiments and theoretical simulations to estimate the enhancement of the sensitivity of such a structure. By changing the refractive index of an aqueous solution of glucose on top of the sensor chip, we found that the use of a metal‐insulator‐metal structure improves the figure of merit of the sensor 7.5 times compared to that of a conventional surface plasmon resonance sensor chip.</jats:p>

Journal

Citations (3)*help

See more

References(35)*help

See more

Related Projects

See more

Details 詳細情報について

Report a problem

Back to top