Paper
30 August 2006 Study the enhancement of near electro-magnetic field via plasmonic effects using finite-difference time-domain method and near-field scanning optical microscopy
C.-H. Huang, C.-Y. Lin, S.-J. Chen
Author Affiliations +
Abstract
In this study, we use the finite-difference time-domain (FDTD) method, the attenuated-total-reflection (ATR) fluorescent and the near field scanning optical microscopy (NSOM) to investigate into the enhancement of near electro-magnetic field via plasmonic effects. In order to enhance the near electro-magnetic (EM) field on the sensing surface, a metal particle layer is added under the Kretschmann configuration of the conventional surface plasmon resonance (SPR) sensor based on the attenuated-total-reflection method. The affiliation by the simulation and experimental results can help us to understand the mechanisms of surface plasmons and particle plasmons on the sensor surface, and the effects of the EM field enhancement are classified as the surface plasmon effect, particle plasmon effect, interparticle coupling effect, and gap mode effect. With the helps of the both techniques, we can understand more about the plasmonic effects in order to deign a novel ultrahigh-resolution plasmonic biosensor.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C.-H. Huang, C.-Y. Lin, and S.-J. Chen "Study the enhancement of near electro-magnetic field via plasmonic effects using finite-difference time-domain method and near-field scanning optical microscopy", Proc. SPIE 6323, Plasmonics: Metallic Nanostructures and their Optical Properties IV, 632310 (30 August 2006); https://doi.org/10.1117/12.682119
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KEYWORDS
Nanoparticles

Gold

Plasmonics

Particles

Dielectrics

Finite-difference time-domain method

Biosensors

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