Abstract
Unlike surface plasmon resonance sensors that detect integral changes to the optical properties of a sample, surface plasmon polariton-microscopy techniques can detect isolated nanoparticles in real-time through their plasmonic image, even of sub-wavelength dimensions. The feature characteristics and intensity of this plasmonic image are dependent on the nanoparticleʼs chemical composition and size. However, the lack of a theoretical model describing the principles forming a plasmonic image have hindered their understanding. In this article, we present a full-wave analytical model that describes electromagnetically the formation of the plasmonic image. Through our analytical model and numerical calculations, we show the properties of a plasmonic image from sub-wavelength to macroscopic particles of various chemical compositions.
Original language | English |
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Article number | 013041 |
Number of pages | 13 |
Journal | New Journal of Physics |
Volume | 17 |
DOIs | |
Publication status | Published - 20 Jan 2015 |
Keywords
- surface plasmon microscopy
- surface plasmon diffraction
- plasmonic image
- single particle spectroscopy
- nanoparticles
- surface plasmon polaritons