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2015 ; 5
(ä): 18247
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The impact of natural modes in plasmonic imaging
#MMPMID26671455
Demetriadou A
Sci Rep
2015[Dec]; 5
(ä): 18247
PMID26671455
show ga
Plasmonic imaging is crucial for understanding cellular behaviours for biological
sciences, where is used to image and track organelles in cells, such as DNA and
virus molecules. Due to the fast dynamics of the intra-cellular processes, it is
essential to keep the cells under their native states (i.e. label-free),
establishing plasmonic imaging as one of the most powerful tools for studying
biological samples. In this article, a theoretical model is presented that
accurately predicts the properties of a plasmonic image, paving the route towards
the characterization of an imaged nano-object. It is shown that natural modes are
not only excited, but actually dominate the intensity and shape of the observed
plasmonic image. Hence, the proposed model explains the dynamics forming the
plasmonic image and can be used to extract spectroscopy information from current
plasmonic imaging techniques.