Journal article
Excitation of fluorescent nanoparticles by channel plasmon polaritons propagating in V-grooves
NSE-Optofluidics Group, NanoSystemsEngineering Section, Department of Micro- and Nanotechnology, Technical University of Denmark1
NanoSystemsEngineering Section, Department of Micro- and Nanotechnology, Technical University of Denmark2
Department of Micro- and Nanotechnology, Technical University of Denmark3
Metamaterials, Department of Photonics Engineering, Technical University of Denmark4
Department of Photonics Engineering, Technical University of Denmark5
Recently, it has been proven that light can be squeezed into metallic channels with subwavelength lateral dimensions. Here, we present the study of the propagation of channel plasmon polaritons confined in gold V-grooves, filled with fluorescent particles. In this way, channel plasmon polaritons propagating in nonempty V-grooves can be characterized, as the propagation track can be directly visualized in the microscope.
We have found that beads with subwavelength diameters act as frequency converters for the propagating channel modes, resulting in larger propagation lengths. For micrometric-diameter beads, we show the possibility of individual excitation, what may have applications to develop very sensitive biosensors.
Language: | English |
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Publisher: | American Institute of Physics |
Year: | 2009 |
ISSN: | 10773118 and 00036951 |
Types: | Journal article |
DOI: | 10.1063/1.3262945 |
ORCIDs: | Kristensen, Anders |