Abstract
A Photon Scanning Tunneling Microscope (PSTM) with a distance control by electron tunneling is used to probe the localised surface plasmon fields of individual nanometric silver particles. The samples are conventionally thermally evaporated “island” films as well as regular particle arrays produced by an electron beam lithography based technique. In either case the strength and spatial distribution of the localised plasmon fields strongly depend on the excitation wavelengths. These results are interpreted by different individual resonance frequencies of different sample areas or individual particles. On regular arrays, consisting of particles with a smallest diameter of 80 nm, the PSTM maps represent the plasmon field strength spatially resolved for individual particles.
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© 1995 Springer Science+Business Media Dordrecht
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Krenn, J.R., Somitsch, D., Gotschy, W., Leitner, A., Aussenegg, F.R. (1995). Near Field Optical Investigations on Nanometric Silver Particles. In: Marti, O., Möller, R. (eds) Photons and Local Probes. NATO ASI Series, vol 300. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0423-4_15
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DOI: https://doi.org/10.1007/978-94-011-0423-4_15
Publisher Name: Springer, Dordrecht
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