Publication Date:
2017-11-22
Description:
Author(s): Emilie Sakat, Valeria Giliberti, Monica Bollani, Andrea Notargiacomo, Marialilia Pea, Marco Finazzi, Giovanni Pellegrini, Jean-Paul Hugonin, Alexander Weber-Bargioni, Mauro Melli, Simone Sassolini, Stefano Cabrini, Paolo Biagioni, Michele Ortolani, and Leonetta Baldassarre Although scattering-type scanning near-field infrared microscopy can provide access to key parameters of nanomaterials, presently it is performed with unoptimized gold-coated cantilever probes, mainly due to their commercial availability. This work demonstrates that heavily doped germanium, with a midinfrared plasma frequency, is also a good choice for such probes. The peculiarities of IR plasmonic resonances of doped semiconductor nanostructures are highlighted with the aid of multiple-scattering models. This development in coating-free monolithic tips for scanning-probe microscopy could facilitate a lot of nanotechnology research, particularly in plasmonics and photonics. [Phys. Rev. Applied 8, 054042] Published Tue Nov 21, 2017
Electronic ISSN:
2331-7019
Topics:
Physics
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