The coaxial tip as a nano-antenna for scanning near-field microwave transmission microscopy |
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| Authors: | A. Kramer F. Keilmann B. Knoll R. Guckenberger |
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| Affiliation: | Max-Planck-Institut für Biochemie, 82152, Martinsried, Germany |
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| Abstract: | A novel scanning-probe setup is reported that maps the complex transmission of microwaves. Response to topographic features as small as 15 nm was observed. The sharpened coaxial probe tip serves as a microwave antenna and, at the same time, as a tunnel tip to warrant precise distance control by STM (scanning tunneling microscope) feedback. The instrument can be applied to map the microwave conductivity of, e.g. thin films or low-dimensional semiconductors. Consequences for the development of an infrared microscope are outlined. |
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| Keywords: | Scanning probe microscopy scanning near-field optical microscopy microwave microscopy infrared microscopy |
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