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Materials Imaging Mode In materials imaging mode, a microwave source is capacitively coupled to the resonant transmission line, with the open-ended coaxial probe at the other end of the transmission line. The boundary conditions at the probe tip are perturbed by the region of the sample near the probe center-conductor, allowing high-resolution imaging of sample properties, such as sheet resistance and dielectric constant. This is accomplished by monitoring resonant frequency shifts and changes in quality factor (Q) of the microscope resonator.
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