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Using absorption materials to reduce RF heating during MRI procedure is studied in this paper. Materials with different electromagnetic absorption characteristics are used to alter the EM and current distributions on the device. Consequently, the RF induced heating behaviors of external fixation devices can be reduced. Numerical and experimental studies are provided to demonstrate the potentials of...
When the transient electromagnetic (TEM) method is used in prospecting, primary excitation in a transient system can have any shape. This paper obtains the response of these waveforms by the time-domain approach, which approximates the energizing pulse as a superposition of step functions. We also used a new hankel transform filters made by F.N Kong to calculate the response of step waveform for in-loop...
We measured the complex conductivity of gold nano-films in microwave X-, Ka-band and terahertz band. The results obtained from the open-terminal method and spectroscopy technique are in good agreement with the reported ones. Different from the bulk metal, the nano-film's conductivity has some deviation from the Drude model though it may be suitable in narrow frequency range. We find film's surface...
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