1,720,969 research outputs found
Simulation of the presence of blood vessels in the vicinity of a microwave ablation antenna
No full textSurface impedance of superconductive thin films as a function of frequency in microwave range
No full textA microwave broadband technique to measure the complex resistivity of HTS thin films
No full textWe propose a new broadband swept frequency technique to measure the complex resistivity of high Tc superconducting thin films in the microwave range (from a few GHz up to 50 GHz). A coaxial cable connects the sample to a vector network analyzer which performs reflection measurements; the film and the coaxial end are separated by a short section of circular waveguide. The absence of direct electrical contact between the sample and the coaxial core simplifies realization and avoids contact instability with large temperature variations. We provide an electromagnetic analysis of the coaxial to cylindrical transition (CCT) and find a closed form relation between the measured quantities and the film resistivity. Finally, we present some experimental results obtained for an YBa2Cu3O7-δ thin film using the described method
Two techniques for broadband measurements of the surface impedance of high critical temperature superconducting thin films
No full textStudio delle prestazioni di un nuovo tipo di antenna interstiziale per trattamenti di ablazione a microonde
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Effect of microwave radiation on Bacillus subtilis spores, Journal of applied microbiology
No full textTwo techniques for the broadband measurement of surface impedance of high critical temperature superconducting thin films
No full textDesign and Realization of a New Type of Interstitial Antenna for Ablation Therapies
No full textMicrowave ablation is a stand-alone therapy which is used to remove pathologic tissues by locally increasing the temperature up to 50 - 90 degrees C, for a short time (a few minutes). It is employed for the treatment of several cancer types, cardiac arrhythmia, and endometrium disorders. In this paper, a newly developed interstitial antenna for microwave ablation therapies is proposed, and its performances are studied both numerically and experimentally
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