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We propose a subdural electrode array guided by a φ 0.3 mm SMA guidewire for a minimally-invasive method of electrocorticogram recording. The measured electric characteristics show that the proposed electrodes are compatible with the application of electrocorticogram recording. Somatosensory evoked potential is measured by the proposed method in the animal test in vivo. The results confirm that the...
It is necessary for electrical insulation diagnosis to obtain information about the electric field distribution and the space charge distribution in insulation materials. We have investigated the measurement of nonuniform electric field vector distributions in liquid dielectrics using an original method based on electrooptic Kerr effect and CT method. We carried out the time series measurement of...
Physical properties on the surface have a close connection with adhesive strength, water -resistance, abrasion-resistance and so on. The properties are greatly influenced by the surface characteristics than the bulk one. In polymer materials, such as polyethylene (PE) and polypropylene (PP) widely used as an insulating material and a dielectric material, it is thought that the surface characteristics...
Trees in silicone rubber has been investigated using 2-D specimen. The tree is classified two, i.e. 1st and 2nd tree. The behaviors of these trees have been observed by changing the ratio of two components of silicone rubber. The 1st tree is usually linear but the bubble has been formed in the soften silicone rubber. When the 1st tree is round babble, it is difficult for the 2nd tree to start from...
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