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We proposed a novel laser-driven short-term heating angioplasty to realize restenosis-suppressive angioplasty for peripheral artery disease. In this study, we investigated the chronic intimal hyperplasia formation after the short-term heating dilatation in vivo, as well as the thermal damage calculation on arterial smooth muscle cells (SMCs). The prototype short-term heating balloon catheter with...
We investigated the influences on the smooth muscle cells of temporally heated arterial walls in both ex vivo and in vitro study to determine the optimum heat parameter of novel short-term thermal angioplasty, Photo-thermo Dynamic Balloon Angioplasty (PTDBA). Arterial heating dilatation was performed by the prototype PTDBA balloon ex vivo. We found that the smooth muscle cells in the vessel wall were...
The ruggedness of SiCGT (SiC Commutated Gate Turn-off Thyristor) was investigated. The SiCGT was confirmed to operate at over 1200°C, a higher temperature than Si device's destruction temperature. The SiCGT endured a large current of over 2000A (2470A/cm2) per one chip. Positive temperature coefficient resistor behavior could be found during the destruction of SiCGT, which was different from the destruction...
A black surface was created using electrostatic flocking with polyacrylonitrile (PAN) carbon flock fibers. Reflectance of diffused reflection for ultraviolet, visible, and near-infrared rays was measured using the created flocked surfaces. The resultant surface exhibits extremely low reflectance values. Furthermore, the authors measured thermal emissivity of carbon-fiber flocked surfaces. A sample...
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