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We have fabricated TiN/AlN/TiN tunnel junctions with an epitaxial layer. The critical temperature of TiN can be changed in the range from 0.5 to 5.0K. Therefore, it is easy to set 5.0K as the target critical temperature. When a Superconducting Tunnel Junction (STJ) is operated as a photon detector, it is necessary to cool it to within 0.1K of the critical temperature in consideration of the noise...
In order to help an attendant who are pushing a conventional commercialized manual wheelchair in which a patient (an elderly or disabled person) is sitting in the wheelchair, in this study, we have been developing a novel power add-on unit (PAU) for attendant propelled wheelchair with sensorless speed control and power assistance. This development is based on the following three concept: to make our...
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