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Due to the miniaturization and complication of the size of electronic devices, it is recently required to maximize the inspection performance especially in precision. It is especially difficult to detect very small defects of the small electronic devices in size. In addition to these requirements, the performances of the inspection in cost and speed should be realized. For realizing these subjects...
Energy harvesting has been studied as a candidate for powering next generation wireless sensor networks. The technologies that can harvest electric power from ambient energy sources include solar, vibration, heat and wind. However, sensor nodes powered by energy harvesting devices cannot always communicate with other nodes because the energy harvesting devices cannot provide a stable supply power...
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