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Triangular In0.53Ga0.47As-OI nMOSFETs with smooth (111)B side surfaces on Si have been successfully fabricated. Triangular shaped channels with bottom width down to 30 nm were formed by MOVPE growth on narrow InGaAs-OI fins. The formed (111)B surface was demonstrated to provide higher mobility compared with reference InGaAs-OI tri-gate (1.9×) as well as bulk (100) InGaAs nMOSFETs (1.6×), which is...
A seismic radiation emitted from the earth's crust is useful for predicting earthquakes. The electromagnetic (EM) wave in the Extremely Low Frequency (ELF) band have been observed at many places in Japan. In this paper, we propose the anomalous signal detection method based on HMM whose input vector is the amplitude density distribution of an EM wave. The amplitude density distribution is calculated...
This paper shows the denoising performance of the outer product expansion with non-linear filters for the background noise included in the extremely low frequency (ELF) electromagnetic (EM) waves. We have proposed novel source separation techniques based on an outer product expansion with non-linear filters. Some kinds of the algorithm for the outer product expansion and its effectiveness have been...
It is well known that electromagnetic (EM) waves are radiated from the Earth surface as precursor phenomena due to Earth-crustal movements such as earthquakes. Issues on anomalous signal detection and observation systems are widely investigated by researchers. Recent several researches in our study are reviewed in this paper.
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