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We have developed a perpendicular-anisotropy magnetic tunnel junction (p-MTJ) stack with CoFeB free layer and Co/Pt multilayer based synthetic ferrimagnetic (SyF) pinned layer that withstand annealing at a temperature up to 420°C (that compatible with CMOS BEOL process) by controlling boron diffusion. We demonstrated the 10 nmφ p-MTJ with double CoFeB/MgO interface tolerable against 400°C annealing...
A silicon Mach-Zehnder modulator, which has side-wall-grating waveguide, is investigated. Using the fabricated device, 12.5-Gb/s operation was demonstrated. A modulation efficiency (VπL) of 0.29 V·cm was determined from the measured extinction ratio.
By using state-of-the-art printing technologies and functional inks, we have demonstrated organic nonvolatile flexible random-access-memory matrices with a nondestructive read-out capability and a time-continuous current output; these functionalities have not been simultaneously achieved even by silicon-based conventional memory. A memory cell comprising three transistors becomes possible with inkjet...
We have fabricated large-area, flexible pressure sensors using printed organic field-effect transistor (FET) active matrices. Polyimide precursors and silver nanoparticles are patterned on a polyimide film by using an inkjet printing system and cured at 180degC to form gate dielectric layers and electrodes for organic FETs, respectively. The channel layer of organic transistors is pentacene deposited...
The authors have been studying the control mechanism of the fetal heart rate using a spectral analysis method which has high accuracy and a short calculation time. They have shown by simulation that frequency components of heart rate variability can be obtained more accurately even if the heart rate data contained certain errors in measurement. They report here the result obtained by applying a similar...
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