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High on-currents (Ion) and low off-currents (Ioff) under low supply voltage are important for logic applications. A heavily doped InP source was introduced to demonstrate the existence of high Ion in InGaAs MOSFETs, and ID = 2.4 mA/μm at VD = 0.5 V was observed. GaAsSb source was introduced in InGaAs tunnel FET to realize low Ioff. Narrow channel body was found to be essential for steep sub-threshold...
We demonstrated a sub-50-nm InGaAs 5-nm/InP 5-nm MOSFET with an n-InP source on a Si substrate using a 5-nm Al2O3 dielectric. In the measurement of the fabricated device, the maximum drain current and the peak transconductance at VD = 0.5 V were 0.9 mA/µm and 0.8 mS/m, respectively. The threshold voltage was 0.09 V, and the drain-induced barrier lowering was 378 mV/V. From the channel length dependence,...
This paper considers energy saving of industrial machines using a simple S-curve motion trajectory, which consists of acceleration period, constant velocity period and deceleration period. The S-curve motion trajectory is widely used in industrial applications. We consider a typical dynamics of feed drive systems including inertia term, viscous friction term, Coulomb friction term and the back-EMF...
Many industrial machines are operated along a simple motion trajectory such as a trapezoidal or S-curve acceleration/deceleration trajectory. This paper presents a motion trajectory generation method that suppresses the residual vibrations of such machines. First, we consider a residual vibration problem for a gantry-type crane that is widely used in industrial factories. The dynamics of the crane...
The use of minimally invasive procedures for breast tumor diagnosis and treatment, such as needle biopsy and radiofrequency ablation (RFA), is steadily increasing. Accurate needle insertion requires solving the problems of tissue deformation and target displacement. In this study, we developed a robotic needle insertion method to improve the precision of diagnostic biopsy and RFA treatment. The mechanical...
Holography is an ideal 3D display technique, which shows us beautiful 3D images. It is hoped that 3D holo TV that is a 3D television system using holographic principle will be put to practical use. However, there are some difficulties to realize it. One of them is a capturing method under a natural light, because it required a laser light illumination in a dark room. In this paper, a new capturing...
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