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Functional timing analysis (FTA) emerges for better timing closure than static timing analysis (STA) by providing the true delay of the circuit as well as its input pattern. For Satisfiability(SAT)-based FTA, a search problem for circuit delay can be expressed by clauses corresponding to circuit consistency function (CCF) and timed characteristic function (TCF). In particular, the clause number tends...
53 attosecond X-ray pulses with photon energies up to 300 eV are generated using polarization gated CEP-stable two-cycle pulses around 1.8 μm and characterized using photoelectron streaking technique combined with the PROOF retrieval method.
The output torque of an interior permanent magnet synchronous motor (IPMSM) can be controlled within its allowable range using a pulse-width modulation (PWM) inverter. In this paper, the effect of the load torque on the iron losses of an IPMSM is studied by investigating three driving conditions, namely no-current, no-load and load conditions. The experimental data demonstrates that a torque increase...
Pulsed Infrared laser is well-known for its high spatial resolution and contact-free stimulation mode. In order to improve the current auditory brainstem implants (ABI), 980 nm-short-wavelength infrared light was applied to stimulate the cochlear nucleus of rats. Single neural activity from contralateral inferior colliculus was recorded during laser stimulation. Animal experimental results showed...
Forward phase-matched Brillouin optomechanical resonance, excited by a tapered fiber, in a graphene inner-deposited whispering-gallery-mode microfluidic cavity, is demonstrated for the first time. The generated Brillouin optomechanical modes with Q factor ∼ 47000 show extremely high sensitivity (200kHz/ppm) for absolute gas detection based on frequency variation, achieving a detection limit down to...
The worldwide first 100MHz dynamic oxide semiconductor RAM (DOSRAM) is successfully demonstrated using a new high-mobility crystalline In-Ga-Zn-O (IGZO) material. The new IGZO exhibits around two times carrier mobility of conventional IGZO, while still achieving an extremely low off-state leakage (Ioff) at ∼10−21A (zA) level. Attributed to DOSRAM performance improvement, 100MHz normally-off (Noff)...
An industrial Medium Voltage (MV) system usually consists of multiple power sources such as utility tie transformers and generators. These are normally low-resistance grounding as shown in Fig. 1. When a ground fault occurs at the generator stator, ground currents from its own neutral circuit and external power sources will flow into the fault and cause damages to the stator winding. The IEEE Generator...
An embedded 1 Mbit 2T1C gain-cell memory macro using indium-gallium-zinc oxide semiconductor FETs (OSFETs) with an extremely low off-state current of less than 1 zA (10−21 A) was fabricated. In the 2T1C gain cell, an OSFET for the write operation was stacked over a SiFET for the read operation. The 1 Mbit macro was fabricated using a combination of 60-nm OSFET and 65-nm CMOS processes. It achieves...
The worldwide first 100MHz dynamic oxide semiconductor RAM (DOSRAM) is successfully demonstrated using a new high-mobility crystalline In-Ga-Zn-O (IGZO) material. The new IGZO exhibits around two times carrier mobility of conventional IGZO, while still achieving an extremely low off-state leakage (Ioff) at ∼10−21A (zA) level. Attributed to DOSRAM performance improvement, 100MHz normally-off (Noff)...
This paper analyzes a potential configuration of ATSC 3.0 for delivering local services in a Single Frequency Network (SFN). This application is possible using Layered Division Multiplexing — Local Service Insertion (LDM-LSI). This technique uses the lower layer as the bearer of local services, injected well below the upper layer (A=19dB). The paper analyzes the bitrate requirements and mode configuration...
Infrared neural stimulation (INS) provides a contact free, high spatial resolution method to regulate neural activities. Due to photothermal effect, neurons which located in the beam path, could be depolarized by infrared light. How to keep the high efficiency of opto-thermal transduction in nerve tissue, and meanwhile increase the photon penetration depth in untargeted tissues is the key question...
An all-fiber graphene oxide (GO) based ‘FRET on Fiber’ concept is proposed and applied in biochemical detections. This method is of both good selectivity and high sensitivity, with detection limits of 1.2 nM, 1.3 μM and 1 pM, for metal ion, dopamine and single-stranded DNA (ssDNA), respectively.
A highly sensitive fiber-optic Fabry-Perot interferometric geophone (FFPG) with graphene coated PMMA membrane is proposed and demonstrated, where the graphene coating is used for enhancement of the mechanical strength of the membrane. It is found that the sensitivity of the FFPG is much higher than that of the conventional electrical geophone. Such a novel all-optical geophone with low cost, high...
The loop antenna is well known as a fundamental element that radiates a linearly polarized wave. Recently, some unique properties have been discussed for a loop antenna capable of radiating a circularly polarized wave (CPW) [1]-[4]. CPW radiation is obtained using two perturbation elements on the loop.
We demonstrate a graphene-alumina-graphene heterostructured semiconductor chip, on which THz plasmons are generated via backward phase-matched 2nd nonlinearity all-optically. The on-chip plasmons are effectively gate tunable, with photon-efficiency ∼10−4, and Q factor > 60.
Broadly-tunable pulse generation in cavity-free graphene random lasers is reported, with tunable pulsewidths across two orders-of-magnitude to less-than 900 ps, tunable repetition over three orders-of-magnitude up to 3 MHz, and 41-dB singly-polarized extinction ratio.
A photonic crystal split-beam cavity capable of optomechanical detection of magnetic torques from a nanomagnetic permalloy film is presented. The magnetic response of the magnetometer coupled to torsional mechanical vibrations is observed in ambient conditions.
We report a 600-fold peak power enhancement of pulsed distributed feedback fiber lasers with monolayer graphene Q-switching. The tunable graphene-DFB fiber laser demonstrates sub-MHz linewidth and sub-μs pulses simultaneously, approaching the transform limit.
Failures of geosynthetic reinforced soil slope (RSS) initiated by intense rainfall have been often reported recently. These incidents were likely to be the effect of strength reduction upon wetting for unsaturated fill. This paper proposes a practical approach to evaluate the probable erroneous in analysis that responsible for such failures. A case study for a collapsed highway RSS was conducted to...
A novel wideband filtering power divider based on coupled-lines and short-circuited stubs is proposed in this paper. By using multisection λ/4 coupled-lines with two short-circuited stubs placed in shunt with the input port of the power divider, the presented circuit can successfully realize wideband property and high frequency selectivity. In addition, two resistors are properly selected according...
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