Current collapse effects in an Al0.25Ga0.75N/GaN HFET have been investigated under pulsed bias conditions, and a detailed investigation of current responses to changes in drain or gate bias voltage (drain-lag and gate-lag, respectively) has been performed. Three components of transient current response to changes in drain and gate bias voltages are distinguished. Surface treatment using KOH etc...

We investigate the impact of surface defect density on the transport properties of molecular beam epitaxy grown InGaAs/AlInAs Quantum Cascade (QC) structures. We examine six parameters of the current–voltage (IV) characteristics of the QC mesas: turn-on voltage, turn-on current density, turn-on differential resistance, differential resistance, cut-off voltage, and cut-off current density. The a...

The effects of FC-4 cationic surfactant on electrodeposited Ag–PTFE composite coating using direct or pulsed currents were studied using scanning electron microscope (SEM), energy dispersive X-ray (EDS), optical microscope, and a linear tribometer. FC-4:PTFE in various ratios were added to a non-cyanide succinimide silver complex bath. Direct or pulsed current method was used at a constant curr...

In the reported article, we have simulated the pulsed high voltage direct current (DC) source and Blumlein transmission line by Multisimulation13 (National Instruments, Inc). In the generation of high voltage pulses at the optimum repetition rate, we have observed and investigated the waveform behavior of voltage in the Blumlein transmission line.We present the simulation results of pulsed high...

This paper characterizes phases present in thin Zr films at 773 K of substrate temperature. The effect of pulsed parameters such as pulse frequency, duty cycle and pulse power during the deposition of Zr film on Si(100) at the substrate temperature of 773 K has been studied. Formation of α-phase of zirconium was noticed with (001) preferred orientation at 773 K. Preferred orientation was found ...

In this paper we propose a new family of temperature distribution sensors based on the magnetostrictive delay line technique. An array of parallel conductors is set orthogonal to the delay line and used for pulsed current transmission. coil is set around the one end of the delay line in order to receive the magneto-elastic pulses. A platinum wire or a thermistor is electrically connected to the...

BACKGROUND Although many clinicians know about the reducing effects of the pulsed and low-dose modes for fluoroscopic radiation when performing interventional procedures, few studies have quantified the reduction of radiation-absorbed doses (RADs). The aim of this study is to compare how much the RADs from a fluoroscopy are reduced according to the C-arm fluoroscopic modes used. METHODS We me...

We have studied the orientation of neurite growth in the culture of embryonic Xenopus neurons in response to three types of extracellular electric fields: spatially uniform pulsed fields, focally applied steady (DC) fields, and focally applied pulsed fields. Under uniform pulsed fields, neurites showed a preferential orientation toward the cathode pole of the field in a manner similar to that p...