Nanotechnology offers the promise of harnessing quantum properties not available in bulk phase. These desirable are highly dependent on size and composition. Generators that control these variables therefore essential for progress field. The spark discharge generator (SDG) is an outstanding aerosol route nanoparticle synthesis, which stands out due to its fast kinetics, scalability, high purity...

A new pulse capillary discharge driver with a laser-triggered main spark gap has been developed. The assembled CAPEX-U device consists of a Marx generator, of a pulse forming line, a gas-filled laser-triggered spark gap and a ceramic capillary. Its design was supported by mapping of electrostatic fields in the most exposed regions and by analysis of an equivalent circuit. Operation of the laser...

A correct prediction of the ignition process represents a fundamental pre-requisite for a successful CFD simulation of combustion SI engines. Ignition involves many scales, physical and chemical phenomena that need to be described in detail. Within this context, the authors developed a Lagrangian model that can be used to predict the first stages of the combustion process in SI engines, when th...

Wire electric discharge machine (WEDM) is spark erosion in unconventional machining technique to cut hard and the conductive material with a wire as an electrode. The blanking die material SKD 11 is a high carbon and high chromium tool steel with high hardness and high wearing resistance property. This tool steel has broad application in press tools and dies making industries. In this research ...

Vertical Interconnects In article number 2200838, Heiko O. Jacobs and co-workers demonstrate how gas ions metal particles leave a spark discharge generator in plasma jet to deposit on chip self-aligning manner. The charge float the insulating resist top of an oxide/metallization stack guide nanoparticles with surrounding air gap into interconnect openings form contact between semiconductor firs...

Abstract The prediction of a flame response to plasma assistance requires extensive knowledge discharge-induced kinetics. Detailed studies nanosecond discharges are common in N 2 /O and fresh combustible mixtures but still lacking burnt gases. To fill this gap, we define reference test case investigate the effects repetitively pulsed (NRP) placed recirculation zone lean (Φ = 0.8) CH 4 -air bluf...

Spark is a new promising platform for scalable data-parallel computation. It provides several high-level application programming interfaces (APIs) to perform parallel data aggregation. Since execution of parallel aggregation in Spark is inherently non-deterministic, a natural requirement for Spark programs is to give the same result for any execution on the same data set. We present PURESPARK, ...

Ca(+) sparks are vascular smooth muscle cell (VSMC) Ca(2+)-release events that are mediated by ryanodine receptors (RyR) and promote vasodilation by activating large-conductance Ca(2+)-activated potassium channels and inhibiting myogenic tone. We have previously reported that exposing rats to intermittent hypoxia (IH) to simulate sleep apnea augments myogenic tone in mesenteric arteries through...

The concept of minimum ignition energy (MIE) has traditionally formed the basis for studying ignition hazards of fuels. However, the viewpoint of ignition as a statistical phenomenon appears to be more consistent with the inherent variability in engineering test data. We have developed a very low-energy capacitive spark ignition system to produce short sparks with fixed lengths of 1 to 2 mm, an...

In this paper, the crack phenomenon of different materials was studied according to surface morphology recasting layer micro EDM workpiece. high-speed steel and titanium alloy are used as workpiece materials, RC pulse power supply is for electric discharge machining. The profile recast examined by scanning electron microscopy. difference between two in spark machining analyzed. Finally, some im...