Switch Elements with S-Shaped Current-Voltage Characteristic in Models of Neural Oscillators

S-shaped current-voltage characteristics of organic solar devices

Measuring the current-voltage characteristic of organic bulk heterojunction solar devices sometimes reveals an S-shaped deformation. We qualitatively produce this behavior by a numerical device simulation assuming a reduced surface recombination. Furthermore we show how to experimentally create these double diodes by applying an oxygen plasma etch on the indium-tin-oxide anode. Restricted charg...

Hydraulic-turbine start-up with "S-shaped" characteristic

Fast response of hydraulic turbines is a key condition for the integration of renewable sources of energy. In this paper, a new start-up strategy is proposed for hydraulic turbines prone to ”S” instability. This method is based on a complete nonlinear model of the turbine together with the upstream water pipe. More precisely, the control strategy is based on a gain scheduling approach that is c...

Current-voltage characteristic of electrospray processes in microfluidics.

We use a glass-based microfluidic device to study the electric current behavior of an electrospray process in the presence of a coflowing liquid. The current shows strong voltage dependence and weak flow rate dependence, in stark contrast to classical electrospray. By considering that the current is dominated by convection near the apex of the conical meniscus and driven by tangential electric ...

Current - Voltage Characteristic of a PartiallyIonized Plasma in Cylindrical

The properties of a partially ionized plasma in a long cylindrical tube subject to a uniform axial electric eld are investigated. The plasma is maintained by an external ionizing source balanced by bulk and surface recombinations. Collisions between neutrals, whose density greatly exceeds the density of charged particles, and of neutrals with ions are suuciently eeective for their velocity dist...

Alternating current loss in a cylinder with power-law current-voltage characteristic