Developing alternative high dielectric constant (k) materials for use as gate dielectrics is essential for continued advances in conventional inorganic CMOS and organic thin film transistors (OTFTs). Thicker films of high-k materials suppress tunneling leakage currents while providing effective capacitances comparable to those of thin films of lower-k materials. Self-assembled monolayers (SAMs)...

We investigate the electronic transport properties across the pentacene/graphene interface. Current transport across the pentacene/graphene interface is found to be strikingly different from transport across pentacene/HOPG and pentacene/Cu interfaces. At low voltages, diodes using graphene as a bottom electrode display Poole–Frenkel emission, while diodes with HOPG and Cu electrodes are dominat...

Electron transport is discussed for an ensemble of fused conical indium phosphide nanowires bridging two hydrogenated n-silicon electrodes. The current-voltage (Id-Vd) characteristics exhibit a Coulomb staircase in dark with a period of ~ 1 V but it disappears under light illumination in some devices, while Id-Vd is featureless smooth monotonic curve in other devices. It is shown that transport...

We report for the first time on rich and tunable transport phenomena in closed-packed arrays of PbSe colloidal nanocrystals (NCs) in the form of thin films. As the interdot coupling is increased, the system evolves from an insulating regime dominated by Coulomb blockade to a semiconducting regime, where hopping conduction is the dominant transport mechanism. The observed phenomena can be interp...

The nonlinear dynamics of microtearing modes in standard tokamak plasmas are investigated by means of ab initio gyrokinetic simulations. The saturation levels of the magnetic field fluctuations can be understood in the framework of a balance between (small poloidal wave number) linear drive and small-scale dissipation. The resulting heat transport is dominated by the electron magnetic component...

We propose an enriched Galerkin-characteristics finite element method for numerical solution of convection-dominated problems. The uses the modified characteristics integration total derivative in time, combined with spatial discretization on unstructured grids. L 2 -projection is implemented evaluation solutions by tracking departure points from each element. In present study, a family quadrat...

An overview of experimental transport studies performed on the Rijnhuizen Tokamak Project (RTP) using transient transport techniques in both Ohmic and ECH dominated plasmas is presented. Modulated Electron Cyclotron Heating (ECH) and oblique pellet injection (OPI) have been used to induce electron temperature (Te) perturbations at different radial locations. These were used to probe the electro...