Sensors, MEMS, Electronics – Page 325

Spatially Resolved Electron Energy-Loss Spectroscopy, a Tool to Verify Electronic Structure Calculations in Nanostructured Materials

Duscher G., Plitzko J., Kisielowski C., Buzko R., Pennycook S.J., Pantelides S.T., North Carolina State University, US

Modern mcroscopy allows a direct comparison between experimental results and the atomic and electronic structure as obtained by state of the art ab-initio calculations. The phase reconstruction technique allows one to determine the positions of [...]

Nanoscale Modeling of Front-End Processing in Silicon

Binding Energy of an Exciton Bound to a Charged Impurity in Quantum Dots

Xie W., Guangzhou University, CN

Binding energies for an exciton (X) trapped in the two-dimensional quantum dot by a charged impurity located on the z axis at a distance from the dot plane are calculated using the method of few-body [...]

Gain in a Semiconductor Waveguide Qubit

Harris J., Akis R., Ferry D.K., Arizona State University, US

Recently, it has been suggested that it may be possible to use combinations of coupled quantum wire waveguides to form quantum computational qubits [1],[2]. However, there are several related problems intrinsic to this approach. First, [...]

Computing Excitons in V-shaped Quantum Wires Including Band-Structure and Dielectric Effects : Binding energies and polarization anisotropy of the bright A1, B1, A2 excitons

Dupertuis M.A., Oberli D.Y., Kapon E., Swiss Federal Institute of Technology-EPFL, CH

We demonstrate an efficient numerical scheme for the computation of the excitonic optical response of actual GaAs/AlGaAs quantum wire structures including a large set of relevant effects; structural, valence band-mixing, dielectric and many-body effects can [...]

Residual Stress Modeling in Quantum Dots

Vlahovic B., Wang K., Suslov V., Yakovlev S.L., Otieno C., Soldi A., Dutta J., North Carolina Central University, US

One of the possible applications of the quantum dots is in a new generation of photovoltaic cells. Theory predicts the efficiency of these based solar cells to be up to 63 percent, which is substantially [...]

Quantum Effects in SOI Devices

Ahmed S.S., Akis R., Vasileska D., Arizona State University, US

Quantum effects have been reported to play an important role in the operation of narrow width SOI devices, in which the carriers experience a two dimensional confinement in a square quantum well at the semiconductor-oxide [...]

Electron Vorticity – Internal Energy Formulation of the Hydrodynamic Model of Electron Transport

Mohseni K., Shakouri A., University of Colorado, US

The hydrodynamic model of electron transport is revisited. By rearranging the governing equations a new set of equations in terms of the electron vorticity and internal energy is derived. The advantage of the new set [...]

Principles of Electron Wave Computing using Quantum Resistor Networks

Wu C.H., University of Missouri-Rolla, US

Quantum resistor networks are interconnected thin wires or electron conducting wave guides. A multiple input-output quantum network is capable of performing massive parallel computing, similar to optical computing. Basic logic functions and arithmetic computation have [...]

Modelling Coupled Motion of Electrons in Quantum Dots with Wetting Layers

Melnik R.V.N., Willatzen M., University of Southern Denmark, DK

The influence of wettin-layer states on quantum-dot states and vice-versa is examined numerically employing a one-band model for electroncs in the conduction band. This problem corresponds to the case where a few monolayer InAs grown [...]