The presented model based on the quantum confinement and high electric filed effect illustrates velocity approach to the modeling of a P-type silicon nanowire transistor. It has been clarified that the intrinsic velocity of nanowire and other hetero-structure field-effect transistors (FETs) is governed by the transit time of holes (electrons). The length of the channel for ballistic channel is ...

Computers may be thought of as engines for transforming free energy into waste heat and mathematical work. Existing electronic computers dissipate energy vastly in excess of the mean thermal energy kT, for purposes such as maintaining volatile storage devices in a bistable condition, synchronizing and standardizing signals, and maximizing switching speed. On the other hand, recent models due to...

The kinetics of the annihilation process, A + A → 0, with ballistic particle motion is investigated when the distribution of particle velocities is discrete. This discreteness is the source of many intriguing phenomena. In the mean field limit, the densities of different velocity species decay in time with different power law rates for many initial conditions. For a onedimensional symmetric sys...

Previous research has shown that passive (or ballistic) walking is an energetic efficient and mechanical cheap way of walking. Therefore ballistic walking would be suitable for apphcauons in rehabilitation technology and autonomous robots. Successful application would require a smooth hip trajectory in ordet to protect respectively the patient or electronics against large velocity changes due t...

By means of Monte Carlo simulations coupled with a two-dimensional Poisson solver, we evaluate directly the possibility to use high mobility materials in ultra fast devices exploiting ballistic transport. To this purpose, we have calculated specific physical quantities such as the transit time, the transit velocity, the free flight time and the mean free path as functions of applied voltage in ...

Surface transport of inertial particles is investigated by means of the perturbative approach, introduced by Maxey (J. Fluid Mech. 174, 441 (1987)), which is valid in the case the deflections induced on the particle trajectories by the fluid flow can be considered small. We consider a class of compressible random velocity fields, in which the effect of recirculations is modelled by an oscillato...

In this thesis, we study continuous diffusions in random environment on Rd . The randomness in the environment is incorporated in the diffusion matrix and the drift term that are stationary random variables. Once the environment is chosen, it remains fixed in time, and the diffusion evolving in this frozen environment is a Markov process. To restore some stationarity, it is common to average bo...

1.0 Abstract In this paper, we aim to validate one the most important and frequently used tools of physics: the law of conservation of momentum. We do so by comparing results from two experiments conducted with a single ballistic launcher/pendulum apparatus. In the first, we use kinematics methods alone to determine a mean initial velocity for a projectile. In the second, we add a ballistic pen...

Abstract. The Boltzmann–Poisson system modeling the electron flow in semiconductors is used to discuss the validity of the Child–Langmuir asymptotics. The scattering kernel is approximated by a simple relaxation time operator. The Child–Langmuir limit gives an approximation of the currentvoltage characteristic curves by means of a scaling procedure in which the ballistic velocity is much larger...