منابع مشابه
Fractal terraces in MBE growth
MBE growth on high symmetry surfaces depends to some extent on the shape of the terraces which form the embryos of each new atomic layer. The conditions for formation of compact or fractal terraces are discussed in two limits: large terraces, to which a continuous description applies, and small terraces, which require that the discrete nature of matter be taken into account. In both cases it is...
متن کاملExploring the Growth Mechanisms of GaAs Nanowires Grown by MBE
We have successfully grown GaAs nanowires by Molecular Beam Epitaxy. In this work, we investigate the principal growth mechanisms underlying nanowire growth by measuring the morphology of the nanowires and comparing them to a simple growth model. From this, we are able to make several conclusions. The results of the data show that Adatom Diffusion contributes more to the overall growth rate tha...
متن کاملParallel Monte Carlo simulation of MBE growth
We present a parallel algorithm for Monte Carlo simulation of molecular beam epitazial growth (MBE) focusing on the software we have developed and the ezperiences gained. An eficient sequential method to do MBE simulation was developed that uses a single binary tree t o store the rates of occwence of all possible events at a given time. The challenge was to find a ioay to adapt this method to a...
متن کاملWrist Pulse Rate Monitor Using Self-Injection-Locked Radar Technology
To achieve sensitivity, comfort, and durability in vital sign monitoring, this study explores the use of radar technologies in wearable devices. The study first detected the respiratory rates and heart rates of a subject at a one-meter distance using a self-injection-locked (SIL) radar and a conventional continuous-wave (CW) radar to compare the sensitivity versus power consumption between the ...
متن کاملSignal Adaptive MBE Modeling for Low Bit Rate Speech Coding
The Multiband Excitation (MBE) model has been found to be suitable for coding of narrowband speech at rates below 4 kbps due to its ability to produce natural sounding speech with a compact set of model parameters and its noise robustness. However the fixed frame analysissynthesis framework of the MBE model is unsuitable for representing dynamic speech sounds such as stops and vocalic transitio...
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ژورنال
عنوان ژورنال: SHINKU
سال: 1987
ISSN: 0559-8516,1880-9413
DOI: 10.3131/jvsj.30.339