Автор:Saggam Narendar Год: 2012 Издание:LAP Lambert Academic Publishing Страниц: 180 ISBN: 9783659190247 Nanostructures can have interesting waveguide properties at very high frequencies in the order of Tera-Hertz. At such high frequencies, continuum model based methods cannot be adopted due to their limitation of the size with respect to the wavelength, which is very small at such frequencies. The length scales of nanostructures are often sufficiently small, and hence for the applicability of classical continuum models, we need to consider the small length scales such as lattice spacing between individual atoms, grain size, etc. The conventional continuum models cannot handle scale effects. Hence the best alternative is to use those methods which provides the simplicity of continuum models and at the same time incorporate the effects of scale in such chosen continuum models. This makes a physically consistent classical continuum model formulation very challenging. The nonlocal elasticity theory is useful tool in treating phenomena whose origins lie in the regimes smaller than the...
