Fourier optics is a powerful tool for the coherent manipulation of optical fields, for the spatial frequency analysis of images, and for the construction of real time correlators. One property that makes optics an exciting tool for frequency analysis is that, in free-space propogation of light, one can see the effects of lenses and filters on a light beam as the beam propogates through the syst...

A general circulation model is used to study the interaction between parameterized gravity waves (GWs) and large-scale Kelvin in tropical stratosphere. The simulation shows that with substantial amplitudes (∼10 m s−1) can significantly affect distribution of GW drag by modulating local shear. Furthermore, this effect localized regions above strong convective organizations generate large-amplitu...

Free surfaces of semiconductors respond to light by varying their surface voltage (surface band bending). This photovoltage may be easily detected using a Kelvin probe. Modeling the transient temporal behavior after is turned off serve as means characterize several key electronic properties semiconductor, which are fundamental importance in numerous device applications, such transistors and sol...

In this paper, we deal with the elastic vibrations of flexible structures modeled by the ‘standard linear model’ of viscoelasticity in n-dimensional space. We study the uniform exponential stabilization of such kind of vibrations after incorporating separately very small amount of passive viscous damping and internal material damping of Kelvin-Viogt type in the model. Explicit forms of exponent...

In this study, a realistic model for dynamic instability of embedded single-walled nanotubes (SWCNTs) conveying pulsating fluid is presented considering the viscoelastic property of the nanotubes using Kelvin–Voigt model. SWCNTs are placed in longitudinal magnetic fields and modeled by sinusoidal shear deformation beam theory (SSDBT) as well as modified couple stress theory. The effect of slip ...

We prove an existence result for the fractional Kelvin-Voigt's model involving Caputo's derivative on time-dependent cracked domains. first show of a solution to regularized version this problem. Then, we use compactness argument derive that admits which satisfies energy-dissipation inequality. Finally, when crack is not moving, unique.

The paper is devoted to the construction of effective acoustic equations for a two-phase layered viscoelastic material described by Kelvin–Voigt model with fractional time derivatives. For this purpose, theory two-scale convergence and Laplace transform respect are used. It shown that partial integro-differential derivatives exponential convolution kernels. In order find coefficients kernels th...