We show that chirping gravitational waves in the LIGO frequency band $f=1 - 5000$ Hz can be gravitationally diffracted by Sun, due to coincidence of its Fresnel length $r_F \propto \sqrt{1\, {\rm AU}/f}$ and solar radius $r_\odot$. This diffraction is detectable through frequency-dependent amplification wave, albeit with low event rates. also advocate allows probing inner profile evolution freq...

Theoretical study of arrays graphene ribbons is currently high interest due to its potential application in beam splitters, absorbers, and polarizers. In this paper, an analytical method presented for diffraction analysis ribbon arrays. Previous studies were carried out the regime where lateral separation between much smaller than wavelength incident wave. As such, they cannot be used calculate...

We present a boundary integral equation formulation for the problem of wave propagation in a borehole of irregular cross-section. The method consists in representing the wave field diffracted at the borehole-rock interface by the radiation from a distribution of surface sources applied along the borehole wall. The wave field in the borehole fluid and in the elastic rock are then expressed using...

Double-resonant extremely asymmetrical scattering (DEAS) is a strongly resonant type of Bragg scattering in two joint or separated uniform gratings with different phases. It is characterised by a very strong increase of the scattered and incident wave amplitudes inside and between the gratings at a resonant phase shift between the gratings. DEAS is realised when the first diffracted order satis...

A new method for recovery the quantitative phase information of microscopic samples is presented. It is based on a spatial light modulator (SLM) and digital image processing as key elements to extract the sample's phase distribution. By displaying a set of lenses with different focal power, the SLM produces a set of defocused images of the input sample at the CCD plane. Such recorded images are...

Changes in aortic wall material properties, such as stiffness, have been shown to accompany onset and progression of various cardiovascular pathologies. Pulse Wave velocity (PWV) and propagation along the aortic wall have been shown to depend on the wall stiffness (i.e. stiffer the wall, higher the PWV), and can potentially enhance the noninvasive diagnostic techniques. Conventional clinical me...

We consider the co-axial cylindrical structure as a composite submerged solid cylinder above special bottom undulation, i.e., circular plate at impermeable horizontal bottom. diffraction problem of proposed in water finite depth. This can be expressed wave energy converter. The variables separation and eigenfunction expansion methods are utilized to determine analytical solutions for their iden...

Abstract The energy and therefore the frequency of electromagnetic fields are quantities which generally considered to be conserved in free space propagation. However, we observe here a varying optical wave light comes from an Arago spot. Its changes due rotational Doppler effect. More precisely, diffracted by two-dimensional asymmetric object carries orbital angular momentum that varies with d...