Angle disorder is an intrinsic feature of twisted bilayer graphene and other moir\'e materials. Here, we discuss electron transport in the presence angle disorder. We compute local density states Landauer-B\"uttiker transmission through barrier with a width comparable to period, using decimation technique based on real-space description. find that barriers which separate regions where widths ba...

A study of the effects of small-angle specimen tilt on high-resolution annular dark field images was carried out for scanning transmission electron microscopes with uncorrected and aberration-corrected probes using multislice simulations. The results indicate that even in the cases of specimen tilts of the order of 1 degree a factor of 2 reduction in the contrast of the high-resolution image sh...

An acousto-optic modulator (AOM) allows to diffract a laser beam going through a crystal from the incidence angle (order 0) to another angle (order 1). The diffracted beam intensity depends on the radio frequency (RF) power applied to the device while the output angle depends on the material but is also proportional to the laser wavelength and to the RF drive frequency. When only intensity modu...

A problem of reflection and transmission of a plane shear wave incident at a corrugated interface between transversely isotropic inhomogeneous and visco-elastic half-spaces is investigated. Applying appropriate boundary conditions and using Rayleigh’s method of approximation expressions for reflection and transmission coefficients are obtained for the first and second order approximation of the...

The γ-ray burst GB970508 was observed simultaneously by the Gamma Ray Burst Monitor (GRBM) and one of the X–ray Wide Field Cameras (WFC) aboard BeppoSAX. The latter provided a position within 1.9 radius. A series of follow-up observations with the Narrow Field Intruments (NFI) was then performed in a period from ∼ 6 hours to 6 days after the main event. A previously unknown source, which we ass...

Transmission X-ray mirrors have been fabricated from 300-400 nm-thick low-stress silicon nitride windows of size 0.6 mm x 85 mm. The windows act as a high-pass energy filter at grazing incidence in an X-ray beam for the beam transmitted through the window. The energy cut-off can be selected by adjusting the incidence angle of the transmission mirror, because the energy cut-off is a function of ...

The reflection and transmission of thermoelastic plane waves at an imperfect boundary of two dissimilar fibre-reinforced transversely isotropic thermoelastic solid half-spaces under hydrostatic initial stress has been investigated. The appropriate boundary conditions are applied at the interface to obtain the reflection and transmission coefficients of various reflected and transmitted waves wi...