Recent in situ observations during Critical Ionization Velocity (CIV) experiments under the CRIT project produced puzzling results, apparently at odds with current ClV theories. It is shown that incorporation in the theory of lower hybrid wave (LHW) instabilities of strong turbulence and finite size effects results in reconciliation of the theory with the observations.

Abstract For years, friction-induced vibration and noise (FIVN) has puzzled many researchers in academia industry. Several mechanisms have been proposed for explaining its occurrence quantifying frequencies, notably automotive brake squeal, clutch even rail corrugation. However, due to the complex complicated nature of FIVN, there is not yet one fundamental mechanism that can explain all phenom...

Spin-orbit interaction in flat graphene is rather weak due to the symmetry of the lattice. However, substrate surface-corrugation can break this symmetry and induce a relatively large spin-orbit interaction. In this work we study spin transport in armchair graphene nanoribbons (AGNR) in the presence of substrate surface-corrugation. We employ the non-equilibrium green’s function along with a mu...

We present a one dimensional model for the development of cor-rugations in roads subjected to compressive forces from a flux of cars. The cars are modeled as damped harmonic oscillators translating with constant horizontal velocity across the surface, and the road surface is subject to diffusive relaxation. We derive dimensionless coupled equations of motion for the positions of the cars and th...

Graphene monolayers supported on oxide substrates have been demonstrated with superior charge mobility and thermal transport for potential device applications. Morphological corrugation can strongly influence the transport properties of the supported graphene. In this paper, we theoretically analyze the morphological stability of a graphene monolayer on an oxide substrate, subject to van der Wa...

Low-energy electron microscopy and microprobe diffraction are used to image and characterize corrugation in SiO(2)-supported and suspended exfoliated graphene at nanometer length scales. Diffraction line-shape analysis reveals quantitative differences in surface roughness on length scales below 20 nm which depend on film thickness and interaction with the substrate. Corrugation decreases with i...

We investigate the effect of stepped edge corrugations on the front-to-back ratio (F/B ratio) improvement for the antipodal DETSA. Three types of corrugation configurations with different combinations of slit length are investigated. The results revealed that the improvement in F/B ratio is directly related to the arrangement in corrugation configurations.

Using the differential theory of light diffraction by finite cylindrical objects, we study light transmission through a small circular aperture in a metallic screen with concentric corrugation around the nanohole. Poynting vector maps in the region below the screen show that the field enhancement compared with an unstructured aperture is obtained with corrugation lying on the entrance face of t...

The linear stability of steady flow in pipes with circular cross-section and sinusoidal axial variation in diameter is studied by finding global eigenmodes with axial wavelength commensurate with that of the wall corrugation, chosen to be equal to one pipe mean radius. The maximum peak-to-peak height of corrugation considered is approximately 8% of the mean diameter. At low corrugation amplitud...