We have grown strained Si quantum wells on relaxed Si0.7Ge0.3 buffer layers using vicinal ~118! silicon substrates. Compared to conventional ~001! substrates the surface is tilted by 10° towards the @110# direction resulting in terraces with step edges which run parallel to @11̄0#. The surface morphology of the layers shows ‘‘cross-hatching’’ characteristic of relaxed SiGe films grown on Si subs...

A recently developed method [A. Shelankov and M. Ozana, Phys. Rev. B 61, 7077 (2000)] is applied to investigate d-wave superconductors in the vicinity of (rough) surfaces. While this method allows the incorporation of arbitrary interfaces into the quasiclassical technique, we discuss, as examples, diffusive surfaces and boundaries with small tilted mirrors (facets). The properties of the surfac...

The tilt illusion is a compelling example of contextual influence exerted by an oriented surround on a target's perceived orientation. A vertical target appears to be tilted away from a 15° oriented surround but appears to be tilted toward a 75° tilted surround. We tested the claim that these biases result from distinct sensory processes: a low-level repulsive process and a higher-level attract...

PURPOSE The purpose of this clinical investigation was to evaluate full-arch fixed-dental restorations supported by immediate loaded axial and tilted implants in a single-cohort study. Survival rate of axial and tilted implants was compared. MATERIALS AND METHODS From 2006 to 2010, 30 patients were recruited and treated with dental implants. Provisional fixed-dental prostheses were screw-reta...

Angiogenesis is a crucial step in many pathologies, including tumor growth and metastasis. Here, we show that tilted peptides exert antiangiogenic activity. Tilted (or oblique-oriented) peptides are short peptides known to destabilize membranes and lipid cores and characterized by an asymmetric distribution of hydrophobic residues along the axis when helical. We have previously shown that 16-kD...

One control strategy to increase power production in wind farms is angling turbine rotors, order steer wakes away from downwind turbines. Although rotor yaw the most common approach wake steering, tilting vertically downward can also total farm power. In this study, large eddy simulations of a 15 MW are performed for tilt angles 0°, 15°, and 30° with below-rated turbulent inflow. Wake character...

We propose a polarimetric two-scale surface scattering model employed to retrieve the surface parameters of bare soils from polarimetric SAR data. The scattering surface is here considered as composed of slightly rough randomly tilted facets, for which the Small Perturbation Method holds. The facet random tilt causes a random variation of the local incidence angle, and a random rotation of the ...

The scanning electron microscope (SEM) has been successfully used as an analysis tool for nano-scale materials in nuclear and special materials applications for many years. Recently, the large chamber (LC) SEM at Y12 has demonstrated its power in surface analysis and inspections of large specimens at the nano-scale without destruction of the specimen. This paper summarizes the research efforts ...