We report first-principles calculations of the electronic and geometric structure of the (110) cross-sectional surfaces on InAs/GaSb superlattices and compare the results to scanning tunneling microscopy images of filled electronic states. We also study the atomic scale structure of (001) interface surfaces and the adsorption of deposited atoms on these surfaces to simulate the process occurring during the heterostructure growth. In both the predicted and measured images the InAs (110) ...
Several aspects of the question of the determination of the phase of a wavefield from the knowledge of its intensity in the aperture plane and focal plane of a thin lens are investigated. The role of diffraction from the lens aperture is studied. It is shown that for an astigmatic Gaussian beam this method of phase retrieval is highly nonunique if the beamwidth in the aperture plane is much smaller ...
A parametric study was made of the aircraft skin current and charge under the illumination of the nuclear EMP when the aircraft is in the ground alert mode. An imperfect ground plane was included by using the exact Sommerfield formulation, and the singularity expansion method was used for crude models of aircraft, perpendicular crossed cylinders and perpendicular crossed bodies of revolution. The constitutive electrical parameters of concrete and dry earth ...
Reports by Corporate Author
