Intracorneal Migration of Silicon Band

Intracorneal migration of a silicone strap.

Horizontal intracorneal swirling water migration indicative of corneal endothelial function.

PURPOSE To test our hypothesis about whether there is water migration in the horizontal corneal plane and investigate its developmental mechanism. METHODS A fluorescein solution was intrastromally injected into normal and edematous corneas of rabbits, and the movement of the fluorescein solution was observed and recorded over time. RESULTS In normal corneas, the water flow was characterized...

Silicon nanowire band gap modification.

Band gap modification for small-diameter (approximately 1 nm) silicon nanowires resulting from the use of different species for surface termination is investigated by density functional theory calculations. Because of quantum confinement, small-diameter wires exhibit a direct band gap that increases as the wire diameter narrows, irrespective of surface termination. This effect has been observed...

Warping in the valence band of silicon

The study of the valence band ~VB! of diamond-type semiconductors goes back at least as far back as a paper by Shockley. Detailed study commenced in the classic paper by Dresselhaus, Kip, and Kittel in which the A , B , C parameters were introduced in a three-band k•p model to describe the structure of the VB; the parameters were determined from measurements of the effective mass as a function ...

Intracorneal and sclerocorneal cysts.

Two cases of corneal cysts are reported, one sclerocorneal and the other intracorneal. The two conditions differ in pathogenesis, appearance, course, and management.