Publications

The spatial variation of transconductance in AlGaN/GaN heterostructures was mapped using the conducting tip of an atomic force microscope to locally modulate the two-dimensional electron gas (2DEG)

T h e present paper is a chapter of a new book entitled " U l t r a sonics in Solids", which is scheduled for publication by D. Van Nostrand in 1956.

Effect of Echo Canceler on Common-Channel Interoffice Signaling Continuity Check By G. S.

The thickness dependence of constant voltage lifetimes tests are compared for ultrathin oxides in the range of 50-125angstroms.

We capture the effects of evaporation and condensation at menisci on apparent thermal slip lengths for liquids sus- pended in the Cassie state on ridge-type structured surfaces.

We use Gutzwiller's variational method to study a modified Hubbard model with a low-lying excited state on each site.

Fiber coupling measurements have been made on two groups of 1.3 micron Hitachi lasers.

Effect of Feedback on Impedance By R. B.

One point not yet studied in the way of optimization of Bragg grating elaboration is the effect of fiber drawing tension. We performed the study and present the results here.

The effect of optical feedback on the intensity-noise spectrum and the longitudinal-mode line shape of a 1.55micron InGaAsP laser is investigated for reflections arising from the far end of a 7.5-k