Publications

The discovery of high temperature superconductivity in perovskite- related oxides has generated an enormous amount of research activity and development effort toward applications.

A new method for fabricating narrow linewidth antiphase complex coupled MQW DFB lasers by periodically etching the active layer and quartemary InGaAsP overgrowth is reported.

Conventional quantum cascade (QC) lasers are intrinsically edge-emitting devices with mode confinement achieved via a standard mesa stripe configuration.

Structures as small as 20 nm have been fabricated in GaAs by high resolution electron beam lithography and reactive ion etching.

3D stacking of die with TSV (through Silicon Via) connection as well as wafer level packaging of CMOS image sensors (CIS) are becoming very hot topics.

Ba sub 2 YCu sub 3 O sub x ceramics have been hot pressed to yield microstructures with small amounts of preferred orientation and densities above 6.0 g/cm sup 3.

Ceramic processing methods have been used to prepare high T sub c superconductors in both the La sub (2-x)Sr sub (x)CuO sub (4-8) system and the Ba sub 2 YCu sub 3 O sub (9-8) system. 

A study is presented of the build-up of ion-beam damage in multilayers and superlattices of elemental and compound semiconductors.

Fabrication of high T sub c ceramic superconductors by an oxide melting method in place of conventional sintering method has been attempted.

A robust technique for fabrication of metal wires with controlled widths substantially below 10 nm is presented.