Strain and band gap engineered epitaxial germanium (?-Ge) quantum-well (QW) laser structures were investigated on GaAs substrates theoretically experimentally for the first time. In this design, we exploit ability of an InGaAs layer to simultaneously provide tensile strain in Ge (0.7–1.96%) sufficient optical carrier confinement. The direct band-to-band gain, threshold current density (Jth), lo...

A design of a plasmonic coupler, composed metal hole arrays and germanium spacer layer, integrated with quantum well infrared photodetector structure is presented. Insertion layer in this hybrid enhances absorption the z-component an electric field region under both substrate-side air-side illumination configurations. By changing thickness resonance wavelengths can be adjusted peak response. Th...

This paper shares initial findings from an ongoing study assessing the value and limitations of a two-year community-engaged design thinking initiative intended to foster more inclusive holistic public health community-based innovations with underserved communities across one county in southeast U.S. The hopes institutionalize socialize within framework build organizational individual capacitie...

Summary One-part geopolymers, known as “just add water” (JAW), alkali-activated formulation is presented in this work. This work reveals the design and development of short-term properties JAW geopolymers for use oilwell cementing well abandonment. Granite-based mix designs normalized with a byproduct slag small amount microsilica precursors were developed. The solid activator composed potassiu...