Award Data

SVT Associates proposes an innovative atomic Hydrogen enhanced growth and surface preparation technique for high performance Type-II superlattice focal plane array fabrication. This material system is capable of infrared detection from 2 to > 30 micron, depending on layer composition and thickness. Photodetector arrays using this material are of great interest to the DoD for various applications ...

SVT Associates proposes an innovative application of several technologies to create device quality large diameter GaSb virtual substrates on Si. In combination with this GaSb/Si substrate, a novel arsenic isolation apparatus will be applied to Type-II superlattice (SL) growth for LWIR detector applications. Photodetector arrays using this material are of great interest to the DoD for various appl ...

Increased power demands on satellites and remote instruments drive the need for achieving higher conversion efficiencies from solar cells with less weight and volume. Of great current interest is the ability to create nanoscale structures, with device properties that can be uniquely engineered. Quantum dot-based photovoltaics have been demonstrated, but the inherently low packing density of quan ...

This Phase I effort seeks to improve the yield and quantum efficiency of GaAsP photocathodes by improved growth process and post-growth fabrication steps

High-performance, molecular sieve membranes are sought by DOE to separate hydrogen from other gases (mainly carbon diode) in coal gasification processes. However, because of defects, the selectivity of crystalline, silicate-based, molecular sieve membranes can be compromised. This project will develop technology to fix defects in these membranes by reducing pore size and improving gas selectivit ...

Compared to DC electron guns, the significantly-higher field gradients that are possible with an radio frequency (RF) gun would allow short pulse generation, which would make an RF buncher unnecessary. This in turn would allow for a much simpler injector design in high-energy beam facilities, such as the International Linear Collider. However, activated GaAs-based photocathodes, used as the elec ...

Improved, high-sensitivity, large-area UV detectors are sought for many photon-counting and imaging applications. In particular, for nuclear and high energy physics research, there is a need to extend the sensitivity of photon detectors to the blue and UV wavebands. In addition, the photocathodes must have uniform larger-area detection with lower noise and higher efficiency, better tolerance to ...

SVT Associates proposes an innovative ion-beam, atomic Hydrogen and off-axis substrate techniques for device quality large diameter InSb for 3-5 um IR detector applications. Photodetector arrays using this material are of great interest to the DoD for various applications including, in particular,optical detection and tracking of missiles. Ion-beam, Hydrogen atomic, and off-axis substrates have al ...

Military aircraft utilize advanced materials like loaded core composites for superior strength, weight, fatigue and stealth properties in parts such as ailerons, flaps, runners, leading edges and rudders. While new processes like ultrasonic machining for cutting and shaping of loaded cores are an improvement over traditional milling methods to reduce dust, they are slow and suffer from rapid tool ...

Computer Numerically Controlled (CNC) part programs generated by different CAD/CAM software packages are incompatible, which can lead to significant delay and increased engineering and programming labor cost if programs generated at one facility are used at another facility with a different CAD/CAM package. In the proposed research, software algorithms will be developed to convert controller-speci ...