The speed of thin-film transistors (TFTs) relates directly to their gate length, which must be kept as short as possible to lower electron transport time between electrodes, and improve its high-frequency response characteristics. Since current density is...

Multi-spectral-band systems are steadily emerging as a desired feature in a camera system. Each spectral band offers different image characteristics. Shorter-wavelength spectral bands provide the potential for better resolution due to the smaller impact of diffraction on the size of the optics blur. This means...

Propagation in a waveguide requires proper termination of signals to prevent reflections from interfering with the desired circuit functionality. Conventional termination designs for a two-dimensional planar waveguide topology provide maximum signal suppression in the...

Shock layer radiation is a form of aerodynamic heating that becomes significant at some entry velocities, depending on the vehicle trajectory and the planet’s atmosphere. Radiation heating is commonly computed with an appropriate method known as the tangent slab approximate in...

An all-optical, fiber-optic-coupled remote radiation sensor was developed using luminescent, copper-doped quartz material. The key to the technology is the doped quartz material, which produces a luminescence signal that is directly proportional to the radiation dose.

Utilizing the full mechanical capabilities of individual nanotubes is a primary research goal in nanotube reinforced nanocomposite materials. Practical use of these nanomaterials requires creating stable and strong linkages between nanotubes without...

NASA’s Langley Research Center has developed a nanostructure neutron converter layer that can be used for neutron detection. Neutron radiation is a significant risk in long-duration spaceflight and is also a risk in commercial aviation and nuclear reactors. This invention provides for more...

There is a need to calculate the radiative heating rate at the surface of a vehicle entering any atmosphere, (e.g., Earth, Saturn, Titan, Mars, Venus etc). NEQAIR simulates the actual chemical and physical actions and reactions of the gaseous species in high-temperature shock...

A Saturn Net Flux Radiometer (SNFR) is being developed as part of a payload for a future NASA-led Saturn Probe Mission. The current design has two spectral channels i.e., a solar channel (0.4-to-5 μm) and a thermal channel (4-to-50 μm). The SNFR is capable of viewing five distinct viewing angles during the...