Keyword: Radiation

Briefs: Test & Measurement
Technique Provides Rapid Assessment of Radiation Exposure

Researchers have developed a new technique that assesses radiation exposure in about an hour using an insulator material found in most modern electronics. The technique can be used to triage medical cases in the event of a radiological disaster.

Briefs: Test & Measurement
Measurement Technique for Continuous-Wave, Modulated, and Pulsed Monochromatic Radiation

In many applications, such as remote sensing of atmospheric trace gases, monochromatic radiation with multiple discrete wavelengths is required. To date, there no instrument or technique that measures the wavelength jitters and fluctuations in real time.

Briefs: Sensors/Data Acquisition

Radiology workers are regularly exposed to low doses of radiation when they obtain patient imagery such as X-rays. While protective gear largely keeps workers within a safe range of...

Briefs: Mechanical & Fluid Systems
Polymer Nanofiber-Based Reversible Nano-Switch/Sensor Schottky Diode (nanoSSSD) Device

Innovators at NASA's Glenn Research Center have developed a unique nano-structure device that operates as a nano-switch/sensor for detecting toxic gases and ultraviolet (UV) radiation. Conventional microsensors are limited by their short life, high cost and...

Briefs: Sensors/Data Acquisition

A material was developed for nuclear radiation detection that could provide a significantly less expensive alternative to the detectors now in commercial use. Specifically, the high-performance material is...

Briefs: Data Acquisition

Recent findings indicate that frequent, short-term crew exposure to elevated CO2 levels, combined with other physiological impacts of microgravity, may lead to a...

Briefs: RF & Microwave Electronics
Correcting the Antenna Temperature of an Earth-Observing Microwave Instrument for Extraterrestrial Contamination

Microwave antennas deployed for spaceborne radiometers are diffraction-limited, with typical beam efficiency of about 90%, and provide relatively poor selectivity against radiation from celestial bodies (Moon, Sun, galaxy) when they...

Briefs: Sensors/Data Acquisition

Innovative “lighthouse” detectors, which use a sweeping beam to pinpoint a radiation source in seconds, are reducing radiation exposure for workers and...

Briefs: Test & Measurement

It has been established opinion since the 1950s that organic crystals and liquid scintillators can work for detecting neutrons, but that plastics are not suitable for neutron detection. For...

Briefs: Test & Measurement

For emergencies involving radiation, decision-makers must have a means to swiftly assess the situation. Having analysis tools that can quickly and reliably make sense of radiation data is of the essence.

Briefs: Transportation

Vanadium dioxide’s unique properties make it ideally suited for outperforming silicon and giving rise to a new generation of low-power electronic devices. This compound can...

Briefs: Materials
Novel Radiation Shielding Material for Dramatically Extending the Orbit Life of CubeSats

NASA Langley Research Center has developed an innovative radiation shield made by layering metal materials in the Z-shielding method. It is a new, low-cost, and easy-to-implement method to protect CubeSat electronic circuits from ionizing radiation found in...

Briefs: Medical

This technology uses extracts produced from yeast transformed with a new anti-UV DNA construct to block ultraviolet (UV) radiation.

Briefs: RF & Microwave Electronics

NASA Glenn’s cup cylindrical waveguide antenna (CCWA) is a short backfire microwave antenna capable of simultaneously supporting the transmission or reception of two distinct signals having opposite...

Briefs: Medical

Panoramic irradiators are commonly used to disinfect and sterilize products such as medical supplies, cosmetic raw materials, food, food containers, and medical supplies. The irradiators...

Briefs: Medical

Terahertz radiation — the band of the electromagnetic spectrum between microwaves and visible light — has promising applications in medical and industrial imaging and chemical...

Briefs: Electronics & Computers
Method of Fabricating Ultra-Short-Gate-Length Thin-Film Transistors Using Optical Lithography

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...

Briefs: Photonics/Optics

A new form of compact cooling technology developed for space astronomy could pave the way for use of advanced superconducting detectors for better cancer treatments, driverless...

Briefs: Photonics/Optics
Dual-Field-of-View Multiband Optics

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...

Briefs: Materials
Electromagnetic Metamaterial with Wide Angular and Broadband Spectral Absorption

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...

Briefs: Test & Measurement

Measurement devices that can withstand the acid rains on Venus, radiation in space, and the heat of car engines are being developed to improve research in these extreme...

Application Briefs: Energy
Keysight Technologies
Santa Rosa, CA
www.keysight.com

Implantable medical biosensors are commonly used to treat health problems via the unobtrusive collection of...

Briefs: Aerospace
Three-Dimensional Radiation Ray-Tracing for Hypersonic Entry Vehicles

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...

Application Briefs: Photonics/Optics

To shrink device size yet still tightly control performance, new technology often requires increasingly stringent surface specifications. Characterization tools, in turn, must keep pace by...

Briefs: Photonics/Optics
Fiber-Optic Environmental Radiation Dosimeter

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.

Briefs: Semiconductors & ICs

Front-end electronics for capacitive sensors typically include a preamplifier followed by a filter. The preamplifier provides low-noise amplification of the signals induced in the sensor...

News: Imaging

NASA's Langley Research Center has developed an aircraft-based turbulence and vortex detection system. Turbulence and vortices in the front-flight path are very dangerous for...

Briefs: Sensors/Data Acquisition

NASA's Langley Research Center has developed a novel polymer material that can be utilized as a real-time structural health monitoring sensor. The material is...

Articles: Materials

This column presents technologies that have applications in commercial areas, possibly creating the products of tomorrow. To learn more about each technology, see the contact information provided for that...