Keyword: Spectroscopy

Briefs: Electronics & Computers

A middle infrared light source can detect greenhouse and other gases as well as molecules in a person’s breath. The compact system, which resembles a tiny suitcase, contains just two parts: a standard...

Briefs: Test & Measurement

Engineers have remotely determined the temperature beneath the surface of certain materials using a new technique called depth thermography. The method may be useful in applications where...

Briefs: Test & Measurement

Any space, enclosed or open, can be vulnerable to the dispersal of harmful airborne biological agents. Silent and near-invisible, these bioagents can sicken or kill living things before...

Application Briefs: Sensors/Data Acquisition
See how hyperspectral imaging adds value to food inspection systems.
Briefs: Test & Measurement
NASA's NEID tool delivered its first batch of data on the nearest and best-studied star, our Sun.
Articles: Photonics/Optics
With an optical microscope, spectra can be acquired from a sample area smaller than a micron.
Briefs: Photonics/Optics
Applications include remote sensing, laser spectroscopy, and gas analysis.
Application Briefs: Imaging
Any hyperspectral system needs to maintain a stable and accurate radiometric and spectral calibration.
Briefs: Electronics & Computers
This device fits on a computer chip but can analyze infrared light in the same way as a conventional spectrometer.
Briefs: Test & Measurement
This simple and inexpensive design achieves high-quality ozone measurements.
Briefs: Sensors/Data Acquisition
Applications include biomedical imaging, remote sensing, and heliophysics research.
Briefs: Test & Measurement
The response time of kinetic inductance bolometers can be greatly enhanced by electrothermal feedback for devices that are both sensitive and speedy.
NASA Spinoff: Imaging
Technology used to search for extraterrestrial life can characterize radioactive material.
Articles: Test & Measurement
The AIRGARD® air analyzer has been deployed to protect multiple critical infrastructure locations.
Briefs: Photonics/Optics
Systems and Methods for Correcting Optical Reflectance Measurements

Optical spectroscopy can be used to determine the concentration of chemical species in samples. The amount of light absorbed by a particular chemical species is often linearly related to its concentration through Beer’s Law. For nontransparent materials such as powders,...

Briefs: Test & Measurement
Measurement Method for Radioactive Methane

Anew method for measuring radioactive methane is an optical one based on spectroscopy. Previously, radioactive methane has been measured with accelerator mass spectrometry involving expensive machines. Optical measuring could be a cheaper and more agile method.

Briefs: Test & Measurement

Researchers at NASA’s Armstrong Flight Research Center have identified and evaluated recently available miniature spectrometers that enable compact and robust pyrometry...

Briefs: Materials

Pulsed laser vaporization (PLV) production of single-wall carbon nanotubes (SWNTs) on traditional Co/Ni catalyst was explored with...

Briefs: Photonics/Optics

The detection and localization of gas releases, such as methane from leaking natural gas pipelines or nitrogen oxides from failing electrical equipment, require high sensitivity to the target gas and insensitivity...

Briefs: Photonics/Optics

Spectrometers are widely used for applications such as chemical analysis, remote sensing, quality control, environmental monitoring, spaceborne measurements, and optical measurements. Most spectrometers...

Briefs: Test & Measurement
Configuration Enables RFID Tags to Work as Sensors

The detection and localization of gas releases, such as methane from leaking natural gas pipelines or nitrogen oxides from failing electrical equipment, require high sensitivity to the target gas and insensitivity to non-target gases. Infrared (IR) absorption spectroscopy gives highly specific...

Briefs: Nanotechnology

Infrared spectroscopy is the benchmark method for detecting and analyzing organic compounds. However, that requires complicated procedures and large, expensive instruments, making...

Briefs: Medical

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: Sensors/Data Acquisition

Correlation spectroscopy is an attractive technique for sensing and analysis applications because it combines the attributes of mechanical and optical simplicity, high selectivity, and good sensitivity. In...

Briefs: Mechanical & Fluid Systems
Mobile Instrument Detects and Samples Aerosol Particles

Hazardous airborne particles pose a risk for health and safety in a variety of environments; thus, detection of these small particles is essential. Current particle magnification systems are bulky and require a lot of power for operation, making them unsuitable to easily detect and analyze...

Briefs: Sensors/Data Acquisition

For decades, mass spectrometers have offered a relatively fast and highly sensitive way to analyze and detect chemical compounds. But their bulky size has been a hindrance, limiting the in-field potential of the...

Briefs: Electronics & Computers
Technique Measures Temperature of 2D Materials at the Atomic Level

Newly developed two-dimensional (2D) materials such as graphene — which consists of a single layer of carbon atoms — have the potential to replace traditional microprocessing chips based on silicon, which have reached the limit of how small they can get. But engineers have...

Application Briefs: Sensors/Data Acquisition

Farming has not been untouched by the IoT revolution. The relationships among field conditions, crops, and strategies for planting, irrigating, and harvesting are complex, yet vital for...

Briefs: Nanotechnology
Ultra-Sensitive Temperature Sensor

A temperature sensor with practically no effect at all on the temperature of the object measured has been created in the laboratory by researchers at the University of São Paulo (USP) and the University of Campinas (UNICAMP) and is awaiting a patent for commercial production.