Keyword: Spectroscopy

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: Photonics/Optics
This device fits on a computer chip but can analyze infrared light in the same way as a conventional spectrometer.
Briefs: Sensors/Data Acquisition
This simple and inexpensive design achieves high-quality ozone measurements.
Briefs: Test & Measurement
Applications include biomedical imaging, remote sensing, and heliophysics research.
Briefs: Electronics & Computers
The response time of kinetic inductance bolometers can be greatly enhanced by electrothermal feedback for devices that are both sensitive and speedy.
NASA Spinoff: Materials
Technology used to search for extraterrestrial life can characterize radioactive material.
Articles: Defense
The AIRGARD® air analyzer has been deployed to protect multiple critical infrastructure locations.
Briefs: Medical
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: Energy
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: Semiconductors & ICs

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: Test & Measurement

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: Test & Measurement

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

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: Test & Measurement

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: Sensors/Data Acquisition
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: Test & Measurement

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: Imaging
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: Test & Measurement
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.

Briefs: Sensors/Data Acquisition
Fourier Transform Spectrometer System

NASA's Langley Research Center and Science Applications International Corporation have developed a method of processing data from Fourier transform spectroscopy (FTS) measurements that improves upon existing methods. This method is simpler, more accurate, faster, and less expensive than previous methods. It...

Briefs: Materials

Superconducting materials are technologically important because electricity flows through them without resistance. Only low-temperature superconductivity seemed possible before 1986,...

Briefs: Imaging

A large-area detector without any dead space capable of handling a large dynamic range does not currently exist. Current large-area detectors have dead zones created by abutting several modules...

Briefs: Sensors/Data Acquisition
Gas Sensing System Employing Raman Scattering

The detection and characterization of molecular gases in a sample is a relatively difficult challenge. Usually, this task is relegated to expensive and time-consuming processes like mass spectrometry and gas chromatography. Furthermore, numerous industrial applications require such gas-phase analysis...

Briefs: Sensors/Data Acquisition

Gas sensors are usually engineered to detect a specific molecule in one of many potential categories: toxic gases, combustible gases, and VOCs. A number of technologies, such as infrared,...