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Fourier transform infrared spectroscopy (FTIR) [1] is a technique used to obtain an infrared spectrum of absorption or emission of a solid, liquid, or gas. An FTIR spectrometer simultaneously collects high-resolution spectral data over a wide spectral range.
An infrared detector is a detector that reacts to infrared (IR) radiation. The two main types of detectors are thermal and photonic ( photodetectors ). The thermal effects of the incident IR radiation can be followed through many temperature dependent phenomena. [ 2 ]
A nondispersive infrared sensor (or NDIR sensor) is a simple spectroscopic sensor often used as a gas detector.It is non-dispersive in the fact that no dispersive element (e.g a prism or diffraction grating as is often present in other spectrometers) is used to separate out (like a monochromator) the broadband light into a narrow spectrum suitable for gas sensing.
Infrared spectroscopy is also used in gas leak detection devices such as the DP-IR and EyeCGAs. [8] These devices detect hydrocarbon gas leaks in the transportation of natural gas and crude oil. Infrared spectroscopy is an important analysis method in the recycling process of household waste plastics , and a convenient stand-off method to sort ...
The detection of a single molecular complex [2] and the sensitivity to a single monolayer [3] has been shown. Recording infrared spectra as a function of position can be used for nanoscale mapping of the sample chemical composition, [4] [5] performing a local ultrafast IR spectroscopy [6] and analyzing the nanoscale intermolecular coupling, [7 ...
The detector used in a spectroradiometer is determined by the wavelength over which the light is being measured, as well as the required dynamic range and sensitivity of the measurements. Basic spectroradiometer detector technologies generally fall into one of three groups: photoemissive detectors (e.g. photomultiplier tubes), semiconductor ...
"Good Morning America" reports Wong later returned to the slopes with a metal detector and found his iPhone - Chris Wong says he lost his iPhone while skiing in Vermont, so he searched the slopes ...
NODE+ (wireless sensor platform) is a first-generation handheld sensor measuring 1 inch in diameter and 3.75 inches wide that communicates wirelessly through low-energy Bluetooth 4.0 with Apple iOS devices.