Applications of Near Infrared Radiation Spectroscopy- A Review

[ O.H. Wheeler., 1960] Theory & Principles:[2]A spectroscopic technique known as near-IR (NIR) is based on molecular overtones and combinations of vibrations of CH, О-H, and N-H.A normal mode of vibration for a specific molecule involves inner atomic motions in which every atom move in phase at...

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Published inJournal of pharmaceutical sciences and research Vol. 16; no. 1; pp. 1 - 5
Main Authors Sri, K Bhavya, Manusha, G, Anil, D, Sumakanth, Mogili
Format Journal Article
LanguageEnglish
Published Cuddalore Journal of Pharmaceutical Sciences and Research 01.01.2024
Subjects
Acoustics
Arsenic
Energy
Fatty acids
Food quality
Gallium arsenide
Indium antimonide
Infrared radiation
Light emitting diodes
Organic chemicals
Photovoltaic cells
Quality control
Semiconductors
Sensors
Spectrum analysis
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Summary:[ O.H. Wheeler., 1960] Theory & Principles:[2]A spectroscopic technique known as near-IR (NIR) is based on molecular overtones and combinations of vibrations of CH, О-H, and N-H.A normal mode of vibration for a specific molecule involves inner atomic motions in which every atom move in phase at the same frequency but with varying amplitudes.Overtonesare additional vibration transitions that correspond to these regular vibrations.The sample material interacts with NIR light (800-2500 nm)Near-infrared energy-absorbing molecules oscillate in two modes [Franklin EB.,2002] Stretching: The Constant Change in Intraatomic SeparationAround the Meridian of Bonding between each of Two Atoms is what it specifies. [...]filters are required to reduce visible radiation, which aids in preventing unneeded sample heating. The benefits in this source are that it is inexpensive and easily accessible, and that these lamps cannot increase their output of energy as the source's voltage is raised. Since a wavelength of interest may be chosen, the current wave length selection look at can be used to assess the instrument's capabilities.LEDs emit light with a certain wavelength, although it is a broad spectrum of energy. Since LEDs and filters work well together as wavelength selectors and are inexpensive, highly effective, and portable, low-cost devices without moving parts can be made. The signal-to-noise ratio at a specific electrical frequency or within an 1HZ band while 1 watt of radiant energy is applied to a lcm2 active area detector is known as the detectity.
ISSN:0975-1459