Modeling and simulation of atmosphere interference signal based on FTIR spectroscopy technique

2016 ◽  
Author(s):  
Yugui Zhang ◽  
Qiang Li ◽  
Zhengyang Yu ◽  
Zhengmin Liu
Keyword(s):  
Modeling And Simulation ◽  
Ftir Spectroscopy ◽  
Interference Signal ◽  
Spectroscopy Technique

scholarly journals Facile and fast determination of Si/Al ratio of zeolites using FTIR spectroscopy technique

2021 ◽  
Vol 311 ◽  
pp. 110683
Author(s):  
Yik-Ken Ma ◽  
Severinne Rigolet ◽  
Laure Michelin ◽  
Jean-Louis Paillaud ◽  
Svetlana Mintova ◽  
...  
Keyword(s):  
Ftir Spectroscopy ◽  
Spectroscopy Technique ◽  
Fast Determination

scholarly journals Characterization of In(Ga,Al)As/GaAs metamorphic heterostructures for mid-IR emitters by FTIR photoreflectance spectroscopy

2021 ◽  
Vol 2086 (1) ◽  
pp. 012140
Author(s):  
D D Firsov ◽  
M Yu Chernov ◽  
V A Solov’ev ◽  
O S Komkov
Keyword(s):  
Electric Field ◽  
Ftir Spectroscopy ◽  
Critical Point ◽  
Free Carrier ◽  
Interband Transitions ◽  
Spectroscopy Technique ◽  
Fabry Perot ◽  
Contactless Control

Abstract Infrared photoreflectance (PR) spectra of In(Ga,Al)As/GaAs metamorphic heterostructures have been obtained using a novel photomodulation FTIR spectroscopy technique. An analysis of the PR spectra features allowed us to estimate the critical point energies corresponding to the direct interband transitions in various regions of the In(Ga,Al)As heterostructures, and distinguish the PR signals originating from Fabry-Perot interference. Observation of Franz-Keldysh oscillations originating from the InAlAs virtual substrate and an InGaAs waveguide layer has enabled determination of the built-in electric field intensities within the heterostructures. The obtained results open up possibilities for contactless control of free carrier concentration in In(Ga,Al)As/GaAs metamorphic heterostructures developed for growth of emitters of mid-IR spectral range.

scholarly journals Application of FTIR spectroscopy for analysis of the quality of honey

2018 ◽  
Vol 10 ◽  
pp. 02008 ◽  
Author(s):  
Monika Kędzierska-Matysek ◽  
Arkadiusz Matwijczuk ◽  
Mariusz Florek ◽  
Joanna Barłowska ◽  
Anna Wolanciuk ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Ftir Spectroscopy ◽  
Coming Out ◽  
Analytical Methods ◽  
Molecular Spectroscopy ◽  
Analytical Techniques ◽  
Spectroscopy Technique ◽  
The World ◽  
Mode Of Production

Every kind of honey is a very precious natural product which is made by Mellifera bees species. The chemical composition of honey depends on its origin or mode of production. Honey consists essentially of different sugars, predominantly fructose and glucose. There are also non – sugar ingredients like proteins and amino acids, as well as some kind of enzymes, such as: invertase, amylase, glucose oxidase, catalase and phosphatase. The fact that honey is one of the oldest medicine known worldwide is remarkable. Scientists all over the world have been trying to improve analytical methods as well as to implement new ones in order to reaffirm the high quality of honey the benefits of which may be distracted or disturbed. There are many methods and popular analytical techniques, including as follows: mass spectroscopy and molecular spectroscopy (especially FTIR spectroscopy). The infrared spectroscopy technique is one of the most common analytical methods which are used to analyse honey nowadays. The main aim of the task was to use ATR-FTIR infrared spectroscopy to compare selected honey samples as well as typical sequences coming out from certain functional groups in the analysed samples.

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