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Fourier transform spectroscopy

About: Fourier transform spectroscopy is a research topic. Over the lifetime, 5418 publications have been published within this topic receiving 134133 citations.


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TL;DR: In this paper, the structure of lanthanum aluminosilicate (LAS) glasses, containing: (15−25) mol% La2O3, (15-35)mol% Al2O 3 and (40−70) mol % SiO2, were studied by 27Al nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FTIR).
Abstract: The structure of lanthanum aluminosilicate (LAS) glasses, containing: (15–25) mol% La2O3, (15–35) mol% Al2O3 and (40–70) mol% SiO2, were studied by 27Al nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FTIR). The effects of La2O3 and Al2O3 content on the properties and structure of the LAS glasses were evaluated. Al3+ ion enters into the glass structure mainly in fourfold co-ordination, forming ( AlO 4/2 ) − tetrahedra, and only in small amounts in fivefold and sixfold co-ordination. La3+ acts as network modifier, producing more non-bridging oxygen atoms as its content increases.

176 citations

Journal ArticleDOI
TL;DR: In this article, the principles of interference spectroscopy have been discussed in terms of interferometric Spectroscopy, and the authors propose a method for interferometry in spectroscopic spectra.
Abstract: (1979). The Principles of Interferometric Spectroscopy. Optica Acta: International Journal of Optics: Vol. 26, No. 12, pp. 1449-1449.

176 citations

Journal ArticleDOI
TL;DR: In this article, the rotational transitions of weak molecular complexes were observed by combining the techniques of microwave Fourier transform spectroscopy, a Fabry-Perot cavity, and a pulsed nozzle source of molecules.
Abstract: A new method of observing the rotational transitions of weak molecular complexes by combining the techniques of microwave Fourier transform spectroscopy, a Fabry–Perot cavity, and a pulsed nozzle source of molecules is described. High resolution and good sensitivity are achieved. Twelve isotopic species of the KrHCl molecule involving all combinations of the 86Kr, 84Kr, 82Kr, H, D, 35Cl, and 37Cl isotopes are assigned and the rotational constants, Cl nuclear quadrupole coupling constants, and centrifugal distortion constants are all given. The molecular structure indicates a linear equilibrium structure with the H(D) atom between the Kr and Cl atoms. However, the inverse moments of inertia measured here indicate large amplitude vibrations of the H(D) atom relative to the Kr–Cl internuclear line. Estimates of the Kr–Cl stretching frequency and force constants, which show considerable dependence on the isotopic species, are also given. Bending frequencies and force constants are also given.

175 citations

Journal ArticleDOI
TL;DR: In this paper, two-dimensional (2D) single-crystalline bismuth oxyhalides (BiOX, X = Cl, Br) micro-and nanostructures, such as nanoplates, nanosheets, and microsheets, were synthesized in a large scale by a simple wet chemistry approach of hydrogen peroxide (H2O2) direct oxidation of bulk metal Bismuth (Bi) particles in a mixed solution followed by a hydrothermal treatment.
Abstract: In this article, for the first time, two-dimensional (2D) single-crystalline bismuth oxyhalides (BiOX, X = Cl, Br) micro- and nanostructures, such as nanoplates, nanosheets, and microsheets, were synthesized in a large scale by a simple wet chemistry approach of hydrogen peroxide (H2O2) direct oxidation of bulk metal bismuth (Bi) particles in a mixed solution followed by a hydrothermal treatment, instead of previous coprecipitation of Bi salts route. The in-plane size and thickness of the 2D products can be conveniently tailored by varying the temperature and the concentrations of the Bi precursor. The products were characterized by a range of methods, such as X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission microscopy, energy-dispersive X-ray spectroscopy, selected area electron diffraction, thermogravimetric analysis, Fourier transform infrared spectra, and UV−vis diffuse reflectance spectra. The BiOBr nanoplates, nanosheets, and micr...

174 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202334
2022117
202171
202076
2019108
201888