Accurate determination of the hydrogen concentration of silicon nitride layers by Fourier transform spectroscopy

1998 ◽  
Author(s):  
Ingrid Jonak-Auer ◽  
Friedemar Kuchar
Keyword(s):  
Fourier Transform ◽  
Silicon Nitride ◽  
Hydrogen Concentration ◽  
Accurate Determination ◽  
Fourier Transform Spectroscopy ◽  
Nitride Layers

scholarly journals i-Rheo: determining the linear viscoelastic moduli of colloidal dispersions from step-stress measurements

2020 ◽  
Vol 22 (7) ◽  
pp. 3839-3848
Author(s):  
Rodrigo Rivas-Barbosa ◽  
Manuel A. Escobedo-Sánchez ◽  
Manlio Tassieri ◽  
Marco Laurati
Keyword(s):  
Fourier Transform ◽  
Accurate Determination ◽  
Colloidal Dispersions ◽  
Stress Measurements ◽  
Viscoelastic Moduli ◽  
Linear Viscoelastic ◽  
The Fourier Transform

The Fourier transform-based method ‘i-Rheo’ allows the accurate determination of material viscoelastic moduli from step-stress measurements.

Determination of a High Potential Barrier Hindering Internal Rotation in 2-Methylcyclopentanone and α-Methyl-γ-Butyrolactone by Microwave Fourier Transform Spectroscopy

1992 ◽  
Vol 47 (6) ◽  
pp. 761-764 ◽  
Author(s):  
J. L. Alonso ◽  
N. Heineking ◽  
H. Dreizler ◽  
N. Heineking ◽  
H. Dreizler
Keyword(s):  
Fourier Transform ◽  
Internal Rotation ◽  
Excited States ◽  
Fourier Transform Spectroscopy ◽  
Vibrationally Excited ◽  
Methyl Group ◽  
Internal Rotation Barrier ◽  
High Potential Barrier ◽  
Method Analysis

AbstractThe microwave spectra of α-methyl-γ-butyrolactone and 2-methylcyclopentanone have been reinvestigated using microwave Fourier transform spectroscopy. A-E splittings due to internal rotation of the methyl group have been observed in the ground and several vibrationally excited states for both molecules. From an internal-axis-method analysis of these splittings, values of the methyl group internal rotation barrier of 2.61 kcal mol-1 for α-methyl-γ-butyrolactone and 2.41 kcal mol-1 for 2-methylcyclopentanone have been obtained.

Sign in / Sign up

Export Citation Format

Share Document