Application of the generalized two-dimensional correlation analysis to depth-profiling Raman microspectroscopy of multilayer polymer films

2000 ◽  
Author(s):  
Etsushi Akashige
Keyword(s):  
Correlation Analysis ◽  
Polymer Films ◽  
Depth Profiling ◽  
Raman Microspectroscopy ◽  
Two Dimensional

Generalized Two-Dimensional Fourier Transform Infrared Photoacoustic Spectral Depth-Profiling Analysis

1997 ◽  
Vol 51 (11) ◽  
pp. 1736-1740 ◽  
Author(s):  
Eric Y. Jiang ◽  
William J. McCarthy ◽  
David L. Drapcho ◽  
Richard A. Crocombe
Keyword(s):  
Correlation Analysis ◽  
Depth Profiling ◽  
Correlation Method ◽  
Digital Signal ◽  
Two Dimensional ◽  
Negative Band ◽  
Ft Ir ◽  
Correlated Signals ◽  
Profiling Analysis ◽  
2D Correlation Analysis

This paper reports the first application of a generalized two-dimensional (G2D) correlation method in photoacoustic spectral depth-profiling analysis of laminate/heterogeneous samples. In this method, photoacoustic magnitude spectra at different modulation frequencies are used to generate two-dimensional (2D) correlation spectra. The relative spatial origins of correlated signals are then determined from the signs of the corresponding contours. The unique features and advantages of this technique over previously reported depth-profiling methods are demonstrated and discussed. These include simplification of step-scan photoacoustic phase-modulation experiments as well as 2D correlation-analysis rules, avoidance of phase-related negative-band ambiguities, and enhancement of both spectral and depth resolutions, etc. The recently developed software-based digital signal-processing (DSP) technique for step-scan photoacoustic measurements offers an efficient means (sampling-depth multiplexing advantage) to collect within a single scan all necessary data for this type of 2D correlation analysis. Index Headings: Photoacoustic; PAS; Two-dimensional; Step-scan; FT-IR; Depth profiling; Polymer films; DSP.

scholarly journals On the dynamics and disentanglement in thin and two-dimensional polymer films

2007 ◽  
Vol 141 (1) ◽  
pp. 167-172 ◽  
Author(s):  
H. Meyer ◽  
T. Kreer ◽  
A. Cavallo ◽  
J. P. Wittmer ◽  
J. Baschnagel
Keyword(s):  
Polymer Films ◽  
Two Dimensional

Depth profiling studies of the surface directed phase decomposition in thin polymer films

Vacuum ◽  
1999 ◽  
Vol 54 (1-4) ◽  
pp. 303-307 ◽  
Author(s):  
J. Rysz ◽  
H. Ermer ◽  
A. Budkowski ◽  
M. Lekka ◽  
A. Bernasik ◽  
...  
Keyword(s):  
Polymer Films ◽  
Depth Profiling ◽  
Phase Decomposition ◽  
Thin Polymer Films ◽  
Thin Polymer
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