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Updated: Jul 27, 2026
07:44
Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
Published on: April 28, 2016
Rotational invariants for polarized Raman spectroscopy
S Frisk1, R M Ikeda, D B Chase
1Dept. of Materials Science and Engineering, University of Delaware, Newark, Delaware 19711, USA.
Applied Spectroscopy
|November 13, 2003
Summary
A novel method quantifies orientation-independent Raman intensity, enabling spectral analysis of morphological changes. This technique mirrors infrared spectroscopy's structural absorbance for clearer material characterization.
Area of Science:
- Spectroscopy
- Materials Science
- Polymer Science
Background:
- Polarized Raman spectroscopy is sensitive to molecular orientation.
- Quantifying morphological changes independently of orientation has been challenging.
- Structural absorbance in infrared spectroscopy offers a precedent for orientation-independent analysis.
Purpose of the Study:
- To develop a method for determining orientation-independent Raman scattered intensity.
- To enable the observation of spectral changes solely due to morphological variations.
- To provide a tool for analyzing materials with differing molecular orientations.
Main Methods:
- Utilizing various polarized Raman measurements.
- Developing a theoretical framework for calculating orientation-independent Raman intensity.
- Applying the method to polymer fiber samples with varying morphologies and orientations.
Main Results:
- Successful determination of orientation-independent Raman scattered intensity.
- Demonstration that spectral changes correlate uniquely with morphological differences.
- Validation of the method using polymer fibers processed under diverse conditions.
Conclusions:
- The new method provides an accurate way to assess morphological changes using Raman spectroscopy.
- This technique overcomes limitations posed by sample orientation differences.
- It offers a valuable approach for material characterization, analogous to structural absorbance in IR spectroscopy.
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