The stress and strain of inorganic materials such as Si films can be measured by Raman spectroscopy. Can we analyze the stress of organic materials such as polymer films by Raman spcetroscopy ?
dear sir
see the paper in link bellow, may be help you.
http://www.sciencedirect.com/science/article/pii/S0109564104001733
Its good question. How much thick Si- layers to which these analysis are applicable to? can you suggest any article?
Silicon is single or poly crystalline and so the Raman features are quite sharp and homogeneous. Small shifts due to strain are therefore relatively easy to measure and monitor. I imagine, in organic films, the bands are broader and more inhomogreneous, so it may be more difficult to monitor the effects of strain.
Could you dope/adulterate your polymer with carbon nanotubes? You could then use the shift of the 2D (G') peak from the CNTs to measure the strain, effectively using them as a strain gauge in your material?
(I realise this might be too complex a method, it may not be possible;e to easily make a CNT dispersion on your polymer - but CNTs do respond well in Raman to strain. Good luck!)
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