What are the differences between Raman spectroscopy of amorphous and crystalline carbon materials?
That is a very general question. Carbon materials involves a lot of material groups (diamond, graphene, nanotubes, fullerenes, organic compounds) all of which have their own chracteristics.
In general, a better-grown crystal will provide narrower Raman bands. For the intensity such a general statement cannot be made since some bands are strong for a good crystal (diamond line, G mode in sp2 carbon) and some only occur in defected material (D mode in sp2 carbon). For more specific details, please specify your material group first.
https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1026&context=mp_facpub
That is a very general question. Carbon materials involves a lot of material groups (diamond, graphene, nanotubes, fullerenes, organic compounds) all of which have their own chracteristics.
In general, a better-grown crystal will provide narrower Raman bands. For the intensity such a general statement cannot be made since some bands are strong for a good crystal (diamond line, G mode in sp2 carbon) and some only occur in defected material (D mode in sp2 carbon). For more specific details, please specify your material group first.
Raman makes it possible to distinguish graphite (bond sp2) from diamond (bond sp3), but he cannot distinguish the crystalline structure from the amorphous one.
However, there is a method of direct Visualization of Atoms, Molecules and Chemical Bonds, where both crystalline and amorphous structures are visible.
This is a picoscope, which is written in Russian:http://science-ua.com/gallery/maketn2.pdf
Or in English:https://DOI:10.1080/15421406.2019.1578510
Below I give a picture where graphite crystals are visible at the top and amorphous graphite below.
This is a new and very effective approach to solving your problem.
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