ABSTRACT
Raman spectroscopy has been utilized in the characterization of graphite since 1970 [1]. The technique was therefore ready to be used in the study of carbon nanotubes and graphene from a very early stage in the research on these materials. Shortly after the synthesis of multi-walled ([13] of Chapter 1) and single-walled ([14,15] of Chapter 1) carbon nanotubes in 1991 and 1993, Raman spectroscopy was utilized as a tool for characterization [2]. Raman spectroscopy has also been utilized in the characterization of graphene at an early stage [3] and has been widely used as a method to characterize graphene ever since [4]. In both cases (graphene and carbon nanotubes) the popularity of Raman spectroscopy stems from the fact that it is fast, cheap (relatively speaking), non-destructive, does not require the use of specific environmental conditions such as low temperature or vacuum and reveals a wealth of information about the samples studied.
