The first use of the term "fingerprint" in relation to the Raman spectroscopy, to the best of my knowledge, is in an article published in 1947 about the Raman spectra of hydrocarbons by Fenske and coworkers. , wrote that the bands of the Raman spectrum, "which are called Raman lines, are characteristic of the substance illuminated and are therefore a "fingerprint" of that substance". From that time on, the points of identification, such as positions of peaks, shoulders and valleys create the characteristic spectral pattern which is known as the "Raman fingerprint" of a given material. This pattern allows the material classification, "without any preliminary information about composition and structural origin of the individual features" .