J. Phys. IV France 117 (2004) 65-72
FT-IR/PAS in analysis of CD discsJ. Ryczkowski, S. Pasieczna and B. Peregryn
University of Maria Curie-Sklodowska, 20-031 Lublin, Poland
Compact disc (CD) represents new optical recording technology, and has the advantage of being able to record an enormous amount of data. Depending on the kind of CD (e.g., recordable - CD-R, rewritable - CD-RW) it is characterized by a different structure. Photoacoustic (PA) spectroscopy in an infrared region (FT-IR/PAS) was applied for the inspection of the surface of different CDs. Analyzed CD's samples were taken from polycarbonate substrate, recorded and non-recorded areas. Observed surface changes are due to recording process.
© EDP Sciences 2004