IntroductionRaman scattering is a powerful nondestructive technique that gives vibrational information about organic and inorganic materials. Raman scattering f
The sol-gel transition process of PMMA/SiO2 hybrid materials was first studied by means of the dynamic torsional vibration method. The different stages of the t
A new method based on angular momentum theory was proposed to construct the basis functions of the irreducible representations(IRs) of point groups. The transfo