A combined methodology of Terahertz spectroscopy and Density functional theory based
simulations is presented for a molecule to determine its molecular vibration frequency and
associated configuration. A case study of diglycidylether of bisphenol A, which is an
important ingredient of epoxy resin, has been presented in this manuscript. Apart from
determination of absorbtion peaks in the THz regime both through experiment and
simulation, the vibration configuration corresponding to each of the peaks are also …