Broadband terahertz dielectric spectroscopy of alcohols

We have studied the complex dielectric properties of a series of alcohols in 0.5–10 THz frequency range using THz time-domain spectroscopy. The dielectric response observed has contribution from a Debye relaxation process and three damped harmonic oscillators. Combination of experimental observations, all-atom molecular dynamics simulations and ab initio quantum calculations reveals that the complex dielectric spectra of alcohols result from a...