Helium spin-echo spectroscopy can directly quantify linewidths and lifetimes of surface vibrational modes, from Rayleigh waves on Ag(001) to vibrations of organic molecules, giving direct access to energy dissipation and coherence at interfaces.
Tamtögl et al. (Thu,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: