Fig. 5: Estimated and experimental phonon lifetime in the nanostructure for branch S2.
From: The effect of echoes interference on phonon attenuation in a nanophononic membrane
Experimental data for the NS membrane (red circles) are compared with an estimation based on adding the simulated τcoh to the lifetime of the uniform membrane (black diamonds); see Eq. (2). Light blue stars connected by dashed lines are the results obtained by adjusting B and η to account for different parameters in the NS sample (see text). Error bars on the experimental data come from the fit uncertainties, while for the estimation and the fit, they result from uncertainty propagation in Eq. (2). The corresponding wavelengths are reported in the upper horizontal axis.
