Figure 6. Dynamical mechanical spectra (DMS) of LPDE surface measured under fast changing temperature.

(a) the storage and (b) loss moduli for frequencies of 51, 205, and 297 Hz are shown as a function of time. A sharp drop of the modulus is the time of adding ethanol (at t = 200 second), which created near-instant heating of the medium (and consequently, the surface) by ~15 °C. Examples of DMS for (c) storage and (d) loss moduli shown with the time increment of 1.9 sec.