T. Masubuchi et al., Nanometer-nanosecond oscillatory expansion and contraction behavior of polymer films induced by 248 nm excimer laser excitation, CHEMPHYSCHE, 1(3), 2000, pp. 137
Microregional mechanical measurements of a poly[methylmethacrylate) film ca
n be made by a combined probe/measurement laser system, as represented in t
he picture. The localized nature of the laser systems allow quantification
of the degree of expansion and contraction processes, as well as the glass-
rubber transition. Such nondestructive techniques lead to the elucidation o
f polymer morphological dynamics.