8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-725-C7-728
Laser generation and detection of SAW at the surface of PMMAX. Zhang, C. Gan, D. Fei and S. Zhang
Institute of Acoustics, Laboratory of Modern Acoustics, Nanjing University, Nanjing 210008, China
The SAW velocity of PMMA as a function of temperature (25-75°C) and frequency (1.0-8.0MHz) is measured by the laser generation and detection technique. From the temperature dependence of the velocity two turning points are observed, one of which may be related to the β-transition of PMMA.
© EDP Sciences 1994