[Front cover]

The cover displays images showing the variation in the surface displacement of a 1-3 connectivity piezoelectric composite transducer as a function of temperature. In each case the magnitude and phase of the surface displacement of an area of 3x3 ceramic pillars being driven at the fundamental thickness mode is shown. At room temperature, the magnitude and phase indicate that the device displacement is uniform and the pillars and the polymer are acting in phase. At elevated temperature, beyond the glass transition temperature of the polymer filler, it is clear that the ceramic pillars and polymer are displacing out of phase. Images courtesy of Richard L. O´Leary, Agnes C.S. Parr, and Gordon Hayward, Centre for Ultrasonic Engineering, Dept. of Electronic and Electrical Engineering, Glasgow, United Kingdom. See article on page 550.