Figure 8

Topographic line profiles of the membranes of 550 μm on S-AF45 glass (A) and of 560 μm on CE2000 glass (B). The transition of the first generation wrinkles into the second, i.e. the so-called wrinklon (red Y-shape in (C)), takes place between the dotted line and the bottom black line in (A,B). The dotted line indicates the maximum amplitude for the maximum number of wrinkles, while at the lower black line only half of the original number of wrinkles are present. x = 0 is the edge of the membrane, x > 0 is in the direction of the center of the membrane. y follows the rim of the membrane, and was converted into a straight line. The black trapezoid is the analysed area of the membrane as shown in (C). The height profile, i.e. amplitude in z-direction, is shown by the double arrow indicating 4 micrometer.