Fig. 4 | Scientific Reports

Fig. 4

From: Investigating the link between a layer thickness and surface relief depth in an azo poly(ether imide)

Fig. 4

(a) Photographs of the sample surfaces after holographic recording observed under white light; PI-Az-2—on the left, PI-Az-3—in the middle, PI-Az-4—on the right. (b-d) The topography profiles taken along the intentionally made scratches (located at ca. x = 0) and along the whole holographically-exposed areas of the (b) PI-Az-2, (c) PI-Az-3, (d) PI-Az-4 surfaces; the arrow “SL” indicates the substrate level; the enlargement of the surface profiles in the central regions along a ca.100 µm distance in the insets.

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