Fig. 2
From: Giant intrinsic circular dichroism of prolinol-derived squaraine thin films

Micro-morphological characterization of ProSQ-C16 thin films. a, b Intermittent contact mode AFM images, and optical microscopy images c darkfield and d between crossed polarizers of typical ProSQ-C16 samples annealed at 180 °C. The optical microscopy images show the same sample area and are overexposed for better visibility. e Distribution of heights extracted from AFM image (b)