Fig. 12From: Photoinduced supramolecular chirality and spontaneous surface patterning in high-performance azo materialsPolarimetry results for irradiating the azo layer: a Polymer 1, b Polymer 2, and c Polymer 3. The longer the duration of illumination, the higher is the azimuthal rotation. However, the azimuthal rotation decreases in some cases after longer irradiation. The samples were irradiated by EPL with an ellipticity of either ε=15∘ or ε=22.5∘Back to article page