The evolution of the domain structure of two azobenzene-containing materials during irradiation with polarized light was monitored using polarized optical microscopy with additional λ-waveplate for discerning the domains oriented parallel and perpendicular to irradiating light polarization. It is shown that the process of photo-orientation consists in growth of perpendicularly oriented domains and diminishing of parallel domains via the movement of domain boundaries. These data confirm the mechanism of photo-orientation via domain structure rearrangement.

中文翻译：

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含偶氮苯的材料中光取向过程域重排机理的直接显微观察

使用偏振光学显微镜和附加的λ波片，可以监测两种含偶氮苯的材料在偏振光照射过程中的畴结构演变，以辨别平行于和垂直于照射光偏振的畴。结果表明，光取向过程包括垂直取向的畴的生长和通过畴边界的移动而减少的平行畴。这些数据证实了通过畴结构重排的光取向机理。