气-液界面表面活性剂单分子膜BAM图像的模拟计算

对界面上不同结构缺陷所引起的分子排列和取向进行了组合,建立了分子的取向模型,利用光传播的电磁场理论,模拟出了布儒斯特角显微镜(BAM)的理论图像,并将其与实验观察得到的BAM图像进行了比较。结果显示:理论计算图像与实际BAM观察结果基本一致;复杂的BAM图案可由点缺陷和线缺陷组合得到。

Simulation of BAM Images of Surfactant Monolayers at Air-Water Interface

The aggregation domains and the texture patterns of surfactant monolayers at the air-water interface can be observed directly by Brewster angle microscopy(BAM).These images are optical outcomes which result from the deviation of molecular aggregation states and orientations from the perfect crystal structures at the surface.The information of these states and the orientations might be provided via utilizing the BAM patterns. This work investigated the combination of the arrangements and the orientations of surfactants caused by different structure defects at surface,built up the models of orientational molecules,simulated the BAM images with the help of electromagnetic theory and compared them with the(experimental) BAM images.Results show that the theoretical simulation images are consistent with the(experimental) images observed by BAM generally and the complicated BAM images can be obtained by(combining) the spot defects and the line defects.