Morphology of pentadecanoic acid monolayers at the air/water interface studied by BAM

Brewster angle microscopy (BAM) provides the opportunity to visualize birefringence and long‐range orientational order in floating monolayers with the advantage over fluorescence microscopy that no probe molecules are required. The Figure shows the hexagonal domains formed during the compression of pentadecanoic acid monolayers. The method and its potential are discussed. magnified image