There is currently widespread interest in the vibrational spectroscopy of organized assemblies formed by long-chain amphiphiles. Oriented monolayers, bilayers, and multilayers have been studied by external or internal reflection spectroscopy with various experimental setups.
P. W. Yang, H. L. Casal, and H. H. Mantsch, "ATR Infrared Spectra of Oriented Sodium Laurate Multilayers," Appl. Spectrosc. 41, 320-323 (1987)