@article{121101, author = {H. N. Patrick and G. G. Warr and S. Manne and I.A. Aksay}, title = {Surface micellization patterns of quaternary ammonium surfactants on mica}, abstract = { The microscopic equilibrium structures of adsorbed films of quaternary ammonium surfactants on mica have been investigated by noncontact atomic force microscopy imaging as a function of alkyl chain length and headgroup structure. Spherical and cylindrical surface micelles were observed; these were found to be related to bulk. solution self-assembly and the surfactant packing parameter, v/a(0)l(c). Shape transitions in the surface aggregates were observed on changing the counterion between chloride, bromide, and salicylate. }, year = {1999}, journal = {Langmuir}, volume = {15}, pages = {1685-1692}, month = {03/1999}, isbn = {0743-7463}, language = {eng}, }