Special alcohols have been used as additives to study interfacial properties of cationic Gemini surfactant pentanediyl- 1, 5-bis (dimethyldodecylammonium bromide) (12-5-12). As these branched chain (in comparison with linear alcohols) are playing a measure roll in creating microemulsion surfactants. The surface tension values were measured by using ring detachment method. During the experiments...

In late August, behind closed doors at the austere National Academy of Sciences in Washington D.C., Samuel Stupp, a materials scientist and director of the Institute for BioNanotech-nology in Medicine at Northwestern University, showed a video clip for a committee evaluating the United States' billion-dollar-a-year National Nanotechnology Program. " Everyone was so quiet watching this movie. It...

Coarse grained models of monolayers of amphiphiles (Langmuir monolayers) have been studied theoretically and by computer simulations. We discuss some of the insights obtained with this approach, and present new simulation results which show that idealised models can successfully reproduce essential aspects of the generic phase behaviour of Langmuir monolayers.