# Can cationic species form micelles?

Most of the books dive into formation of micelles by soaps. They go on talking about alkyl sulphate and carboxylates, but never do they mention anything about cations. My textbook says that at critical micelle concentration, molecules of colloid aggregate to form micelles.

Can things like $\ce{RNH4+}$ or $\ce{R4N+}$ form micelles, why/why not?