Turbulencelike scaling in polymer interfaces

The spatial structure and statistical properties of polymer interfaces grown by vapor deposition polymerization have been studied in the context of fluid turbulence. The extended self-similarity present in the correlation functions of the polymer interface uncovers two types of multiscaling for different spatial scales. The relative qth-order scaling exponents and the probability distribution functions of the height gradient display intermittent height fluctuations, which lead to spatial multiscaling analogous to the velocity fluctuations in turbulent fluid.