InterJournal Complex Systems, 520
Status: Accepted
Manuscript Number: [520]
Submission Date: 20501
Revised On: 20507
A two-dimensional rough surface: Experiments on a pile of rice
Author(s): Christof Aegerter ,Rinke Wijngaarden ,Radboud Gunther

Subject(s): CX.08, CX.24, CX.03

Category: Article

Abstract:

Dynamical roughening of interfaces has received much attention in recent years. However, experiments have been restricted to one dimensional (1d) systems. Moreover, theoretical studies of the two dimensional (2d) case have been highly inconclusive. Here we introduce an experimental 2d system, with which the theories can be tested. As is shown, the surface of a 2d pile of rice shows roughening behaviour in both space and time, with a roughness exponent $alpha_{2d}$ = 0.39(3) and a growth exponent $eta_{2d}$ = 0.27(3).

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