Investigate strain effects in a moire system composed of honeycomb lattices. We elucidate the formation of a nearly perfect one-dimensional moiré pattern in a twisted bilayer system. The formation of such patterns is the result of the interplay between torsion and strain that causes the collapse of the reciprocal spatial unit cell. As a criterion for such decay, we find a simple relationship between the two quantities and the material-specific Poisson’s ratio. The induced one-dimensional behavior is usually characterized by two inconsistent periodicities. Our results provide an explanation for the complex pattern of one-dimensional channels observed in low-angle twisted bilayer graphene systems and twisted bilayer dicalgenides. Our findings are applicable to arbitrary hexagonal twisted moiré patterns and are easily extended to other geometries.
