We model the effect of substrate strain patterning on the self-assembly of quantum dots (QDs). When the surface energy is isotropic, we demonstrate that strain patterning via embedded substrate inclusions may result in ordered, self-organized QD arrays. However, for systems with strong cubic surface energy anisotropy, the same patterning does not readily lead to an ordered array of pyramids at long times. We conclude that the form of the surface energy anisotropy strongly influences the manner in which QDs self-assemble into regular arrays.
Bibliographical noteFunding Information:
We gratefully acknowledge the support of the National Science Foundation through the Center for the Design of Nanoscopic Materials, Grant DMR0080016, and the Divisions of Materials Research and Mathematical Sciences.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)