Reversed crystal growth of ZnO microdisks

by Self, K.; Zhou, H. J.; Greer, H. F.; Tian, Z. R.; Zhou, W. Z.

Hexagonal ZnO microdisks are grown and then selectively dissolved to form microstadiums. Analysis of the growth and dissolution of the microdisks revealed that they follow a reversed crystal growth mechanism, i.e. aggregation of precursors followed by surface crystallization and extension of crystallization from the surface to the core.