Hierarchical self-assembly of complex polyhedral microcontainers

David J Filipiak, Anum Azam, Timothy G Leong, David H Gracias
2009 Journal of Micromechanics and Microengineering  
The concept of self-assembly of a two-dimensional (2D) template to a three-dimensional (3D) structure has been suggested as a strategy to enable highly parallel fabrication of complex, patterned microstructures. We have previously studied the surface tension based self-assembly of patterned, microscale polyhedral containers (cubes, square pyramids and tetrahedral frusta). In this paper, we describe the observed hierarchical self-assembly of more complex, patterned polyhedral containers in the
more » ... rm of regular dodecahedra and octahedra. The hierarchical design methodology, combined with the use of self-correction mechanisms, was found to greatly reduce the propagation of selfassembly error that occurs in these more complex systems. It is a highly effective way to massproduce patterned, complex 3D structures on the microscale and could also facilitate encapsulation of cargo in a parallel and cost-effective manner. Furthermore, the behavior that we have observed may be useful in the assembly of complex systems with large numbers of components.
doi:10.1088/0960-1317/19/7/075012 pmid:20161118 pmcid:PMC2740998 fatcat:maftq5dxwjbgvhwe2rbyewg6bi