title: Design and fabrication of topologically complex, three-dimensional microstructures
abstract: Two concepts for use in the fabrication of three-dimensional (3D) microstructures with complex topologies are described. Both routes begin with a two-dimensional (2D) pattern and transform it into a 3D microstructure. The concepts are illustrated by use of soft lithographic techniques to transfer 2D patterns to cylindrical (pseudo-3D) substrates. Subsequent steps-application of uniaxial strain, connection of patterns on intersecting surfaces-transform these patterns into free-standing, 3D, noncylindrically symmetrical microstructures. Microelectrodeposition provides an additive method that strengthens thin metal designs produced by patterning, welds nonconnected structures, and enables the high-strain deformations required in one method to be carried out successfully.
authors.affiliation: R. J. Jackman, S. T. Brittain, G. M. Whitesides, Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, USA. A. Adams and M. G. Prentiss, Department of Physics, Harvard University, 9 Oxford Stree.
authors.initials: RJ
authors.lastname: Jackman
authors.initials: ST
authors.lastname: Brittain
authors.initials: A
authors.lastname: Adams
authors.initials: MG
authors.lastname: Prentiss
authors.initials: GM
authors.lastname: Whitesides