Patent Number: 8,877,072

Title: Three-dimensional fractal graduated-branching hierarchical structures and fabrication method thereof

Abstract: A method to fabricate a hierarchical graduated-branched structure that grows in a three-dimensional pattern down to fractal-branching, nano-size level is detailed. The fractal patterning is accomplished on a three-dimensional (i.e., non-planar) surface, by exposing the surface to a properly focused particle beam, which causes the spontaneous growth of graduated branches all over the surface. The structure can be fabricated with a single material and the fractal-patterning is done in a one step process. No addition of material is required for the formation of each branch. The fractal graduated branching structure can then be molded in order to produce replicas.

Inventors: Sahai; Ranjana (Somerville, MA), Corradi; Paolo (Noordwijk, NL)


International Classification: C23F 1/00 (20060101)

Expiration Date: 2019-11-04 0:00:00