Ceramic synthetic substrates using solid freeform fabrication Academic Article uri icon


  • Three-dimensional (3-D) printing techniques were used to create lost molds for advanced inhomogeneous materials made of ceramics. The utility of this process is the ability to manipulate low-loss materials, such as alumina illustrated here, into precise, fine features as periodic macroscopic inclusions in a larger host material or air. Three periodic structures were formed using solid freeform (SFF) fabrication techniques; a two-dimensional (2-D) all-dielectric electromagnetic bandgap (EBG) substrate, a 2-D metallo-dielectric substrate filter, and a 3-D woodpile EBG structure. The design of these structures is discussed and the fabricational steps are presented in detail. This process has been utilized to develop a simple two-pole filter embedded in a substrate at 10 GHz, a single resonator at 30 GHz, and a 3-D bandgap structure from 88 to 115 GHz. The wide range of features and structures that can be accurately fabricated are highlighted.

published proceedings


altmetric score

  • 3

author list (cited authors)

  • Chappell, W. J., Reilly, C., Halloran, J., & Katehi, L.

citation count

  • 7

complete list of authors

  • Chappell, WJ||Reilly, C||Halloran, J||Katehi, LPB

publication date

  • March 2003