Microwave Emission from Metal Photonic Crystals Fabricated by using Stereolithography

Abstract

Micro-scale photonic crystals composed of pure copper for microwave emission control were fabricated by using micro-stereolithography system and sintering process. As a crystal structure, we designed diamond lattice structure with or without stretched lattice spacing. Diamond lattices exhibited common bandgap where electromagnetic wave can not propagate at any direction. Stretched lattices showed directional transmission property. Simulated and measured transmission properties of microwave propagating through the metal photonic crystals showed good agreements.

Keywords:

• Metal photonic crystal
• electromagnetic band gap
• micro stereolithography
• microwave
• terahertz frequency