everal manufacturing technologies that S support rapid prototyping have recently become available both in research laboratories and in the commercial marketplace. These technologiesvariously called layered manufacturing, additive manufacturing, and stereolithography-allow a part, prototype, or tool to be built by laying down material in a gradual, controlled way. By contrast, traditional man-

Metal-coated polymers shaped by 3D stereolithography are introduced as a new manufacturing method for passive components for millimeter to terahertz electromagnetic waves. This concept offers increased design capabilities and flexibilities while shortening the manufacturing process of complex shapes, e.g., corrugated horns, mirrors, etc. Tests at 92.5, 140, and 170 GHz are reported.

Most current additive manufacturing processes can only process one material in one build. Few of them are able to fabricate multiple materials and composites, with limited choices of materials. In this research, we propose a novel Projection based Electro-Stereolithography (PES) process, which is able to fabricate composites with high resolution and fast speed, and a big range of material choic...