Block copolymer ink formulation for 3D printing and method of making a 3D printed radiofrequency (RF) device

Abstract

An ink formulation for 3D printing comprises a triblock copolymer in a solvent, where the triblock copolymer includes end blocks comprising an aromatic or acrylate polymer and a midblock between the end blocks comprising an aliphatic polymer. The ink formulation exhibits a shear thinning threshold of about 0.02 rad/sec or less. A method of making a 3D printed radiofrequency (RF) device comprises extruding an ink formulation from a deposition nozzle moving relative to a substrate, where the ink formulation comprises a triblock copolymer in a solvent and the triblock copolymer includes end blocks comprising an aromatic or acrylate polymer and a midblock between the end blocks comprising an aliphatic polymer. One or more continuous filaments comprising the ink formulation are deposited in a predetermined pattern on the substrate, and the ink formulation is treated to remove or cure the solvent, thereby forming a printed RF device.

Dependencies are inferred from the claim text.