Quality control of conductive ink distribution using terahertz spectroscopy

Abstract

In this work, we are studying novel terahertz (THz) spectroscopic methods for quality control of printable electronics suitable for the industrial environment. Using a metallic checkboard metamaterial laying out the Babinet principle transmission, we demonstrate that THz waves are very sensitive for probing ink distribution, and may represent a future solution for replacing the optical microscope in the in-situ ink distribution tracking for printable electronic production