Shielded Infrared-Windows using Polymers with Copper-Like Conductivity

"There are three important parameters in the design of an IR window shielding layer: shielding effectiveness in the electromagnetic interference (EMI) and radar frequency range, mid-infrared (IR) transmissivity through the shielding layer, and durability ofthe shielding layer. To ensure effectiveness and reliability, the design of the shielding layer has to take these three parameters into account simultaneously, particularly the first two. In Phase I, we propose a novel design that addresses the aboveparameters, reduce the design to practice by applying the shielding layer onto the appropriate substrates, followed by a hardening process, and use the necessary techniques to determine performance characteristics. The proposed work is based on newprocesses that produce easily copper-like conductivity in intrinsically conductive polymers. This will serve as a guideline for the Phase II work, in which we will optimize the shielding layer, deposition process and durability characteristics, and byapplying it onto IR window materials. Once electrical and optical requirements are met, a scale up design will be developed as a part of the Phase II program towards commercialization of the technology. In addition to missile domes and space-based IRsystems, a high performance IR window shielding layer with high transmissivity would be highly beneficial for reliable operation of a variety of military and commercial IR detectors, seekers and sensors