EPIR Technologies, Inc. - formerly known as Smart Pixel - develops and manufactures optoelectronic materials and sensors for defense and civilian sectors. Fairly SBIR-active across several agencies, the firm offers infrared detectors/sensors, such as single element detector/cooler packages on cadmium zinc telluride and silicon substrates, single element high operating temperature detectors, and HgCdTe detector structures on CdZnTe and Si substrates; biosensors, including detection nanosensors for biological warfare agents in buildings and HVAC systems; and solar cells for space, commercial, and residential applications. The company also provides wafer polishing services, including epi-ready polished substrates, crystal polishing systems, and polishing slurries engineered for soft semiconductor materials; and research and development services for government and industrial customers. In addition, it offers epitaxial products and services, such as fabricating semiconductor epitaxial layers on silicon, gallium arsenide, and bulk cadmium zinc telluride substrates; device-quality silicon-based composite substrates for HgCdTe deposition; HgCdTe/Si epitaxial products; and HgCdTe/CdZnTe epitaxial products.