Special Notice NATIONAL AERONAUTICS AND SPACE ADMINISTRATION is soliciting inquiries from companies interested in obtaining license rights to commercialize, manufacture, and market the technology of epitaxy of SiGe and other compound semiconductors. This technology enables the growth of various semiconductors on specific substrate wafer materials, with a focus on SiGe crystal materials for aerospace applications. The technology includes methods for growth, detection, and mapping of crystal twin defects, as well as physical vapor deposition growth methods. Interested parties can submit a license application through NASA's Automated Technology Licensing Application System (ATLAS). No follow-on procurement is expected from this notice. For more information, visit the NASA Technology Transfer Portal.