The National Science Foundation (NSF) is seeking grant applications for the Materials Engineering and Processing (MEP) program, which supports fundamental research on the processing and performance of engineering materials. The program is interested in proposals that investigate the interrelationship between materials processing, structure, properties, and life-cycle performance for targeted applications, including manufacturing processes, novel nanoscale material production, and the utilization of biological processes or advanced computing techniques. Proposals should consider cost, performance, and feasibility of scale-up, and research plans should be driven by scientific hypotheses. The program is not appropriate for proposals on electronic materials for energy storage or conversion, but it does welcome research on multifunctional material performance that includes a consideration of mechanical performance. Successful grant applicants may receive funding ranging from $250,000 to $650,000, with project periods spanning 3-5 years. The awards will support project grants focused on developing advanced technologies, exploring scientific phenomena, and creating innovative solutions to complex engineering challenges. Eligible applicants include academic institutions, research organizations, and other eligible entities across the United States.