The Defense Advanced Research Projects Agency (DARPA) Defense Sciences Office (DSO) is soliciting proposals which investigate innovative approaches that enable revolutionary advances in science, devices, or systems for national security applications. Specifically excluded is research that primarily results in evolutionary improvements to the existing state of practice.
Additional eligibility information: All responsible sources capable of satisfying the Government's needs may submit a proposal that shall be considered by DARPA. See the Eligibility Information section of the BAA for more information.
Each funder sets its own eligibility, so check the details on their page before you apply.