# High-efficiency Nitrogen Oxidation (HNO3) Proposer's Day

Canonical: https://abierto.us/opportunities/darpasn2612

- Solicitation number: DARPA-SN-26-12
- Notice type: Special notice
- Status: Closed. Deadline was December 8, 2025
- Department: Department of Defense
- Agency: Defense Advanced Research Projects Agency
- Contracting office: Def Advanced Research Projects Agcy (HR0011)
- NAICS: 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- Product or service code: AC12 National Defense R&D Services; Department Of Defense - Military; Applied Research
- First posted: November 20, 2025
- Last posted: November 20, 2025
- SAM.gov: https://sam.gov/workspace/contract/opp/93aed3443a98462291d42b022f6d0633/view

## Description

The goals of the HNO3 Proposers Day are to:

(1) introduce the research community (industry, academia, and Government) to the HNO3 program vision and goals;

(2) explain the mechanics of a DARPA program and the milestones of this particular effort; and (3) encourage and promote teaming arrangements among potential organizations that have the relevant expertise, facilities, and capabilities for executing a research and development program responsive to the HNO3 program goals.

## Publications

- November 20, 2025: Special notice, due December 8, 2025. Notice 93aed3443a98462291d42b022f6d0633. https://sam.gov/workspace/contract/opp/93aed3443a98462291d42b022f6d0633/view

## Points of contact

- BAA Coordinator, HNO3@darpa.mil

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/darpasn2612.