Particulate and Multiphase Processes | Apply Online

Opportunity Summary:

The National Science Foundation (NSF) Particulate and Multiphase Processes program funds research that explains and improves how systems behave when they involve multiple phases (for example gas-liquid-solid mixtures) or discrete entities like particles, droplets, or bubbles moving and interacting. The program backs both fundamental and applied work, meaning it is interested in basic mechanisms (the underlying physics, chemistry, and transport phenomena) as well as research that leads to better designs, better prediction, higher efficiency, and tighter control of real processes that depend on particulate or multiphase behavior. The scope is broad and includes granular and granular-fluid flows, particle/bubble/droplet dynamics, aerosols and aerosol technology, suspensions, micro- and nano-structured fluids, and the self- or directed assembly of particulate-based nanostructures. It also explicitly welcomes proposals that create or use enabling instrumentation, diagnostics, and measurement approaches needed to observe these systems and validate models.

A major theme of the opportunity is pushing into areas where particulate and multiphase science becomes especially challenging or high-impact, particularly at micro and nano scales. NSF highlights interest in frontiers tied to nanotechnology, new manufacturing methods, and nano metrology, along with applications in multiphase transport in biological systems, environmental sustainability, critical infrastructure, and other complex engineered systems. In practice, this means proposals are expected to go beyond incremental improvements and instead show what new understanding or capability will be unlocked, why the approach is innovative, and how the outcomes could change the way a process is designed or operated. Competitive projects, as described, tend to pair a strong scientific foundation with a clear path to practical relevance, such as improved process predictability, better control strategies, safer materials handling, more efficient separations, or more reliable manufacturing and scale-up.

NSF also signals what kinds of projects are most attractive from a review standpoint. Collaborative and interdisciplinary work is encouraged, and proposals that integrate experimental and theoretical components are described as more likely to be funded than projects that are purely one or the other. That reflects the realities of the field: these systems are notoriously difficult to measure and to model, so reviewers often look for tight coupling between experiments (to reveal mechanisms and validate behavior) and modeling or theory (to generalize results, connect scales, and enable prediction). The program encourages unsolicited proposals, meaning investigators can propose ideas within the stated scope without needing a special solicitation topic, and it also encourages industry partnerships, including submissions through the GOALI mechanism (Grant Opportunities for Academic Liaison with Industry), which is designed to strengthen academia-industry collaboration.

The current focus areas called out in the announcement include four clusters. First are multiphase flow phenomena, especially the dynamics and interactions of particles, bubbles, and droplets, along with structured fluids such as colloids and ferrofluids, and approaches for self- or directed assembly of particles into functional devices. Second is particle science and technology, covering aerosols, methods for producing particles with engineered properties, building functional materials and devices through particle assembly, and research tied to environmental concerns and nanotoxicology. Third is multiscale modeling of multiphase systems, with emphasis on new approaches that connect micro- and nanoscale mechanisms and properties to process-level variables that engineers actually use to design and operate equipment. Fourth is multiphase transport in biological systems, especially the use of functionalized nanostructures for clinical diagnostics and therapeutics, which points toward work at the intersection of transport, interfaces, and biomedical engineering.

On award structure and timing, unsolicited research awards are typically one to three years in duration, with an average annual award size of about $100,000. The program will also consider small equipment proposals under $100,000, but they must be submitted during the same submission windows as research proposals. A key administrative detail is that proposals submitted outside the announced window dates are returned without review, so timing is treated as a hard requirement rather than a preference. The historic annual submission window described is August 15 through September 15. Separate from that, NSF CAREER proposals in engineering have a July deadline each year and run for five years, making CAREER the main long-horizon option for early-career faculty pursuing an integrated research and education plan aligned with particulate and multiphase topics.

The opportunity also notes other NSF proposal types and how they are handled. Conference, workshop, and supplement proposals may be submitted at any time, but applicants are expected to discuss them with the program director before submission. Likewise, RAPID (Rapid Response Research) and EAGER (Early-concept Grants for Exploratory Research) mechanisms are available and replace the older SGER mechanism; both require prior discussion with the program director before submitting. Finally, the solicitation points applicants to NSF policy guidance for proposal preparation, specifically the Proposal and Award Policies and Procedures Guide (PAPPG) referenced in the announcement.

In terms of eligibility and agency information, the sponsor is NSF and the program falls under the Engineering Grants CFDA listing (47.041). Eligibility is described as unrestricted, meaning a wide range of applicant entity types may apply as long as they meet NSF requirements and any constraints stated in the full program guidance. Cost sharing is not required. The posted materials referenced here are archived (with the original closing date in 2009 and an archive date in 2010), but the program description captures the core technical priorities and proposal expectations that typically carry forward in updated program listings and successor announcements.

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