Symposium FF06—Advances in the Fundamental Understanding and Functionalization of Reactive Materials
Reactive materials are typically composites that, upon some initial energy input, produce a self-supporting reaction that releases energy in the form of heat, light, and/or pressure. These materials are unique in the world of energetic materials – unlike explosives, the reaction fronts propagate sub-sonically, but due to highly refined mixing length scales, they can reflect higher kinetic rates than propellants. This regime represents reaction rates that are tailorable over six orders of magnitude. To specify use in diverse fields including joining/welding, pyrotechnics, transient electronics, or medicine, researchers pursue precise control over the reactive behavior. Innate material characteristics like reactant periodicity, stoichiometry, and architecture enable tuning and control of reactivity, based on the subject application. New methods for control of architecture, stoichiometry, or reactant spacing are now available and have provided intriguing new avenues for reaction tuning or for functionalizing the reaction and its products. Similarly, the application of new diagnostics with extreme spatial and temporal resolution allow for collection of data particularly valuable to atomistic- and highly-resolved continuum-level simulations of thermal and mass transport. With the routine, practical use of these advanced methods reaching prevalence, the factors enabling reaction tuning require reassessment, defining a novel field of research for the community. This symposium will focus on the latest research on processing, characterization, and modeling of reactive materials, with emphasis on those utilizing advanced manufacturing and diagnostic techniques to fabricate and interrogate complex reactive materials such as thermites (i.e. Al/CuO, Si/NaClO4) and intermetallics (i.e. Al/Ni or Ti/B). This field is constantly advancing, and this symposium will serve as a platform for the contributors to collectively consider upcoming challenges and research directions.
A tutorial complementing this session is tentatively planned.