Wave Propagation and Information Transport in Heterogeneous Media
Abstract
In recent years, the mechanics and materials research communities have devoted considerable efforts towards the pursuit of novel, unusual and superior mechanical properties through engineered assembly of constituents. These assemblies, generally denoted as ÔmetamaterialsÕ, exploit both geometry and material arrangements to attain tailored anisotropy, resonant properties, intentional nonlinearities, as well as topologically protected edge states that are associated with localized, interface, and non-reciprocal wave modes. Most metamaterials consist of ordered, often periodic assemblies, and their implementation greatly benefits from ongoing developments in terms of advanced manufacturing and fabrication techniques. Parallel advancements in manufacturing and metamaterial design methodologies have led to renewed interest in the general topic of wave propagation in heterogeneous media, on ensuing complex phenomena, and on leveraging them for new or improved technologies and applications. Within this context, numerous open questions exist when looking beyond conventional ordered topologies, and when explorations extend to disordered, quasiperiodic, or randomly heterogeneous structures that initiate various unconventional wave behaviors. Phenomena like localization and its landscape, sub-diffusion, normal diffusion, super-diffusion, dissipation, reduced energy transport. phase transitions, and non-reciprocity can be investigated, and possibly controlled in the context of heterogeneous materials. These are material assemblies whose microstructure is intentionally designed, tuned or controlled to induce wave behaviors and phenomena that rely on deterministic and non-deterministic heterogeneities in space and/or time. Exploration of these phenomena and the potential for their control is an open, exciting area of research, rich in open questions and in application opportunities. The proposed workshop provides a forum for researchers and engineers to discuss objectives, tools, fundamental questions and potential application areas for heterogeneous structures and related wave phenomena. This 3-day, single session, interactive workshop will bring together experts from academia, industry and government labs with the goal of identifying key research questions to highlight new areas of investigation based on the opportunities afforded by structural heterogeneities.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 19, 2019
- Source ID
- W911NF1910417
Entities
People
- Massimo Ruzzene
Organizations
- Army Contracting Command
- United States Army
- University of Colorado Boulder