Material Design

The search for materials offering previously unavailable combinations of material properties is an ongoing pursuit. In the recent past, the concept of hybrid material systems has been successfully applied to create materials exhibiting novel property combinations thereby expanding the existing material property space. Hybrid materials are defined as materials that obtain their properties by the simultaneous use of at least two of the fundamental concepts of material design: i.e., composition, shape optimization, or segmentation.  In particular, we are interested in the development of meta-materials.  These materials obtain their properties not from composition but structure, and have the potential to possess properties not found in natural materials.

Mechanics of Topologically Interlocked Stereotomic Material Systems

In the development of mechanical meta-materials we explore the properties of materials assembled from a multitude of identical unit elements. We thereby explore concepts of topologically interlocking to enable load-carrying capabilities of the assemblies created from unit elements. These materials possess ideal damage tolerance, can be hybridized by changing both composition as well as introducing cellularity.

Current Funding: NSF #1662177

Architectured Materials for Multifunctional Energy Storage

We focus on architectured materials for energy storage systems as relevant for electric vehicles. Current battery systems in EVs are solely energy storage relevant but do not allow for a contribution to the mechanical response of the vehicle system. Our work contributes to establish a technology of impact and damage tolerant battery systems that can seamlessly be integrated into modern passenger cars without space and weight constraint. 

Collaborators: Wayne Chen (Purdue University)

Past Funding: arpa-e

Acoustical Meta-Materials

Our work is concerned with the design, the computational modeling, and the experimental characterization of acoustical meta-materials with exceptional sound transmission loss characteristics. We are investigating the acoustical properties of a class of planar meta-materials in which local resonances are related to plate-bending mechanics, and negative mass characteristics emerge from corresponding anti-resonance response.

Collaborators: S. Bolton, R. Cipra, School of Mechanical Engineering, Purdue University

Past Funding: AFOSR