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Identifying origins of the mechanical properties of nanoporous metals

Antonia Antoniou (Georgia Institute of Technolog)

Mechanics of Thin Films and Multilayered Structures

Tue 2:40 - 4:00

Salomon 203

Nanoporous (NP) metal foams are a unique class of materials that are characterized by extremely high surface-to-volume ratios and possess such desirable properties of metals as high electrical conductivity, catalytic activity, and strength. This unusual combination of properties is highly attractive in many applications including electrodes in batteries and supercapacitors as well as catalysts, sensors and filters. Despite significant progress, fundamental understanding of their mechanical properties is still lacking. We present an overview of our experimental and numerical work on understanding modulus and strength of these materials. In particular, we present results from in-situ mechanical tests that shed light on the origins of ultra-high strength observed in NP Pt and NP Cu.