High strength metallic wood from nanostructured nickel inverse opal materials.

ABSTRACT: This paper describes a nickel-based cellular material, which has the strength of titanium and the density of water. The material's strength arises from size-dependent strengthening of load-bearing nickel struts whose diameter is as small as 17?nm and whose 8?GPa yield strength exceeds that of bulk nickel by up to 4X. The mechanical properties of this material can be controlled by varying the nanometer-scale geometry, with strength varying over the range 90-880?MPa, modulus varying over the range 14-116?GPa, and density varying over the range 880-14500?kg/m3. We refer to this material as a "metallic wood," because it has the high mechanical strength and chemical stability of metal, as well as a density close to that of natural materials such as wood.

SUBMITTER: Pikul JH 

PROVIDER: S-EPMC6345818 | biostudies-other | 2019 Jan

REPOSITORIES: biostudies-other