Bioinspired large-scale aligned porous materials assembled with dual temperature gradients.

ABSTRACT: Natural materials, such as bone, teeth, shells, and wood, exhibit outstanding properties despite being porous and made of weak constituents. Frequently, they represent a source of inspiration to design strong, tough, and lightweight materials. Although many techniques have been introduced to create such structures, a long-range order of the porosity as well as a precise control of the final architecture remain difficult to achieve. These limitations severely hinder the scale-up fabrication of layered structures aimed for larger applications. We report on a bidirectional freezing technique to successfully assemble ceramic particles into scaffolds with large-scale aligned, lamellar, porous, nacre-like structure and long-range order at the centimeter scale. This is achieved by modifying the c

SUBMITTER: Bai H 

PROVIDER: S-EPMC4730847 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature