Preparation of asymmetric porous materials

DWPI Title: Asymmetric porous film structure for preparing porous materials, has non-stressed substrate and anisotropically stressed microporous film that is upon and in contact with substrate
Abstract: As asymmetric porous film structure formed by depositing a porous material film on a flexible substrate, and applying an anisotropic stress to the porous media on the flexible substrate, where the anisotropic stress results from a stress such as an applied mechanical force, a thermal gradient, and an applied voltage, to form an asymmetric porous material.
Use: Asymmetric porous film structure for preparing porous materials.
Advantage: The porous film is made from any material such that sufficient adhesion to the flexible substrate is maintained and stresses to the flexible substrate are propagated to the porous film. The nature and magnitude of anisotropic stress required to achieve a particular pore asymmetry depends on the intrinsic flexibility of molecular structures, film thickness, and interfacial bonding energy. The modeling the deformation of a flexible cast under applied force can be performed to allow prediction of the asymmetry of the resulting replica, thus enabling the fabrication of tailored chiral solids.
Novelty: The asymmetric porous film structure has a non-stressed substrate and an anisotropically stressed microporous film upon and in contact with the substrate. The anisotropically stressed microporous film comprises an asymmetric porous structure. The substrate comprises a piezoelectric material. The substrate comprises a material selected from the group consisting of a glass material, a silicon material, a metal, and a polymeric material.
Filed: 3/25/2015
Application Number: US14667749A
Tech ID: SD 11393.2
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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