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Freeze-cast ceramic membrane for size based filtration

Faber, Katherine T. and Kornfield, Julia A. and Arai, Noriaki and Bateman, Orland and Ismagilov, Rustem F. (2020) Freeze-cast ceramic membrane for size based filtration. Patent number: US20200115291A1.

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Provided herein are methods for making a freeze-cast material having a internal structure, the methods comprising steps of: determining the internal structure of the material, the internal structure having a plurality of pores, wherein: each of the plurality of pores has directionality; and the step of determining comprises: selecting a temperature gradient and a freezing front velocity to obtain the determined internal structure based on the selected temperature gradient and the selected freezing front velocity; directionally freezing a liquid formulation to form a frozen solid, the step of directionally freezing comprising: controlling the temperature gradient and the freezing front velocity to match the selected temperature gradient and the selected freezing front velocity during directionally freezing; wherein the liquid formulation comprises at least one solvent and at least one dispersed species; and subliming the at least one solvent out of the frozen solid to form the material.

Item Type:Patent
Related Patents:WO2020041759A1
Patent Classification:Current U.S. Class: 1/1.
Patent Assignee:California Institute of Technology, National Science Foundation
Related URLs:
URLURL TypeDescription Patents site
Faber, Katherine T.0000-0001-6585-2536
Kornfield, Julia A.0000-0001-6746-8634
Arai, Noriaki0000-0002-3040-2997
Ismagilov, Rustem F.0000-0002-3680-4399
Additional Information:2018-08-24: Priority to US201862722689P. 2019-08-23: Application filed by California Institute of Technology. 2020-04-16: Publication of US20200115291A1
Record Number:CaltechAUTHORS:20210201-150525983
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107842
Deposited By: Katherine Johnson
Deposited On:01 Feb 2021 23:28
Last Modified:01 Feb 2021 23:34

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