公开(公告)号：US20240068453A1

公开(公告)日：2024-02-29

申请号：US18238101

申请日：2023-08-25

Applicant: California Institute of Technology ,  The Government of the United States of America, as represented by the Secretary of the Navy

Inventor： Celia S. CHARI ,  Katherine T. FABER ,  Bryan W. McENERNEY ,  Richard R. HOFER ,  James A. WOLLMERSHAUSER ,  Edward P. GORZKOWSKI, III

IPC: F03H1/00 ,  C01B32/21

CPC classification number: F03H1/0006 ,  C01B32/21 ,  B64G1/413

Abstract: Aspects disclosed herein include graphite and hexagonal boron nitride bimaterials, methods of making these bimaterials, and electric propulsion devices or thrusters with these bimaterials. Aspects disclosed herein include electric propulsion devices comprising: at least one portion comprising or formed of a monolithic bimaterial; wherein the monolithic bimaterial comprises a graphite material and a hexagonal boron nitride material; and wherein the graphite material and hexagonal boron nitride material are monolithically integrated in the bimaterial.

公开(公告)号：US20240034688A1

公开(公告)日：2024-02-01

申请号：US18228369

申请日：2023-07-31

Applicant: California Institute of Technology

Inventor： Katherine T. FABER ,  Julia A. KORNFIELD ,  Noriaki ARAI ,  Orland BATEMAN ,  Rustem F. ISMAGILOV

IPC: C04B38/06 ,  B01D67/00 ,  B01D69/02 ,  B01D71/02 ,  B01J35/04 ,  B01J35/10 ,  C04B38/00 ,  H01B1/14 ,  H01B1/16

CPC classification number: C04B38/0605 ,  B01D67/0051 ,  B01D69/02 ,  B01D71/024 ,  B01J35/04 ,  B01J35/1071 ,  B01J35/1076 ,  C04B38/0038 ,  C04B38/0054 ,  C04B38/007 ,  C04B38/0093 ,  H01B1/14 ,  H01B1/16 ,  B01D2325/021 ,  B01D2325/26

Abstract: 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.

公开(公告)号：US20220234007A1

公开(公告)日：2022-07-28

申请号：US17558186

申请日：2021-12-21

Applicant: California Institute of Technology

Inventor： Julia A. KORNFIELD ,  Katherine T. FABER ,  Mamadou DIALLO ,  Orland BATEMAN ,  Noriaki ARAI

IPC: B01D69/12 ,  C08L27/16 ,  B01J31/16 ,  B01J31/06 ,  B01J37/00 ,  C07K1/22 ,  B01D71/34 ,  B01D71/60 ,  B01D15/36 ,  B01D15/38

Abstract: A composite, method of making the composite, and method of using the composite are disclosed. The composite comprises a macroporous scaffold comprising pores; and a polymer matrix positioned within the pores; wherein the polymer matrix comprises: a functional polymer particle; and a structural polymer. The method of using can comprise applications such as chromatography, catalysis, and sensing, among others.