Title:
VOXELATED MOLECULAR PATTERNING IN 3-DIMENSIONAL FREEFORMS
Document Type and Number:
WIPO Patent Application WO/2021/055063
Kind Code:
A3
Abstract:
A four-dimensional ("4D")-printing or 4D-additive manufacturing method for producing anisotropic macroscopic structures and/or anisotropic materials having a plurality of voxels, comprising: providing or forming a first layer of a photocurable first liquid crystalline (LC) monomer; wherein the first layer of the first LC monomer has been provided or formed at a temperature falling within a nematic phase range of the first LC monomer; applying a magnetic field, having a first three-dimensional ("3D") magnetic field vector with respect to an origin point of a 3D coordinate system, to the first layer of first LC monomer or one or more of the plurality of voxels within the first layer of first LC monomer for a first dwell time, to produce in alignment with the first 3D magnetic field vector a first molecular director and/or first nematic alignment vector within the first layer of first LC monomer or within each of the one or more of the plurality of voxels within the first layer of first LC monomer; exposing the first layer of first LC monomer or the one or more of the plurality of voxels within the first layer of first LC monomer to a first dose of light radiation.
Inventors:
MEENAKSHISUNDARAM RAVI SHANKAR (US)
TABRIZI MOHSEN (US)
WARE TAYLOR H (US)
TABRIZI MOHSEN (US)
WARE TAYLOR H (US)
Application Number:
PCT/US2020/039030
Publication Date:
June 24, 2021
Filing Date:
June 22, 2020
Export Citation:
Assignee:
UNIV PITTSBURGH COMMONWEALTH SYS HIGHER EDUCATION (US)
International Classes:
G02F1/13; B29C64/10; B29C64/106; C09K19/00; C09K19/02; C09K19/04; C09K19/38; G02F1/00
Domestic Patent References:
| WO2019050922A1 | 2019-03-14 |
Foreign References:
| US20180119014A1 | 2018-05-03 | |||
| US20170210077A1 | 2017-07-27 | |||
| KR20070110173A | 2007-11-16 | |||
| US20160313607A1 | 2016-10-27 |
Other References:
LOPEZ-VALDEOLIVAS, M ET AL.: "4D Printed Actuators with Soft-Robotic Functions", MACROMOLECULAR RAPID COMMUNICATIONS, March 2018 (2018-03-01), XP055837496, DOI: 10.1002/marc.201700710
AMBULO, CP ET AL.: "Four-dimensional Printing of Liquid Crystal Elastomers", ACS APPLIED MATERIALS & INTERFACES, 2 October 2017 (2017-10-02), XP055837499, DOI: 10.1021/acsami.7b111851
YAO, Y ET AL.: "Multiresponsive polymeric microstructures with encoded predetermined and self-regulated deformability", PNAS, 4 December 2018 (2018-12-04), XP055837500, DOI: 10.1073/pnas.1811823115
KOTLKLAN, A ET AL.: "3D Printing of Liquid Crystal Elastomeric Actuators with Spatially Programed Nematic Order", ADVANCED MATERIALS, 15 January 2018 (2018-01-15), XP055837504, DOI: 10.1002/adma.20170616 4
AMBULO, CP ET AL.: "Four-dimensional Printing of Liquid Crystal Elastomers", ACS APPLIED MATERIALS & INTERFACES, 2 October 2017 (2017-10-02), XP055837499, DOI: 10.1021/acsami.7b111851
YAO, Y ET AL.: "Multiresponsive polymeric microstructures with encoded predetermined and self-regulated deformability", PNAS, 4 December 2018 (2018-12-04), XP055837500, DOI: 10.1073/pnas.1811823115
KOTLKLAN, A ET AL.: "3D Printing of Liquid Crystal Elastomeric Actuators with Spatially Programed Nematic Order", ADVANCED MATERIALS, 15 January 2018 (2018-01-15), XP055837504, DOI: 10.1002/adma.20170616 4
Attorney, Agent or Firm:
BANGOR, Paul D., Jr. (US)
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