Stereolithography additive manufacturing of photoaligned liquid crystal elastomers

Moran, Bryan D.; Lee, Elaine; Krikorian, Caitlyn Christian; Bekker, Logan

Stereolithography additive manufacturing of photoaligned liquid crystal elastomers

Patent · Tue Oct 24 04:00:00 EDT 2023

OSTI ID:2293779

Moran, Bryan D.; Lee, Elaine; Krikorian, Caitlyn Christian; Bekker, Logan

A method of forming a three-dimensional structure of liquid crystal (LC) elastomers includes contacting a resin layer of LC oligomers with a layer of photoalignment material, and exposing a portion of photoalignment material to light for aligning the portion of photoalignment material in a first orientation. The LC oligomers adjacent the illuminated portion of photoalignment material align to the first orientation of the illuminated portion. The portion of aligned LC oligomers of the resin layer are cured. Operations for forming additional layers include creating a relative movement of the resin layer away from the photoalignment material, contacting another resin layer with the photoalignment material, and exposing another portion of photoalignment material to light for aligning the photoalignment material in a different orientation. The LC oligomers adjacent the illuminated portion of photoalignment material align to the different orientation, and the portion of aligned LC oligomers of the resin layer are cured.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC52-07NA27344

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Number(s):: 11,794,406

Application Number:: 17/848,309

OSTI ID:: 2293779

Country of Publication:: United States

Language:: English

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