Data for "Spatially programmed alignment and actuation in printed liquid crystal elastomers"

Telles Arriaga, Rodrigo

doi:10.18126/xy1k-q029

Title: Data for "Spatially programmed alignment and actuation in printed liquid crystal elastomers"

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Authors:

Telles Arriaga, Rodrigo

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Publication Date:: Fri Jan 17 04:00:00 UTC 2025

Other Number(s):: LLNL-DATA-2008050
RR0064470

DOE Contract Number:: AC52-07NA27344

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

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 2997259

DOI:: https://doi.org/10.18126/xy1k-q029

Citation Formats


                    Telles Arriaga, Rodrigo. Data for "Spatially programmed alignment and actuation in printed liquid crystal elastomers".  United States: N. p., 2025. 
        Web.  doi:10.18126/xy1k-q029.

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                    Telles Arriaga, Rodrigo. Data for "Spatially programmed alignment and actuation in printed liquid crystal elastomers".  United States.  doi:https://doi.org/10.18126/xy1k-q029

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                    Telles Arriaga, Rodrigo. 2025.  
"Data for "Spatially programmed alignment and actuation in printed liquid crystal elastomers"".  United States.  doi:https://doi.org/10.18126/xy1k-q029.  https://www.osti.gov/servlets/purl/2997259. Pub date:Fri Jan 17 04:00:00 UTC 2025

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@article{osti_2997259,

  title        = {Data for "Spatially programmed alignment and actuation in printed liquid crystal elastomers"},

  author       = {Telles Arriaga, Rodrigo},

  abstractNote = {},

  doi          = {10.18126/xy1k-q029},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Fri Jan 17 04:00:00 UTC 2025},

  month        = {Fri Jan 17 04:00:00 UTC 2025}

}

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DOI: https://doi.org/10.18126/xy1k-q029

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Spatially programmed alignment and actuation in printed liquid crystal elastomers

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Liquid crystal elastomers (LCEs) exhibit reversible shape morphing behavior when cycled above their nematic-to-isotropic transition temperature. During extrusion-based 3D printing, LCE inks are subjected to coupled shear and extensional flows that can be harnessed to spatially control the alignment of their nematic director along prescribed print paths. Here, we combine experiment and modeling to elucidate the effects of ink composition, nozzle geometry, and printing parameters on director alignment. From rheological measurements, we quantify the dimensionless Weissenberg number (Wi) for the flow field each ink experiences as a function of printing conditions and demonstrate that Wi is a strong predictor of LCE alignment. We find that director alignment in LCE filaments printed through a tapered nozzle varies radially when Wi < 1, while it is uniform when Wimore »« less
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