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Challenges and limits of mechanical stability in 3D direct laser writing

Author

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  • Elaheh Sedghamiz

    (Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT))

  • Modan Liu

    (Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT))

  • Wolfgang Wenzel

    (Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT))

Abstract

Direct laser writing is an effective technique for fabrication of complex 3D polymer networks using ultrashort laser pulses. Practically, it remains a challenge to design and fabricate high performance materials with different functions that possess a combination of high strength, substantial ductility, and tailored functionality, in particular for small feature sizes. To date, it is difficult to obtain a time-resolved microscopic picture of the printing process in operando. To close this gap, we herewith present a molecular dynamics simulation approach to model direct laser writing and investigate the effect of writing condition and aspect ratio on the mechanical properties of the printed polymer network. We show that writing conditions provide a possibility to tune the mechanical properties and an optimum writing condition can be applied to fabricate structures with improved mechanical properties. We reveal that beyond the writing parameters, aspect ratio plays an important role to tune the stiffness of the printed structures.

Suggested Citation

  • Elaheh Sedghamiz & Modan Liu & Wolfgang Wenzel, 2022. "Challenges and limits of mechanical stability in 3D direct laser writing," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29749-9
    DOI: 10.1038/s41467-022-29749-9
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    References listed on IDEAS

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    1. Brian H. Cumpston & Sundaravel P. Ananthavel & Stephen Barlow & Daniel L. Dyer & Jeffrey E. Ehrlich & Lael L. Erskine & Ahmed A. Heikal & Stephen M. Kuebler & I.-Y. Sandy Lee & Dianne McCord-Maughon &, 1999. "Two-photon polymerization initiators for three-dimensional optical data storage and microfabrication," Nature, Nature, vol. 398(6722), pages 51-54, March.
    2. Hyunwoo Yuk & Baoyang Lu & Shen Lin & Kai Qu & Jingkun Xu & Jianhong Luo & Xuanhe Zhao, 2020. "3D printing of conducting polymers," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
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