Process-morphology scaling relations quantify self-organization in capillary densified nanofiber arrays
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Author(s)
Kaiser, Ashley L
Stein, Itai Y
Cui, Kehang
Wardle, Brian L
Date Issued
January 2018
Journal
Physical Chemistry Chemical Physics
Publisher
Royal Society of Chemistry (RSC)
Citation
Kaiser, Ashley L. et al. “Process-Morphology Scaling Relations Quantify Self-Organization in Capillary Densified Nanofiber Arrays.” Physical Chemistry Chemical Physics 20, 6 (2018): 3876–3881 © 2018 Owner Societies
Version
Final published version
Abstract
Capillary-mediated densification is an inexpensive and versatile approach to tune the application-specific properties and packing morphology of bulk nanofiber (NF) arrays, such as aligned carbon nanotubes. While NF length governs elasto-capillary self-assembly, the geometry of cellular patterns formed by capillary densified NFs cannot be precisely predicted by existing theories. This originates from the recently quantified orders of magnitude lower than expected NF array effective axial elastic modulus (E), and here we show via parametric experimentation and modeling that E determines the width, area, and wall thickness of the resulting cellular pattern. Both experiments and models show that further tuning of the cellular pattern is possible by altering the NF-substrate adhesion strength, which could enable the broad use of this facile approach to predictably pattern NF arrays for high value applications.
MIT Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Creative Commons Attribution 3.0 Unported license
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DOI of Published Version
https://doi.org/10.1039/C7CP06869G
