Controlled Three-Dimensional Hierarchical Structuring by Memory-Based, Sequential Wrinkling

Won Kyu Lee, Clifford J. Engel, Mark D. Huntington, Jingtian Hu, Teri W Odom

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

This paper describes how a memory-based, sequential wrinkling process can transform flat polystyrene sheets into multiscale, three-dimensional hierarchical textures. Multiple cycles of plasma-mediated skin growth followed by directional strain relief of the substrate resulted in hierarchical architectures with characteristic generational (G) features. Independent control over wrinkle wavelength and wrinkle orientation for each G was achieved by tuning plasma treatment time and strain-relief direction for each cycle. Lotus-type superhydrophobicity was demonstrated on three-dimensional G1-G2-G3 hierarchical wrinkles as well as tunable superhydrophilicity on these same substrates after oxygen plasma. This materials system provides a general approach for nanomanufacturing based on bottom-up sequential wrinkling that will benefit a diverse range of applications and especially those that require large area (>cm2), multiscale, three-dimensional patterns.

Original languageEnglish
Pages (from-to)5624-5629
Number of pages6
JournalNano Letters
Volume15
Issue number8
DOIs
Publication statusPublished - Aug 12 2015

Fingerprint

wrinkling
Plasmas
Data storage equipment
cycles
oxygen plasma
polystyrene
textures
Polystyrenes
tuning
Substrates
Skin
Tuning
Textures
wavelengths
Oxygen
Wavelength

Keywords

  • hierarchical texturing
  • Nanowrinkles
  • polymers
  • polystyrene
  • superhydrophilicity
  • superhydrophobicity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Controlled Three-Dimensional Hierarchical Structuring by Memory-Based, Sequential Wrinkling. / Lee, Won Kyu; Engel, Clifford J.; Huntington, Mark D.; Hu, Jingtian; Odom, Teri W.

In: Nano Letters, Vol. 15, No. 8, 12.08.2015, p. 5624-5629.

Research output: Contribution to journalArticle

Lee, Won Kyu ; Engel, Clifford J. ; Huntington, Mark D. ; Hu, Jingtian ; Odom, Teri W. / Controlled Three-Dimensional Hierarchical Structuring by Memory-Based, Sequential Wrinkling. In: Nano Letters. 2015 ; Vol. 15, No. 8. pp. 5624-5629.
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