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Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces
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Suspended Kirigami Surfaces for Multifoulant Adhesion Reduction.

Zahra Azimi Dijvejin1, Behrooz Khatir2, Kevin Golovin1,2

  • 1Okanagan Polymer Engineering Research & Applications Laboratory, School of Engineering, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada.

ACS Applied Materials & Interfaces
|January 21, 2022
PubMed
Summary

A new mechanical metamaterial approach, suspended kirigami inverted nil-adhesion surfaces (SKINS), significantly reduces adhesion for diverse foulants like ice and wax. This durable technology offers a tunable, multi-foulant anti-fouling solution applicable across industries.

Keywords:
anti-foulingdelaminationkirigamilow adhesion strengthmetamaterialswrinkling

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Experimental Multiscale Methodology for Predicting Material Fouling Resistance
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Area of Science:

  • Materials Science
  • Surface Science
  • Mechanical Engineering

Background:

  • High foulant adhesion is a persistent challenge across industries, impacting aircraft, ships, pipelines, and water remediation systems.
  • Existing anti-fouling surfaces are typically effective against only one type of foulant, lacking a universal solution.

Purpose of the Study:

  • To introduce a novel mechanical metamaterial-based approach for developing versatile anti-fouling surfaces.
  • To demonstrate the efficacy of suspended kirigami inverted nil-adhesion surfaces (SKINS) against a wide range of foulants.

Main Methods:

  • Fabrication of SKINS using kirigami principles, mimicking the wrinkling of hard films on soft substrates.
  • Mechanical characterization of foulant adhesion on SKINS, including ice, waxes, mud, adhesives, and marine foulants.
  • Evaluation of SKINS performance on curved surfaces and assessment of durability over multiple foulant deposition/removal cycles.

Main Results:

  • SKINS demonstrated significantly reduced adhesion for ice, waxes, dried mud, pressure-sensitive adhesive tape, and a marine hard foulant simulant.
  • Ice adhesion strength was reduced by over 250-fold compared to aluminum substrates (less than 5 kPa).
  • The anti-fouling properties were maintained on curved surfaces and persisted over 30 cycles of foulant deposition and removal.

Conclusions:

  • SKINS provide a mechanically-based, tunable anti-fouling solution independent of surface energy, applicable to diverse foulants.
  • This technology offers a promising route for developing durable, multi-foulant anti-fouling surfaces for various industrial applications.
  • The kirigami metamaterial approach presents a novel strategy for minimizing foulant adhesion on complex interfaces.