Process, Design and Materials for Unidirectionally Tilted Polymeric Micro/Nanohairs and Their Adhesion Characteristics
1
Center for Neuroscience Imaging Research (CNIR), Institute of Basic Science, Suwon 440-746, Korea
2
School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 440-746, Korea
3
Department of Chemistry, Sungkyunkwan University (SKKU), Suwon 440-746, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Antonio Pizzi
Polymers 2016, 8(9), 326; https://doi.org/10.3390/polym8090326
Received: 29 June 2016 / Revised: 18 August 2016 / Accepted: 29 August 2016 / Published: 2 September 2016
(This article belongs to the Special Issue Renewable Polymeric Adhesives)
Recent research in the field of gecko-inspired dry adhesive has focused on modifying the material and structural properties of polymer-based nanohairs. Polymers such as polystyrene (PS), high-density polyethylene (HDPE), ultraviolet curable epoxy (SU-8), polyurethane acrylate (PUA), polycarbonate (PC), and polydimethyl siloxane (PDMS) can fulfill many mechanical property requirements, are easily tunable, and can be produced via large-scale fabrication. However, the fabrication process for tilted structure remains challenging. The tilted structure is a crucial factor in high-degree conformal contact, which facilitates high adhesion, low effective modulus, and directional adhesion properties. Recent studies have attempted to create a tilted structure by applying beam irradiation, mechanical and thermal stress, and magnetic fields. This review provides a comprehensive investigation into advanced strategies for producing tilted polymeric nanostructures and their potential applications in the near future.
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Keywords:
gecko-like dry adhesive; high aspect ratio polymeric nanostructure; unidirectionally tilted structures; adhesiveless transfer printing; climbing robotics
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
MDPI and ACS Style
Im, H.S.; Kim, J.U.; Han, S.; Kim, T.-I. Process, Design and Materials for Unidirectionally Tilted Polymeric Micro/Nanohairs and Their Adhesion Characteristics. Polymers 2016, 8, 326.
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