An overview of the recent progress in the development of gecko-inspired synthetic dry adhesives is presented, with particular emphasis on two major structural elements of nanohairs and nanotubes. With the advance of nanofabrication techniques, recently developed dry adhesives made of nanohairs and nanotubes show excellent adhesion strength, smart directional adhesion as well as rough surface adaptability by better mimicking gecko foot hairs. After a brief description of the requirements for high-performance artificial dry adhesives, a variety of synthetic adhesives are described based on materials and structural features of the gecko-inspired nanostructures. In addition, current challenges and future directions towards an optimized synthetic dry adhesive are presented. © 2009 Elsevier Ltd. All rights reserved.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUK-F1-03702
Acknowledgements: This work was supported by the Korea Science Et Engineering Foundation through the Nano R&D Program (Grant 200702605 and 0428-2008-018), the King Abdutlah University of Science and Technology (KAUST) program (No. KUK-F1-03702), the Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (Grant KRF-J03003), and the Micro Thermal System Research Center at Seoul National University.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.