Carbon Nanotube Arrays with Strong Shear Binding-On and Easy Normal Lifting-Off
University of Akron · University of Dayton · +3 more institutions
Abstract
The ability of gecko lizards to adhere to a vertical solid surface comes from their remarkable feet with aligned microscopic elastic hairs. By using carbon nanotube arrays that are dominated by a straight body segment but with curly entangled top, we have created gecko-foot-mimetic dry adhesives that show macroscopic adhesive forces of approximately 100 newtons per square centimeter, almost 10 times that of a gecko foot, and a much stronger shear adhesion force than the normal adhesion force, to ensure strong binding along the shear direction and easy lifting in the normal direction. This anisotropic force distribution is due to the shear-induced alignments of the curly segments of the nanotubes. The mimetic…
Citation impact
- FWCI
- 114.42
- Percentile
- 100%
- References
- 27
Authors
5- LQLiangti Qu
University of Akron, University of Dayton, United States Air Force Research Laboratory, Georgia Institute of Technology, Wright-Patterson Air Force Base
- LDLiming DaiCorresponding
University of Akron, University of Dayton, United States Air Force Research Laboratory, Georgia Institute of Technology, Wright-Patterson Air Force Base
- MOMorley O. Stone
University of Akron, University of Dayton, United States Air Force Research Laboratory, Georgia Institute of Technology, Wright-Patterson Air Force Base
- ZXZhenhai Xia
University of Akron, University of Dayton, United States Air Force Research Laboratory, Georgia Institute of Technology, Wright-Patterson Air Force Base
- ZLZhong Lin WangCorresponding
University of Akron, University of Dayton, United States Air Force Research Laboratory, Georgia Institute of Technology, Wright-Patterson Air Force Base
Topics & keywords
- Gecko
- Adhesive
- Carbon nanotube
- Shear (geology)
- Shear force
- Adhesion
- Materials science
- Anisotropy