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Gecko-Inspired Carbon Nanotube-Based Self-Cleaning Adhesives

Summary: Gecko-Inspired Carbon Nanotube-Based
Self-Cleaning Adhesives
Sunny Sethi, Liehui Ge, Lijie Ci, P. M. Ajayan, and Ali Dhinojwala*,
Department of Polymer Science, The UniVersity of Akron, Akron, Ohio 44325,
Department of Materials Science and Engineering, Rensselaer Polytechnic Institute,
Troy, New York 12180-3590
Received October 26, 2007
The design of reversible adhesives requires both stickiness and the ability to remain clean from dust and other contaminants. Inspired by
gecko feet, we demonstrate the self-cleaning ability of carbon nanotube-based flexible gecko tapes.
A gecko has the unique ability to reversibly stick and
unstick to a variety of smooth and rough surfaces. The
gecko's wall climbing ability, without the use of vis-
coelastic glue, has attracted significant attention.111
Although the gecko does not groom its feet, its stickiness
remains for months between molts.12
The gecko's dirty feet
can recover its ability to climb vertical walls only after a
few steps.12
Our daily experience with sticky tapes has been


Source: Ajayan, Pulickel M. - Department of Mechanical Engineering and Materials Science, Rice University


Collections: Materials Science