Adhesive Properties of Gecko-Inspired Mimetic via Micropatterned Carbon Nanotube Forests

The adhesive properties of the gecko foot have inspired designs of advanced micropatterned surfaces with increased contact areas. We have fabricated micropatterned pillars of vertically aligned carbon nanotube forests with a range of pillar diameters, heights, and spacings (or pitch). We used nanoin...

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Bibliographic Details
Published inJournal of physical chemistry. C Vol. 116; no. 37; pp. 20047 - 20053
Main Authors Chen, Bingan, Goldberg Oppenheimer, Pola, Shean, Tamaryn A.V, Wirth, C. Tobias, Hofmann, Stephan, Robertson, John
Format Journal Article
LanguageEnglish
Published Columbus, OH American Chemical Society 20.09.2012
Subjects
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Mechanical and acoustical properties of condensed matter
Mechanical properties of nanoscale materials
Physics
Patterning
Nanoindentation
Carbon nanotubes
Adhesion
Contact surface
Young modulus
Pull out test
Nanotube bundle
Biomimetic compound
Sapphire
Scaling laws
Vertical alignment
Arrays
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Summary:The adhesive properties of the gecko foot have inspired designs of advanced micropatterned surfaces with increased contact areas. We have fabricated micropatterned pillars of vertically aligned carbon nanotube forests with a range of pillar diameters, heights, and spacings (or pitch). We used nanoindentation to measure their elastic and orthogonal adhesion properties and derive their scaling behavior. The patterning of nanotube forests into pillar arrays allows a reduction of the effective modulus from 10 to 15 MPa to 0.1–1 MPa which is useful for developing maximum conformal adhesion.
ISSN:1932-7447
1932-7455
DOI:10.1021/jp304650s