The effect of contact length on adhesion between carbon nanotubes on silicon dioxide | Zendy

Kaylee McElroy | Zendy; Robert C. Davis | Zendy; Aaron R. Hawkins | Zendy

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The effect of contact length on adhesion between carbon nanotubes on silicon dioxide

Author(s) -

Kaylee McElroy,

Robert C. Davis,

Aaron R. Hawkins

Publication year - 2007

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2821228

Subject(s) - carbon nanotube , silicon , materials science , slip (aerodynamics) , nanotechnology , adhesion , nanoscopic scale , silicon dioxide , contact angle , composite material , mechanical properties of carbon nanotubes , contact area , surface tension , nanotube , optoelectronics , physics , quantum mechanics , thermodynamics

The force of adhesion was measured for single walled carbon nanotubes grown over lithographically defined silicon dioxide trenches. We varied contact lengths between the nanotubes and silicon dioxide from 230to850nm. Suspended nanotubes were pushed vertically into the trenches with an atomic force microscope tip, causing them to slip along the surface. Previous work done at shorter contact lengths found that tension was constant with contact length [J. D. Whittaker et al., Nano Lett. 6, 953 (2006)]. This study finds that when the nanotube contact length approaches 1μm, the tension at which nanotubes slip begins to increase with contact length. This indicates that contact length independent adhesion is a uniquely nanoscale behavior.

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