Journal
ACS NANO
Volume 5, Issue 2, Pages 780-787Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn102900z
Keywords
nanotubes; adhesion; nanoscratch; bonding energy
Categories
Funding
- National Science Foundation [NSF CMMI-0900583, NSF-DMI-0547178]
- AFOSR [FA9550-09-1-0544]
- University Graduate School, Florida International University
- ONR-DURIP [N00014-06-0675]
- FIU University Graduate School
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0900583, 0856674] Funding Source: National Science Foundation
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A reliable quantification technique for interpreting nanomaterial-substrate bond strength is highly desired to predict efficient, long-term performance of nanomaterial-based devices. Adopting a novel nanoscratch-based technique, here we demonstrate quantification of carbon nanotube ((NT)-substrate adhesion strength for dense CNT structure and for patterned carbon nanocone (CNC) structures. Debonding energy for a single CNT is illustrated to range between 1 and 10 pJ, and the variation is strongly dependent on the nature of the Interface between CNTs, catalysts, and substrates. Our proposed technique could be adopted for characterization of bonding strength between a wide variety of nanotubes, nanowires, and other one-dimensional nanostructured materials and their underlying substrates.
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