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Direct tensile tests of double walled carbon nanotube (DWCNT) membranes with thickness of 40–80nm were performed using a micro-stress-strain puller. The tensile strength and Young’s modulus are 4.8E2–8.4E2MPa and 4.4–8.8GPa, respectively. The deformation and fracture processes were analyzed using the stress vs. strain curves, and SEM observations of the fracture surface of a membrane. The membrane...
The mechanical properties of well-aligned double-walled carbon nanotube (DWNT) strands with diameters of 3–20μm and lengths of ∼10mm were measured using a stress–strain puller. The average tensile strength and Young’s modulus of the tested strands are 1.2GPa and 16GPa, respectively. Deformation and fracture processes of these samples are discussed. The tensile strength and Young’s modulus of an individual...
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