Empirical Correlation of the Morphology of Coiled Carbon Nanotubes with Their Response to Axial Compression
Figure 5
Thermal resonance frequency response (a), force distance (b), and oscillation amplitude (c) responses of the cantilever-CCNT system under 875 nm compression with an approach angle of 7°. The displayed frequency data is from the second vibration mode, due to increased S/N response. In the plots we observe several phenomena occurring during the scanner extension: the initial contact with the substrate (1), buckling response of the nanocoil (2), and slip-stick motion (3, 4). During scanner retract motion we observe several ringing events in the oscillation amplitude that correlate to the return to the buckling geometry of the coil (5) and release from the surface (6).
