TEMPERATURE INFLUENCE ON CARBON NANOTUBES AS A TIP OF ATOMIC FORCE MICROSCOPY PROBES

摘要

In this paper, the geometrical and structural behaviors of single-walled carbon nanotube, which is designed as the tip of the Atomic Force Microscopy probe, are examined by molecular dynamics simulation. Armchair and Zig-Zag type of nanotubes were simulated in the various temperature (300K, 500K, 700K, and 900K) conditions. The systems were studied using a molecular dynamics model with the software, Hyperchem, employing an empirical MM+ force field. In our results, both types of CNTs experienced twisting and bending behaviors during simulations and the degree of both situations altered with increasing temperature. Also, it is found that armchair CNT is more susceptible to bending while zigzag type is in twisting at high temperature condition. However, the results obtained from Hyperchem only provide a general idea of what may happen instead of a promise in the simulations as similar behaviors are observed under different loading conditions with higher temperature in numerous studies.