Dynamics of fullerene coalescence |
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Authors: | Kim Yong-Hyun Lee In-Ho Chang K J Lee Sangsan |
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Affiliation: | Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea. yonghyun@mail.kaist.ac.kr |
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Abstract: | Fullerene coalescence experimentally found in fullerene-embedded single-wall nanotubes under electron-beam irradiation or heat treatment is simulated by minimizing the classical action for many atom systems. The dynamical trajectory for forming a (5,5) C120 nanocapsule from two C60 fullerene molecules consists of thermal motions around potential basins and ten successive Stone-Wales-type bond rotations after the initial cage-opening process for which energy cost is about 8 eV. Dynamical paths for forming large-diameter nanocapsules with (10,0), (6,6), and (12,0) chiral indexes have more bond rotations than 25 with the transition barriers in a range of 10-12 eV. |
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