Papers by Author: Yan Qiong Fei

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Authors: Jian Feng Wan, Yan Qiong Fei, Jian Nong Wang
Abstract: ab-initio calculations on the interaction between the single-walled carbon nanotube (SWCN) and the Mg (0001) surface have been reported. It was found that the charge transfer from metal surfaces to the nanotubes takes place depending on both the electronic structures of the nanotubes and the work functions of the metal surfaces. The stable geometries for the nanotube between two consecutive objectives with C-Mg chemical bonds formed. The interaction energy in the most stable geometry is found to be CNT’s structural dependence. Concerning the electronic properties, the most stable structure showed a decrease in the density of states near the Fermi level due to the formation of C-Mg bonds enhancing the metallic character of the nanotube by the contact with the surface. The nature of the nanotube-interface interaction for nanotubes of larger diameters has been also discussed based on the calculated bond order.
Authors: Yan Qiong Fei, Wei Yang, Jiang Yu
Abstract: Self-reconfigurable modular robots consist of many identical modules. By changing the connections among modules, the whole configuration of the robot can transform into arbitrary other configurations. In this paper, a hybrid self-reconfigurable modular robot is designed, which is composed of a master module and a slave module. Then, the docking process is analyzed with the geometric method. The docking states between two modules are presented. It is a complicated multi-peg-in-hole process.
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