Catalyst-free growth of amorphous silicon nanowires by laser ablation |
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Authors: | F Kokai S Inoue H Hidaka K Uchiyama Y Takahashi A Koshio |
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Institution: | 1. Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda-shi, 386-8567, Japan 2. Key Laboratory of Advanced Textile Materials and Manufacturing Technology Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, People’s Republic of China 3. Department of Ocean and Mechanical Engineering, Florida Atlantic University, Boca Raton, FL, 33431-0991, USA
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Abstract: | Carbon nanotubes (CNTs) appear to be ideal tip materials of atomic force microscopy (AFM) due to their small diameter and high stiffness. In this study, double-walled carbon nanotube (DWCNT) structures with different lengths of inner and outer layers are proposed as AFM tips. Both the vibration response and mode shapes of the tipped nanotubes under axial compression are studied by a theoretical nanobeam model. The results show that the natural frequencies of DWCNTs are significantly affected by the compressive loads and the length difference between the inner and outer nanotubes. The natural frequency associated with certain vibrational modes decreases with increasing compressive loads. This research may provide a useful reference for practical design for AFM tips with CNTs. |
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