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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/78773

    Title: Interfacial interaction of gas molecules and single-walled carbon nanotubes
    Authors: Zhou, Jun;Gu, Yudong;Hu, Youfan;Mai,Wenjie;Yeh,Ping-Hung;Bao, Gang;Sood, Ashok K.;Polla,Dennis L.;Wang, Zhong Lin
    Contributors: 淡江大學物理學系
    Keywords: carbon nanotubes;deformation;gases;XANES
    Date: 2012
    Issue Date: 2012-10-22 10:31:45 (UTC+8)
    Publisher: College Park: American Institute of Physics
    Abstract: The interfacial interaction between single-walled carbon nanotubes (SWNTs) and various gas molecules (H2, He, and N2) at different pressures has been probed by in situ x-ray absorption near-edge structure (XANES) spectroscopy. Experimental results reveal the different strength of interfacial interaction (involving external and internal collisions) between SWNTs and various gas molecules under different pressures. At gas pressures higher than 5 Torr, the unoccupied states of SWNTs show some features corresponding to the structure deformation with a reversible behavior when cycling under vacuum and gas conditions. The XANES study for different gases (H2, He, and N2) shows a strong dependence of gas molecular weight, which provides experimental evidence to the gas scattering mechanism.
    Relation: Applied Physics Letters 100(20), 201605(4pages)
    DOI: 10.1063/1.4718421
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

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