| 电极距离对脱氧核苷酸横向电信号的影响 |
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| 引用本文： | 苏伟,董瑞新,刘昊,王文红.电极距离对脱氧核苷酸横向电信号的影响[J].聊城师院学报,2009(4):25-28. |
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| 作者姓名： | 苏伟 董瑞新 刘昊 王文红 |
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| 作者单位： | 聊城大学物理科学与信息工程学院,山东聊城252059 |
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| 基金项目： | 国家自然科学基金（60571062）资助课题 |
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| 摘 要： | 以脱氧核苷酸为研究对象，利用密度泛函的非平衡态格林函数方法，计算了电极距离对四种核苷酸分子电流的影响．计算结果表明：当用胞嘧啶通过硫原子修饰左侧电极时，分子电流的衰减曲线与实验结果在形状上保持一致．当电极距离增加到一定程度时，电流随电极距离的变化均可以通过相同的指数函数来表示．
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| 关 键 词： | 脱氧核苷酸 电极距离 非平衡格林函数 密度泛函 |
The Effects of the Distance between Electrodes on the Transverse Transport Properties of Nucleotides |
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| SU Wei,DONG Rui-xin,LIU Hao,WANG Wen-hong.The Effects of the Distance between Electrodes on the Transverse Transport Properties of Nucleotides[J].Journal of Liaocheng Teachers University(Natural Science Edition),2009(4):25-28. |
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| Authors: | SU Wei DONG Rui-xin LIU Hao WANG Wen-hong |
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| Institution: | (School of Physics Science and Information Engineering, Liaocheng University, Liaocheng, 252059,China) |
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| Abstract: | Based on the density functional theory and the non-equilibrium Green function method, we calculated the effects of the distance between electrodes on the transverse transport properties of nucleotides. When the cytosine coupled to left electrode through thiol group, the numerical calculation result is well coincide with the experimental observations in shape. When the distance between electrodes increased to a certain extent, the decay of tunnel current with distance present a similar trend. |
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| Keywords: | non-equilibrium Green function DFT deoxyribonucleotide the distance between electrodes |
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