| 静电场中无限长均匀双层圆柱体的拉普拉斯方程解及其在纳米光学中的应用 |
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| 引用本文： | 吴大建,洪云,刘晓峻.静电场中无限长均匀双层圆柱体的拉普拉斯方程解及其在纳米光学中的应用[J].大学物理,2011,30(5):11-13. |
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| 作者姓名： | 吴大建 洪云 刘晓峻 |
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| 作者单位： | 1. 江苏大学,物理系,江苏,镇江,212013
2. 南京大学,物理学院,江苏,南京,210093 |
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| 摘 要： | 应用拉普拉斯方程求解静电场中无限长均匀双层圆柱体的电势及电场,并基于散射理论获得该结构颗粒的光学散射、吸收及消光系数.进一步计算了金纳米管的远场光谱和近场分布,其结果与经典的Mie散射理论计算结果完全一致.因此,该理论结果可以很好的被应用于纳米光学研究.
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| 关 键 词： | 静电场 拉普拉斯方程 光散射 金纳米管 |
Solutions of Laplace equation for infinite length two-layered cylinder and applications in nano-optics |
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| WU Da-jian,HONG Yun,LIU Xiao-jun.Solutions of Laplace equation for infinite length two-layered cylinder and applications in nano-optics[J].College Physics,2011,30(5):11-13. |
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| Authors: | WU Da-jian HONG Yun LIU Xiao-jun |
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| Institution: | WU Da-jian,HONG Yun,LIU Xiao-jun(1.Department of Physics,Jiangsu University,Zhenjiang,Jiangsu 212013,China,2.School of Physics,Nanjing University,Nanjing,Jiangsu 210093,China) |
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| Abstract: | The expressions for the electric potential and electric field of infinite length two-layered cylinder are obtained by solving Laplace equation.Based on the scattering theory,we deduce the optical scattering,absorption and extinction efficiencies for two-layered cylinder,and calculate the far-field spectra and near-field distributions of Au nanotube.It is found that the calculated results are same as that obtained by Mie scattering theory.Thus,our theoretical results can be well used in the studies of nano-o... |
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| Keywords: | static electric field Laplace equation scattering Au nanotube |
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