三維金屬奈米粒子於電磁場中之電漿子現象
碩士 === 國立臺灣大學 === 應用力學研究所 === 92 === Abstract Surface plasmon resonances of silver nanoparticles under the transverse electromagnetic wave incident are investigated. By using Maxwell’s equation and multi-multipole method, a set of linear equations of expansion coefficients is first const...
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| Format: | Others |
| Language: | zh-TW |
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2004
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| Online Access: | http://ndltd.ncl.edu.tw/handle/35908417690383736406 |
| Summary: | 碩士 === 國立臺灣大學 === 應用力學研究所 === 92 === Abstract
Surface plasmon resonances of silver nanoparticles under the transverse electromagnetic wave incident are investigated. By using Maxwell’s equation and multi-multipole method, a set of linear equations of expansion coefficients is first constructed by satisfying boundary conditions pointwisely. Singular value decomposition is then used to solve the overdetermined linear equations. The field responses as well as the scattering cross section are calculated.
Numerical results of single, solid/core-shell (both spherical and spheroidal) and two solid spherical nanoparticles under incident resonance wave are presented. It is demonstrated from numerical results that for core-shell nanoparticles the resonances wavelength strongly depend on the thickness of the shell. It is also observed that for spheroidal nanoparticles with sharper shape, the field magnitudes can be extremely large, sometimes even up to hundred times to the magnitudes of the incident waves.
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