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  • 學位論文

奈米銀之表面電漿效應探討

Investigation of nano silver on surface plasmon on resonance effects

指導教授 : 周趙遠鳳
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摘要


我們研究奈米尺度下實心銀柱與空心銀殼柱間的侷域表面電漿共振效應(LSPR)與奈米銀棒並填入不同的介電常數於銀殼柱內進行模擬分析,以有限元素法(Finite-element method)進行模擬分析,結果顯示這奈米銀殼柱中填入不同介質時,當介質越大時擁有一個獨特的藍移現象產生我們可以經由調變奈米銀殼柱的殼厚、銀棒的高度、銀殼柱的數量來提升近場強度並可將波長移置可見光與近紅外光的範圍,銀殼厚度會影響結構之峰值波長,此外我們也有研究一根、或多根銀殼柱陣列之表面電漿效應模擬分析。

並列摘要


We investigate the localized surface plasmon resonances (LSPR) of a pair of dielectric-core/silver-shell nanospheres, with and without a silver nanobar connecting them, for different values of the permittivity of the dielectric core, using the finite element method.Results show that the structure of a pair of core shells with a nanobar possesses a distinct blue-shifted behavior that can be manipulated from near infrared to visible light. The near field intensity can be enhanced by several orders of magnitude, and the working wavelengths depend on the shell thickness, dielectric medium in hollow metallic shell and the diameter of the nanobar. In addition, three or more pairs of nanospherical chain waveguides have also been investigated in our simulations.

參考文獻


參考文獻
[1] 周趙遠鳳,“光學”,儒林圖書出版,台灣(2009)
[2] 郭清癸,黃俊傑,牟中原,“金屬奈米粒子的製造”,物理雙月刊(2001)
[3] 張志涵,陳守義,林瑞模,“有限元素法於生物力學應用的概說”
[4] 張勝雄,戴朝義,“奈米電漿子波導元件於積體光學之應用”,物理雙月刊卅卷六期,(2008)

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