臺灣博碩士論文加值系統

本文研究有限高度奈米銀柱、奈米金棒間的表面電漿共振效應與奈米銀柱角度變化，分別填入不同介電常數、介電材料在奈米銀殼柱與奈米金棒中進行結構模擬分析，奈米銀柱、奈米銀殼柱和奈米金棒經由電磁波TM偏振入射光，會在銀柱、金棒間產生很強的表面電漿共振與電場增強效應，振盪強度會隨著波長、填入的介電常數、材料與結構的寬度、高度的變化而有所不同。也應用有限元素法進行模擬分析結果，在將這些表面電漿與近場效應的模擬結果，再將結構原本的參數做一些改變，可以調整近場強度與波長最高值。光子晶體平板負折射現象的研究方面。我們呈現出可藉由改變週期性二維光子晶體平板入射光角度，產生正負折射現象。此外，對於特定厚度的二維光子晶體平板，可以更進一步的藉由改變光源入射角度，成功設計出不同角度的光子晶體光束分離器。相較於先前研究者所提出的二維光子晶體平板結構。

This thesis studies the surface plasma resonance effect and the variantangle of nano-silver rod between finite height nano-silver rod and nano-gold bar. It individually filled different dielectric constant anddielectric material in nano-silver shell rod and nano-gold bar for furthersimulated structure analysis. Through vibrated entry light from TM electro-magnetic wave, nano-silver rod, nano-silver shell rod and nano-gold bar produce strong surface plasma resonance and strengthen the effect of electric field. The strength of vibration varies as per wavelength, fill-in dielectric constant, material and different structure in width & height. It also adopts finite element law to simulate the analytic result. With simulated result of surface plasma and approach effect, it can adjust approach strength and highest value of wave length by altering the original parameter in structure.Regarding the study of the negative refractive index phenomena of photonic slab, we can produce positive & negative reflective index phenomena by altering the entry light angle of two-dimensional photonic crystal slab.Besides, in view of specific thickness of two-dimensional photonic crystal slab, compared with the structure of two–dimensional photonic crystal slab tendered by previous researcher, we can further design photonic crystal beam separator with different angles by altering the source of light of entry light angle.

中文摘要............................................i
英文摘要............................................ii
誌謝................................................iv
目錄................................................v
圖目錄..............................................vii
第一章 簡介.........................................1
1.1 前言............................................1
1.2 表面電漿子簡介..................................1
1.3 光子晶體簡介....................................3
1.4 光子晶體缺陷與應用..............................5
1.5 研究動機........................................7
1.6 論文章節說明....................................7
第二章 數值模擬方法與基礎理論.......................9
2.1 前言............................................9
2.2 有限元素法......................................9
2.3 有限元素法之光子晶體計算.......................11
2.4 表面電漿的基礎理論.............................15
2.5 光子晶體的基礎理論.............................15
2.6 負折射起源與原理...............................18
第三章 奈米銀殼圓柱角度改變與單根奈米金棒之表面電漿共振研究.......................................................21
3.1 前言...........................................21
3.2 數值模擬結果與討論(奈米銀殼圓柱角度改變).......21
3.3 數值模擬結果與討論(單根奈米金棒)...............26
3.4 小結...........................................35
第四章 光子晶體負折射現象模擬結果與分析............36
4.1 前言...........................................36
4.2 6倍數光子晶體平板厚度模擬結果與分析............37
4.3 小結...........................................41
第五章 結論........................................42
參考文獻...........................................43

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