利用脈衝雷射可以在金膜表面達到退火的效果並在表面上形成奈米金粒子。退火後形成奈米金粒子與退火前的金膜樣品，其吸收光譜有一明顯的吸收峰值差異，因為奈米金粒子所產生之電漿效應可以直接呈現在波長的吸收上，且吸收的波段與奈米金粒子的粒徑大小及週遭折射率有關。因此，本論文將針對這兩個因素做為探討並利用液晶材料雙折射的特性調控奈米金粒子吸收波峰的波長藍移或紅移現象。

"none"

目錄 I
摘要 III
圖表索引 IV
第一章 緒論 1
1-1 表面電漿 1
1-2 粒子電漿子 2
1-3 研究目的 3
1-4 研究方法 3
第二章 相關理論 5
2-1 光在粒子的散射與吸收 5
2-2 金屬粒子的表面電漿共振 6
2-3 吸收光譜的定義 9
2-4 液晶的光學異向性與雙折射性 10
2-5 光配向簡介 14
2-6 Photo-isomerization 15
2-7負力矩效應：Gibbons’ Model 16
第三章 樣品製作與實驗方法 19
3-1 樣品製作 19
3-2 實驗裝置與方法 23
第四章 實驗結果與討論 27
4-1 探討奈米粒子顆粒大小對吸收光譜的影響 27
4-2 金膜在不同雷射能量退火後之AFM圖 28
4-3 奈米金粒子環境折射率對吸收光譜的影響 31
4-4 光偏振對奈米金粒子吸收光譜的影響 33
4-5 電場調制液晶排列對奈米金粒子吸收光譜的影響 34
4-6 光配向改變液晶排列對金粒子吸收光譜的影響 35
第五章 結論 41
參考文獻 43

1.U. Fano, J. Opt. Soc.Am. 31, 213 (1941)
2.V. Zayats, I. I. Smolyaninov, A. A. Maradudin, Phys. Reports. 408, 131 (2005).
3.R. W. Wood, Philos. Mag. 4, 396 (1902).
4.M. Moskovits, Rev. Mod. Phys. 57, 783 (1985).
5.J. R. Sambles, Nature (London) 391, 641 (1998)
6.K.-H. Su, Q.-H. Wei, X. Zhang, J. J. Mock, D. R. Smith, and S.Schultz, “Interparticle coupling effect on plasmon resonances ofnanogold particles,” Nano Letter, 3, 1087-1090 (2003).
7.P. F. Liao and A. Wokaun, ”Lightning rod effect in surface enhanced Raman scattering,” J. Chem. Phys., 76, 751-752 (1982).
8.J.P. Kottmann, O. J.F. Martin, D. R. Smith, and Sheldon Schultz, “Spectral response of plasmon resonant nanoparticles with a non-regular shape,” Optics express, 6, 213-219 (2000).
9.J. S. Bradley, The Chemistry of Transition Metal Colloids. In Clusters and Colloids, Schmid, G., Ed.; VCH Publishers: New York, NY(USA), 459-537(1994).
10.M. Brust, M. Walker, D. Bethell, R. Whyman, Synthesis of Thiol-derivatised Gold Nanoparticles Nanoparticles a Two-Phase Liquid-Liquid System, J. Chem. Soc. Chem. Commun., 801-802 (1994).
11.M. T. Reetz, M. Winter, R. Breinbauer, T. -A. Thomas, W. Vogel, Size-Selective Electrochemical Preparation of Surfactant-Stabilized Pd-,Ni- and Pt/Pd Colloids, Chem. Eur. J., 7, 1084-1094(2001).
12.N. R. Jana, L. Gearheart, C. J. Murphy, Evidence for Seed-Mediated Nucleation in the Chemical Reduction of Gold Salts to Gold Nanoparticles, Chem. Mater., 13, 2313-23 (2001).
13.Craig F. Bohren and Donald R. Huffman, "Absorption and scattering of light by small particles, " Wiley, New York(1998).
14.S. K. Ghosh, T. Pal, Interparticle Coupling Effect on the Surface Plasmon Resonance of Gold Nanoparticles: From Theory to Applications, Chem. Rev., 107, 4797-4862(2007).
15.P. B. Johnson, R. W. Christy, Optical Constants of Nobel Metals, Phys. Rev. B, 6, 4370(1972).
16.Cecilia Noguez, J. Phys. Chem. C 111,3806-3819(2007).
17.W. C. Hung, W. H. Cheng, Y. S. Lin, D. J. Jang, I. Min. Jiang, and M. S. Tsai, J. Appl. Phys. , 104, 063106(2008).
18.Wayne M. Gibbons, Paul J. Shannon, Shao-Tang Sun, and Brian J. Swetlin, Nature 351, 49(1991).
19.Martin Schadt, Klaus Schmitt, Vladimir Kozinkov and Vladimir Chigrnov, Jpn. J. Appl. Phys., 31,2155(1992).
20.O. Yaroshchuk, L. G. Cada, M. Sonpatki, and L.-C. Chien, APL,79,30(2001).
21.Michinon Nishikawa, Tamas Kosa and John L.West., Jpn. J. Appl. Phys., 38, 334(1999).
22.U. Kreibig, M. Vollmer, Optical Properties of Metal Clusters, Springer,Berlin, (1995).