臺灣博碩士論文加值系統

本論文主要探討利用單模光纖(Single-Mode Fiber)實現〝雙光束光學嵌住(Dual Beam Traps) 〞，並分析軸向力(Axial Force) 與梯度力Gradient Force)的比較。
本論文首先介紹光鉗之基本原理，也是所有鉗住的理論基礎，並簡介如何利用光纖來實現雙光束光鉗。我們利用〝Flat-Tip Fiber〞與〝Tapered Hemispherical-Tip Fiber〞兩種不同型式的光纖來鉗住微粒，想藉以了解其特性之差異。
目前並沒有一個很明確的公式可以計算 和 , 由於 是否為〝一個常數〞或是〝一個變數〞,我們並不確定?因此,我們想要去探討這個問題,並且求證〝Fsc/Fgr〞的關係。如果 為一個常數,那以後我們計算〝Fsc〞或〝Fgr〞,只要把 乘上功率即可求得〝Fsc〞或〝Fgr〞。如果以上假設不成立,那又應該是何種關係呢?這就是本篇論文想要探討的動機！

致謝
摘要
目錄
圖表目錄
---------------------------------------------------------
第一章緒論 1
1-1 本文緣起 1
1-2 論文大綱與章節安排 1
1-3 名詞定義 2
--------------------------------------------------------
第二章 光鉗的基本理論 4
2-1 光鉗的發展 4
2-2 光鉗的基本原理 8
2-3 幾何光學機制(Ray Optics Regime)下光壓的分析 18
--------------------------------------------------------
第三章 光纖的基本理論與分析 26
3-1 光纖原理 26
3-2 數值孔徑(Numerical Aperture) 32
3-3 依光纖頂端分類 33
3-4 為什麼要使用雙光束光鉗呢? 38
-------------------------------------------------------
第四章 實驗架設與結果分析 41
4-1雙光束光纖鉗住簡介 41
4-2實驗架設(一)—使用〝Flat-tip fiber〞 42
4-3實驗架設(一)—使用〝Tapered hemispherical-tip fiber〞 55
4-4 比較〝Flat-tip fiber〞與Tapered hemispherical-tip fiber〞 57
之差異
4-5實驗架設(二) 56
4-6實驗架設(三) 61
--------------------------------------------------------
第五章 結論與未來展望 65
5-1 結論 65
5-2 未來展望 65
--------------------------------------------------------
參考文獻 68

[1]S. M. Block, ”Optical Tweezers: A New Tool for Biophysics,” in Noninvasive Techniques in Cell Biology, J. K. Foskett and S. Grinstein, eds.(Wiley-Liss, New York, 1990),p.375-402.
[2]K.O. Greulich, “From Photons to the Laser Microtools,” in
Micromanipulation by Light in Biology and Medicine, K.O. Greulich, (Basel, Boston, Berlin, 1999),p.39.
[3]A.Ashkin, “Forces of a Single Beam Gradient Laser Trap on a Dielectric Sphere in the Ray Optics Regime,” Biophys. J. Vol.61,569-582(1992).
[4] K.O. Greulich, “Why and How Light Can Be Used as a Microtool,” in Micromanipulation by Light in Biology and Medicine, K.O. Greulich, (Basel, Boston, Berlin, 1999),p.90.
[5] G. Roosen, “A Theoretical and Experimental Study of the Stable Equilibrium Positions of Spheres Levitated by Two Horizontal Laser Beams,”Opt.Commun.Vol.21,189-194(1997).
[6] W. H. Wright , G. J. Sonek, and M. W. Berns,” Parametric Study of the Forces on Microspheres Held by Optical Tweezers,” Appl. Opt. Vol.33,1735-1748(1994).
[7] A. Ashkin and J. M. Dziedzic,”Feedback Stabilization of Optically Levitated Particles,” Appl. Phys. Lett.,Vol 30,203-205(1997).
[8] S. Sato and H. Inaba,”Optical Trapping and Manipulation of
Microscopic particles and Biological Cell by Laser Beams,” Optical and Quantum Electronics, Vol.28,1-16(1996).
[9] A.Ashkin, “Acceleration and Trapping of Particles by Radiation Pressure,” Phy. ReviLett.Vol.24,156-158(1970).
[10] G. Rooden and C. Inbert,”Optical Levitation by Means of Two Horizontal Laser Beams:A Therical and Experimental Study,” Phy.Lett.Vol.59A,6-8(1976).
[11] E.R. Lyons and G.J.Sonek,”Performance and Optimization of a Lensed Dual-Fiber Optical Laser Trap Micromanipulation,”
[12] A.Ashkin,”Optical Levitation of Liquid Dros by Radiation Pressure,” Science, Vol.187,1073-1075(1995).
[13]A. Constable, Jinha. Kim, Demonstration of a fiber-optical light trap〞 Optics Letters (1993)
[14] E. R .Lyons, G. J. Sonek 〝Confinement and bistability
in a tapered hemispherically lensed optical fiber trap
Appl. Phys. Lett(1995)
[15] K. Taguchi , K. Atsuta , 〝Single Laser Beam Fiber Optics Trap 〞Optical and Quantum Electronics(2001)