利用轉換光學改變金屬奈米圓柱外的介電質介電係數強度，使表面電漿子在奈米金屬柱上傳播時，能量較不易散射，因此我們可以觀察到原本因散射導致能量過小而無法觀察的現象。
本篇論文主要討論光在轉換光學環境下奈米尺度的金屬圓柱系統中的傳導行為及特性，討論方式以理論推導、數值模擬、以及文獻參考為主，模擬的方法採用有限時域差分法(FDTD)模擬計算，並利用光在系統中的波函數以及色散關係為理論基礎，推導出光的螺旋模態以及在轉換光學系統下的變化。

In order to decrease the scattering of spiral mode on the metallic nanorod, we use transformational optics to change the epsilon which covers on the nanorod. Therefore we can observe the phenomenon that we couldn't observe before.
This paper mainly discusses the propagative behavior and characteristic of light on the metallic nanorod with transformational optics. We use FDTD in simulation calculation, and base on the wave function and dispersion relation of light ,to derivate the difference between the spiral mode in uniform system and in transformational optics system.

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