The Bio-Technology Application of Optical Tweezer Using Laser-heated Fiber Optic Microlens
碩士 === 國立高雄應用科技大學 === 光電與通訊工程研究所 === 105 === These are three phases in this study. In the first phase, fiber microlenses are sequentially made by wet chemical etching and laser melting. The resultant lenses are analyzed to obtain their cone angles or radius of curvature by an image processing code w...
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ndltd-TW-105KUAS08010052019-05-15T23:24:48Z http://ndltd.ncl.edu.tw/handle/u8u295 The Bio-Technology Application of Optical Tweezer Using Laser-heated Fiber Optic Microlens 使用雷射熔燒光纖微透鏡之光鑷夾生技應用 LIN, HONG-ZHANG 林泓樟 碩士 國立高雄應用科技大學 光電與通訊工程研究所 105 These are three phases in this study. In the first phase, fiber microlenses are sequentially made by wet chemical etching and laser melting. The resultant lenses are analyzed to obtain their cone angles or radius of curvature by an image processing code written in MATLAB. In the second phase, a cone-shaped or hemisphere-shaped microlens is selected to construct an optical tweezer. A 650 nm laser is used as the light source of the system. In the third phase, four optical trapping experiments are conducted individually on polystyrene particles and yeasts. The effect of different shapes of fiber microlenses on the trapping efficiency of optical tweezers is investigated by changing the incline angle for trapping, the sample diameter, and the microlens shape. In the experiment of trapping polystyrene particles, an optical tweezer contains a cone-shaped fiber microlens. The optimal trapping efficiency is about 8.1%. However, if an optical tweezer contains a hemisphere-shaped fiber microlens, the optimal trapping efficiency is about 10.1%. The results show a linear relationship between the diameter of particle and trapping efficiency. In the experiments of trapping on beer yeasts, if an optical tweezer contains a cone-shaped fiber microlens, the optimal trapping efficiency is about 5.4%. On the other hand, if an optical tweezer contains a hemisphere-shaped fiber microlens, the optimal trapping efficiency is about 2.8%. The results show that the trapping efficiency of the optical tweezer is greatly affected by the shape of the fiber microlens. LIU, SHIH-KUN 劉世崑 2017 學位論文 ; thesis 136 zh-TW |
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碩士 === 國立高雄應用科技大學 === 光電與通訊工程研究所 === 105 === These are three phases in this study. In the first phase, fiber microlenses are sequentially made by wet chemical etching and laser melting. The resultant lenses are analyzed to obtain their cone angles or radius of curvature by an image processing code written in MATLAB. In the second phase, a cone-shaped or hemisphere-shaped microlens is selected to construct an optical tweezer. A 650 nm laser is used as the light source of the system. In the third phase, four optical trapping experiments are conducted individually on polystyrene particles and yeasts. The effect of different shapes of fiber microlenses on the trapping efficiency of optical tweezers is investigated by changing the incline angle for trapping, the sample diameter, and the microlens shape.
In the experiment of trapping polystyrene particles, an optical tweezer contains a cone-shaped fiber microlens. The optimal trapping efficiency is about 8.1%. However, if an optical tweezer contains a hemisphere-shaped fiber microlens, the optimal trapping efficiency is about 10.1%. The results show a linear relationship between the diameter of particle and trapping efficiency. In the experiments of trapping on beer yeasts, if an optical tweezer contains a cone-shaped fiber microlens, the optimal trapping efficiency is about 5.4%. On the other hand, if an optical tweezer contains a hemisphere-shaped fiber microlens, the optimal trapping efficiency is about 2.8%. The results show that the trapping efficiency of the optical tweezer is greatly affected by the shape of the fiber microlens.
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author2 |
LIU, SHIH-KUN |
author_facet |
LIU, SHIH-KUN LIN, HONG-ZHANG 林泓樟 |
author |
LIN, HONG-ZHANG 林泓樟 |
spellingShingle |
LIN, HONG-ZHANG 林泓樟 The Bio-Technology Application of Optical Tweezer Using Laser-heated Fiber Optic Microlens |
author_sort |
LIN, HONG-ZHANG |
title |
The Bio-Technology Application of Optical Tweezer Using Laser-heated Fiber Optic Microlens |
title_short |
The Bio-Technology Application of Optical Tweezer Using Laser-heated Fiber Optic Microlens |
title_full |
The Bio-Technology Application of Optical Tweezer Using Laser-heated Fiber Optic Microlens |
title_fullStr |
The Bio-Technology Application of Optical Tweezer Using Laser-heated Fiber Optic Microlens |
title_full_unstemmed |
The Bio-Technology Application of Optical Tweezer Using Laser-heated Fiber Optic Microlens |
title_sort |
bio-technology application of optical tweezer using laser-heated fiber optic microlens |
publishDate |
2017 |
url |
http://ndltd.ncl.edu.tw/handle/u8u295 |
work_keys_str_mv |
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