https://scholars.lib.ntu.edu.tw/handle/123456789/80820
標題: | 微觀粒子顯像測速儀研發與微管流量測 Development of Microscopic Particle Image Velocimetry and Measurements of Micro-channel Flow |
作者: | 沈弘俊 | 關鍵字: | 粒子顯像測速儀(PIV);微觀粒子顯像測速儀(Microscopic-PIV);微流體(Micro-Fluid);微管流(Micro-Channel);Particle Image Velocimetry (PIV);Microscopic-PIV;Micro-Fluid;Micro-Channel | 公開日期: | 31-七月-2002 | 出版社: | 臺北市:國立臺灣大學應用力學研究所 | 摘要: | 本研究是以傳統式粒子顯像測速儀(PIV)為基礎,來發展二維微觀粒子顯像測速儀(Microscopic–PIV),期望將其空間解析度降到一微米(1mμ)以下,之後設計微管流量測實驗,用以量測微管中二維流場速度場,並與理論推導出之數值做比較。主要以現有之粒子顯像測速結合光學顯微放大技術,放大觀察微小區域,以應用於微管流場流速的量測。相較於傳統式粒子顯像測速儀,本技術可以達到以下優點:更精密的空間解析度(微米以下)、便於生物醫學之應用、與其他工程上微管流流場量測。因此,此項計畫之研究成果可提供未來微流體研究更進一步定量觀察的重要方法。預期將可對未來微機電(MEMS)、生醫檢測與微流體基礎科學研究等提供重要之研究方法以及實驗數據。並可以此套系統進行改良,以適用於各微觀流場之量測,而使微觀流場之性質,不再停留於數值計算、以巨觀之觀點觀測之、或只為平均流體性質,而是可以直接量測空間與時間之流場性質,將對微觀流場領域之研究有實質貢獻。 The objectives of this proposed study are to develop a microscopic-PIV system and to apply it to the measurements of micro-channel flows. Based on the traditional PIV technique, new optical system and signal processing technique were developed for the new measurement system. The spatial resolution for this system was estimated to be within 1mμor smaller in later development. This new system can be applied to the measurements of two-dimensional flow field of micro-channels or other MEMS devices. Since the length scales for the MEMS microfluidic devices are in the order of 1-100μm, the traditional flow diagnostic tools could not be used for the flow measurements. The experimental measurements for the microfluidic devices have been limited to obtain only the bulk properties of the flow, such as the wall pressure, the mean temperature and the bulk velocity. The new microscopic-PIV system can be used to measure the whole-field instantaneous flow velocities of the micron-scale fluidic devices. The results of this study can be further applied for the measure -ments of other MEMS and bio-devices. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/21649 | 其他識別: | 902212E002207 | Rights: | 國立臺灣大學應用力學研究所 |
顯示於: | 應用力學研究所 |
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902212E002207.pdf | 369.97 kB | Adobe PDF | 檢視/開啟 |
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