Preliminary Study of Online Detection in Thin Channel

[[abstract]]本論文主要關於利用雷射、光纖、光電倍增管 (PMT) 在微通道分離槽中發展線上偵測的方法之研究。自行將雷射光聚光到光纖進而激發螢光奈米粒子，再用另外一條光纖進行收光動作。再將收到的螢光透過光纖傳輸到光電倍增管前端，觀察光電倍增管訊號變化。 在本實驗中，我們將製備好的螢光奈米粒子，配製於不同的濃度。利用雷射激發樣品，在光電倍增管訊號中可以發現訊號強度會隨著樣品本身的濃度改變，呈現線性成長，但是到達一定濃度之後便無明顯變化，偵測範圍為3x1014 ~ 1x1015 顆/毫升，主要線性範圍為3x1014 ~ 8x1014 顆/毫升，進而達到微通道中線上偵測方法。[[abstract]]This study grow a method of online detection in microchannel by using laser, optical fibers, and photomultiplier tube (PMT). We used the laser light focusd by optical fiber to excite the fluorescent nanopartilces. The responded fluorescent signal is collected and transferred to the PMT by another optical fiber, and the change of the signal is observed. In our experiment, we use laser light to excite the samples, and found that the intensity of the signal is in direct proportion to the concentration of samples. The detection range is from 3x1014 to 1x1015 particles/ml, and the linear range is from 3x1014 to 8x1014 particles/ml.[[note]]碩