懸浮液穩定性的散光原理量測方法

Abstract

本論文針對懸浮液穩定性之偵測，建立一套應用散光原理之實驗方法：以He-Ne雷射為光源，利用微粒對光之消散、散射現象，將量測訊號經過處理以求得分析懸浮液之物理現象。研究中除建立量測的完整原理與實驗配置，並針對特定奈米級微粒之懸浮液進行必要的實驗及理論間關連式運用。運用此一方法，我們同時對懸浮液對時間之穩定性作一初步了解，分析包含沉降速度與濃度分佈和粒徑對時間的變化量測。

The present study is proposed in order to develop a measuring technique for monitoring the stability of suspensions. A He-Ne laser is used as light source and a technique associated with the use of light scattering and extinction measurements is considered. By processing the measured signal we can analyze the physical phenomena of the suspension. Both measuring theory and experimental set-up are built. With the technique, specific suspension of nano-particles is tested and correlations be made for analyzing the effect of optical arrangements in experimentals. Besides, the sedimentation process is investigated. The analysis includes the measurements of settling of particles and also measurements of the variations of both concentration and particle-size distributions with time