摘要
在基于衰减全反射原理的基础上提出一种新的测量方法,动态研究漂白动力学过程,即利用波导的衰减全反射吸收峰对聚合物材料的折射率和厚度敏感的特性,实时测量聚合物材料的折射率和厚度.实验系统采用CCD摄像头将标志波导模式的一组暗线显示在计算机屏幕上,然后根据暗线的移动,可以精确测量每一时刻波导薄膜的折射率和膜厚.利用这种技术,对聚合物薄膜的光漂白过程进行了实时监控.发现在光漂白全过程中,聚合物薄膜的折射率和厚度的变化同时存在化学和物理两种变化过程.
A novel real-time measurement method to determine the refractive index and the thickness of a polymer film during photobleaching process was proposed based on the non-scanning attenuated total reflection （ATR） technique. Several dark lines corresponding to the guided-wave modes were demonstrated on the computer screen by a CCD camera, According to the shift of the dark lines, the changing values of refractive index and thickness of the polymer film can be simultaneously determined in time during photobleaching process. And we found that both chemical and physical change processes existed in the changes of refractive index and thickness of the polymer.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2008年第7期1321-1325,共5页
Acta Physico-Chimica Sinica
基金
国家自然科学基金(60237010)
江西省教育厅(JXJG061506)资助项目
关键词
衰减全反射
聚合物波导
光漂白
Attenuated total reflection
Polymer waveguide
Photobleaching
