发现了凹形弯曲液面上边界反射光场的带状亮场扩张效应.当平行激光束垂直入射到两平行平板之间润湿效应引起的凹形弯曲液面上时,边界反射产生特殊反射图样,图样的中间为带状亮场,两侧为暗场,亮场中有清晰的带状衍射条纹,并且亮场宽度随入射光束宽度的增加而迅速地变大.分析了反射图样中带状亮场宽度与入射光束宽度的解析关系,进而精确地描述凹形弯曲液面的斜率和上升高度,建立了一种描述凹形弯曲液面特性的新方法.
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