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发现了平板润湿效应弯曲液面掠入射反射光场暗区宽度和弯曲液面接触角的关系。当平行激光束掠入射到平板润湿效应弯曲液面时产生特殊的反射图样,反射图样的中间为暗区,两侧为亮区。分析了暗区宽度和弯曲液面的最大高度关系,通过测量反射图样的暗区宽度计算出弯曲液面的最大高度,进而计算出弯曲液面的接触角。建立了一种激光掠射法测量平板润湿效应接触角的新方法。
The relationship between the width of the dark area and the contact angle of the curved liquid surface at the grazing incidence and reflection of curved liquid surface was found. When the parallel laser beam grazing incident to the plate wetting effect curved liquid surface produces a special reflection pattern, the middle of the reflection pattern dark area, on both sides of the bright area. The relationship between the width of the dark area and the maximum height of the curved liquid surface is analyzed. The maximum height of the curved liquid surface is calculated by measuring the dark area width of the reflective pattern, and the contact angle of the curved liquid surface is calculated. A new method of measuring the contact angle of plate wetting effect by laser grazing method was established.