Automatic measuring method for contact angle and interfacial tension
专利汇可以提供Automatic measuring method for contact angle and interfacial tension专利检索，专利查询，专利分析的服务。并且PURPOSE: To speedily and automatically obtain an accurate measured value by enlarging and picking up an image of a drop of liquid dripped on a fixed plate by a TV camera nearly horizontally, and discriminating the video signal of the camera through a computer.
CONSTITUTION: When the droplet 9 dripped on the fixed plate 8 of glass, etc., is photographed by the TV camera horizontally to the fixed plate 8, a real image 9a and a virtual image 9b of the droplet are displayed together on a monitor TV by the total reflection of the surface of the solid plate 8. Further, the video signal of the TV camera is A/D-converted and inputted to the computer, and only the one-side part obtained by rotating the images 9a and 9b by 90° is displayed in a chevron on a CRT display device. This chevron part is displayed with a low-brightness signal, so the height (h) and width (r) of the droplet are found by a low-brightness counting circuit and substituted in a specific formula to find a contact angle θ. Similarly, the length between specific points of the liquid drop which is injected by a specific amount from the tip of a stylus pipe is found automatically and substituted in a specific formula to measure an interfacial tension value automatically.
COPYRIGHT: (C)1988,JPO&Japio，下面是Automatic measuring method for contact angle and interfacial tension专利的具体信息内容。
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