Contact angle measuring instrument
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United States of America Patent
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Apr 26, 2016
Grant Date -
Dec 17, 2015
app pub date -
Jun 15, 2015
filing date -
Jun 13, 2014
priority date (Note) -
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Abstract
The subject matter of this invention is a device for measuring the contact angle of a liquid drop on a material surface. The shadow of a drop of a test liquid is projected onto a tilted shadow surface. An image of the drop on the shadow surface is recorded with an image recording device, and the contact angle is calculated from the image and the known angle of tilt of the shadow surface. A method that is suitable for this is likewise disclosed.
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