A noncontacting technique for measuring surface tension of liquids

@inproceedings{Cinbis1999ANT,
  title={A noncontacting technique for measuring surface tension of liquids},
  author={C. Cinbis and Butrus T. Khuri-Yakub and Edward and L.. and Ginzton},
  year={1999}
}
We have developed a novel instrument for measuring the surface tension of liquids. It utilizes ultrasonic and optical methods to excite and detect a capillary wave packet. A focused ultrasonic transducer is used to generate a mound on the surface of a liquid. Capillary waves propagate radially outward from the mound, and a noncontacting confocal optical microscope measures the amplitude of the wave packet at any distance away from the excitation point. We invert the measured wave amplitude to… CONTINUE READING

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