John R. Saylor, Ph.D.
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Scavenging
(1)
Visualization of the cylindrical nodes in a cylindrical ultrasonic transducer (Tyler Merrell).
(2)
Visualizations of acoustically levitated drops (Produced by Steven Fredericks and Weiyu Ran for the 2012 Clemson Science as Art Competition (2nd place).
(3)
Youtube video of levitated drops (Weiyu Ran and Steven Fredericks).
(4)
A movie showing the formation of accretion disks. A fine water mist is introduced into the field and the small drops migrate toward the nodes forming these disks. The small drops begin to agglomerate, forming large drops in the disk center. Eventually these drops are big enough to fall, and the process begins again.
(5)
A movie of the accretion disks which form when a spray is injected into the ultrasonic field. Particle scavenging is enhanced in these disks.
(6)
A movie of a single water drop levitated in an ultrasonic transducer. This was taken by my Ph.D. student, Jie Kou, with a commercial video camera (hand-held). The horizontal dimension of these images are about two inches.
(7)
A high speed (1000 fps) movie of a levitated drop. The ultrasonic carrier frequency (~30kHz) is being modulated at about 100Hz, causing the drop to undergo shape mode oscillations. This movie was acquired by my undergraduate researcher, Brantley Mills.
(8)
A movie obtained of a larger drop showing larger oscillation amplitudes (Brantley Mills).
(9)
A movie obtained under the same conditions, but with different lighting conditions (Brantley Mills).
Last Updated November 2, 2018.
