Compact acoustic levitation device for studies in fluid dynamics and material science in the laboratory and microgravity

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Abstract
An ultrasonic levitation device operable in both ordinary ground‐based as well as in potential space‐borne laboratories is described together with its various applications in the fields of fluid dynamics, material science, and light scattering. Some of the phenomena which can be studied by this instrument include surface waves on freely suspended liquids, the variations of the surface tension with temperature and contamination, the deep undercooling of materials with the temperature variations of their density and viscosity, and finally some of the optical diffraction properties of transparent substances.

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