Application of an ultrasonic focusing radiator for acoustic levitation of submillimeter samples

Journal Article · Thu Jan 01 00:00:00 EST 1981 · Ultrason. Symp. Proc.; (United States)

DOI:https://doi.org/10.1109/ULTSYM.1981.197755· OSTI ID:6220567

Lee, M C

An acoustic apparatus has been specifically developed to handle samples of submillimeter size in a gaseous medium. This apparatus consists of an acoustic levitation device, deployment devices for small liquid and solid samples, heat sources for sample heat treatment, acoustic alignment devices, a cooling system and data-acquisition instrumentation. The levitation device includes a spherical aluminum dish of 12'' diameter and 0.6'' thickness, 130 pieces of PZT tranducers attached to the back side of the dish and a spherical concave reflector situated in the vicinity of the center of curvature of the dish. The three lowest operating frequencies for the focusing-radiator levitation device are 75, 105 and 163 kHz, respectively. In comparison with other levitation apparatus, it possesses a large radiation pressure and a high lateral positional stability. This apparatus can be used most advantageously in the study of droplets and spherical shell systems, for instance, for fusion target applications.

• Research Organization: California Inst. of Tech., Pasadena
• OSTI ID: 6220567
• Journal Information: Ultrason. Symp. Proc.; (United States), Journal Name: Ultrason. Symp. Proc.; (United States)
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DROPLETS
LEVITATION
SAMPLE PREPARATION
TARGETS
FABRICATION
ACOUSTICS
MATERIALS
MELTING
TRANSDUCERS
PARTICLES
PHASE TRANSFORMATIONS
420200* - Engineering- Facilities
Equipment
& Techniques
700200 - Fusion Energy- Fusion Power Plant Technology