The near-field acoustic levitation of high-mass rotors

Journal Article · Wed Oct 15 00:00:00 EDT 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4898120· OSTI ID:22305909

Hong, Z. Y.; Lü, P.; Geng, D. L.; Zhai, W.; Yan, N.

Here we demonstrate that spherical rotors with 40 mm diameter and 0-1 kg mass can be suspended more than tens of micrometers away from an ultrasonically vibrating concave surface by near-field acoustic radiation force. Their rotating speeds exceed 3000 rpm. An acoustic model has been developed to evaluate the near-field acoustic radiation force and the resonant frequencies of levitation system. This technique has potential application in developing acoustic gyroscope.

• OSTI ID: 22305909
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
GYROSCOPES
LEVITATION
MATERIALS TESTING
MECHANICAL VIBRATIONS
ROTATION
ROTORS
SPHERICAL CONFIGURATION
ULTRASONIC WAVES