Rapid rise of planar object by near-field acoustic levitation on recessed acoustic radiation surface

Aono, Kohei; Aoyagi, Manabu

doi:10.1016/j.ultras.2021.106596

Cited by 9 publications

(1 citation statement)

References 43 publications

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“…[13][14][15][16][17][18][19][20][21][22] Ultrasonic actuation has been studied widely in the field of friction driving force and levitation. [23][24][25][26][27][28][29][30][31][32][33] Swimmer using an ultrasonic transducer, namely an acoustic underwater propulsion system, is easy to simple structure and downsize, because the propulsion force can be obtained simply by applying a highfrequency voltage to the ultrasonic transducer. [34][35][36][37][38][39] In previous research, the self-propelled acoustic swimmer using thickness-vibration-mode transducer has been evaluated widely.…”

Section: Introductionmentioning

confidence: 99%

Multi-degrees-of-freedom swimmer using an ultrasonic longitudinal transducer

Tanimura

Kong

Aoyagi

2022

Jpn. J. Appl. Phys.

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Acoustic underwater propulsion systems based on ultrasonic transducer have been studied. In previous research, the self-propelled acoustic swimmer using thickness-vibration-mode transducer is evaluated widely. The thickness-vibration-mode transducer is excited in the thickness and radial direction. Because the acoustic propulsion system is based on the acoustic driving force, the vibration in radial direction is hard to provide the propulsion thrust. In this study, a cylindrical transducer, the pure longitudinal vibrator, is evaluated for the acoustic underwater propulsion system. A prototype swimmer is designed and fabricated. The admittance difference of transducer in water and in air is investigated. The zero-speed propulsion (ZSP) force and no-load speed (NLS) are measured in water. Multi-degrees-of-freedom swimmer with the multiple cylindrical transducers is evaluated. Because of the small size, high power density, simple structure and multi-degrees-of-freedom, self-propelled acoustic swimmer is suitable for applications such as inspection and repairment robot in liquid environment.

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