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Sonic Levitation - a Beginning

• arclein
The paper entitled, “Three-dimensional Mid-air Acoustic Manipulation by Ultrasonic Phased Arrays”, reads: “Our manipulation system has two original features. One is the direction of the ultrasound beam, which is arbitrary because the force acting toward its [center] is also utilized. The other is the manipulation principle by which a localized standing wave is generated at an arbitrary position and moved three-dimensionally by opposed and ultrasonic phased arrays.”

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