Midair single-sided acoustic levitation in high-pressure regions of zero-order Bessel beams

2024/12/20 by Yusuke Koroyasu, Anonymous, Koroyasu, Yusuke +10
Engineering · Materials Science · Mathematics · Physics and Astronomy · #Acoustic levitation #Acoustics #Bessel beam #Bessel function #Electrical engineering #Engineering #Environmental science #Gas Dynamics and Kinetic Theory #Laser beams #Levitation #Materials science #Mechanics #Microfluidic and Bio-sensing Technologies #Orbital Angular Momentum in Optics #Physics #Plasma and Flow Control in Aerodynamics #Rocket and propulsion systems research #Sound pressure #Ultrasound and Cavitation Phenomena

paper · pdf · doi:10.1103/pfkh-4x7j

openalex publication_date 2026/07/17 · openalex created_date 2026/07/18 · openalex updated_date 2026/07/18

Abstract

Acoustic levitation enables non-contact manipulation using sound waves. While conventional methods entrap particles at pressure nodes (zero-pressure region surrounded by high-pressure), we demonstrate stable acoustic levitation and translation in mid-air within a high-pressure axial core of a single-sided zero-order Bessel beam for the first time. The trap operates at a long working distance, up to 397 mm (46.6 λ), supports simultaneous multi-particle levitation, and maintains stability over obstacles. Our work establishes a new paradigm for single-sided acoustic manipulation in mid-air.

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