2028-08-26 筑波大学
図 ゼロ次ベッセルビームによる空中浮遊の仕組みと浮遊できる範囲
＜関連情報＞
- https://www.tsukuba.ac.jp/journal/technology-materials/20260826140000.html
- https://www.tsukuba.ac.jp/journal/pdf/p20260826140000.pdf
- https://journals.aps.org/prl/abstract/10.1103/pfkh-4x7j
ゼロ次ベッセルビームの高圧領域における空中片側音響浮遊 Midair Single-Sided Acoustic Levitation in High-Pressure Regions of Zero-Order Bessel Beams
Yusuke Koroyasu, Christopher Stone, Yoichi Ochiai, Takayuki Hoshi, Bruce W. Drinkwater, and Tatsuki Fushimi
Physical Review Letters Published: 24 August, 2026
DOI: https://doi.org/10.1103/pfkh-4x7j
Abstract
Acoustic levitation enables noncontact 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 midair within a high-pressure axial core of a zero-order Bessel beam for the first time. The trap operates at a long working distance, up to 397 mm (46.6), supports simultaneous multiparticle levitation, and maintains stability over obstacles. Our work establishes a new paradigm for single-sided acoustic manipulation in midair.
