Al Jamii Zahra（D2）の論文が Acoustical Science and Technology に掲載 に掲載

容易な注入と排出機能の付いた超音波液滴浮揚のための傾斜設置構造に関するAl Jamii Zahra (D2) の論文がAcoustical Science and Technology に掲載されました。

Al Jamii Zahra, Yuji Wada, Kentaro Nakamura. Angled setup for ultrasonic droplet levitation with easy injection and ejection capability, Acoustical Science and Technology, vol. 47, no.2, pp.132-141 (2026).

This study investigates strategies to enhance the loading and dispensing capabilities of a droplet in ultrasonic levitation systems through acoustic field optimization. Using a 28.58 kHz transducer, two approaches were evaluated: (1) horizontal standing waves with a 5 angled reflector at
first- to third-order resonances, and (2) inclined standing waves at different angles (first-order resonance) under a fixed surface vibration velocity of 0.8 m/s. Results show that the horizontal configurations with the angled reflector required up to 112.5% higher surface vibration velocity to
reach comparable levitation performance to that of parallel reflectors, revealing inefficiencies in reflector-angle adjustments. In contrast, tilting the standing wave angle to 45 significantly enhanced stability, enabling reliable levitation of an averaged 1.0 mL droplet with reduced energy input. The inclined-wave method outperformed reflector-angle modifications, achieving precise droplet insertion and dispensing while minimizing acoustic energy consumption.