A multi-transducer near field acoustic levitation system for noncontact transportation of large-sized planar objects

Takafumi Amano, Yoshikazu Koike, Kentaro Nakamura, Sadayuki Ueha, Yoshiki Hashimoto

Research output: Contribution to journalArticle

18 Citations (Scopus)


A new noncontact transportation system, which consists of multiple ultrasonic transducers and operates based on near-field acoustic levitation, is proposed to transport a large-sized planar object such as a glass substrate for liquid crystal devices. Using the proposed systems consisting of two and three transducers, the suspension characteristics of the levitated objects are studied as functions of both size difference and angles between the vibration systems and the levitated object. As a result, the holding force is proved to increase as the angle increases and is maximum when the horizontal dimensions of the system and the object coincide.

Original languageEnglish
Pages (from-to)2982-2985
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number5 B
Publication statusPublished - 2000 Dec 1



  • Acoustic levitation
  • Actuator
  • High power ultrasonics
  • Noncontact suspension
  • Noncontact transportation
  • Radiation pressure

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this