超音波の音軸を交差させて生成される定在波音場を用いた二次元マイクロマニピュレーション(<小特集>音響利用技術-音響情報・音響エネルギー-)

概要

論文の詳細を見る
As a non-contact maicromanipulation technique, it is possible to trap particles in water at nodes of an ultrasonic standing wave field generated between a transducer and a reflector and to transport them using a frequency-shifting operation. Since there are several problems coming from resonance of the sound field with this scheme, the authors proposed a novel manipulation technique for particles using a standing wave field generated by two transducers whose sound beam axes were crossing to each other and accomplished one-dimensional manipulation of a polystyrene particle. The present paper describes an extension of this method adding one more transducer, which realizes two-dimensional manipulation suppressing unstable motion observed in the one-dimensional operation. Experiments in water using polystyrene particles confirmed the principle of the two-dimensional manipulation and agreed well with a numerical analysis of the sound field.
一般社団法人日本機械学会の論文
2001-05-25