WITHDRAWN: Design of a probe-type acoustic tweezer by acoustic-streaming field optimization

• The evaluation criteria of acoustic-streaming field optimization are proposed. • The optimized capture condition is concluded by finite element analysis. • Ultrasonic vibration device for optimized capture vibration parameter is designed. • The probe-type acoustic tweezer can capture, translate and release objects. This paper presents a novel design process of a probe-type acoustic tweezer for micro/nano manipulation. The qualitative evaluation criteria of manipulation-oriented acoustic-streaming field are proposed, and the optimized capture condition is concluded by finite element optimization accordingly for the first time. The scheme of ultrasonic vibration device for optimized capture condition is proposed, which is composed of two parallel-connected sandwich piezoelectric transducers. Initial structural parameters of the vibration device are determined by an analytical model based on the electromechanical equivalent theory, and it is further optimized using finite element method. Dynamic performances of the vibration device are then analyzed through modal analysis and frequency response analysis. A prototyped vibration device is fabricated and experimental investigations are conducted to further test its characteristics. The results show that the device can vibrate with the optimized capture condition. The experimental setup of the probe-type acoustic tweezer system is established, and it is proven that it can successfully capture, translate and release nanowires. Graphical Abstract. .