激光超声微机械臂

2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121) Pub Date : 2000-10-22 DOI:10.1109/ULTSYM.2000.922639

M. Takeuchi, R. Murayama, K. Kobayashi, T. Kojima

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引用次数: 2

摘要

以前，我们提出了基于甚高频(VHF)超声的辐射力对液体中微米级颗粒的超声微操作(UMM)技术。本文报道了一种新型激光超声微机械臂(LUMM)，其中声辐射力和光辐射力作为非接触力互补结合。实验用LUMM由中心频率为49 MHz的漏波换能器、675 nm最大功率为5 mW的激光二极管和生物显微镜组成。利用LUMM，我们成功地从大量12-/spl mu/m直径的聚苯乙烯球中去除不需要的颗粒，实现了液体中特定颗粒的快速选择。LUMM也被用来根据斯托克斯定律估计超声波辐射力的水平分量，根据测量的临界速度，机械运动的粒子释放捕获。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Laser ultrasonic micromanipulator

Previously we have proposed ultrasonic micromanipulation (UMM) techniques for micron-sized particles in liquid based on the radiation forces of very-high-frequency (VHF) ultrasound. In this paper, we report a new laser ultrasonic micromanipulator (LUMM) in which the acoustic radiation force and optical radiation force combine complementarily as noncontact force. An experimental LUMM consists of an acoustic leaky wave transducer of center frequency 49 MHz, a laser diode with a maximum power 5 mW at 675 nm and a biological microscope. Using the LUMM, we have carried out successfully the rapid selection of a specific particle in liquid by the removal of unwanted particles from large number of 12-/spl mu/m-diameter polystyrene spheres. The LUMM was also used to estimate the horizontal component of the ultrasonic radiation force based on the Stokes law from the measured critical velocity at which the trapping is released by mechanically moving particles.

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来源期刊

2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)

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