Measurement of Microscopic Spatial Distribution of Acoustic Radiation Force Using Microspheres and Electrostatic Force

スポンサーリンク

概要

• 論文の詳細を見る

• A sumple method for measuring the microscopic spatial distribution of the acoustic radiation force by exploiting the competition between the acoustical radiation force and the electrostatic force on charged microspheres is investigated. First, the effective charge of polystyrene spheres is measured by monitoring the mobility of the particles in the 1 Hz, 13.4 V_<pp>/mm alternating electric field, Next, the shift of the particles away from the sound pressure node with an increase in intensity of the electrostatic force is observed by optical microscopy, and finally the acoustic radiation force is estimated. In the experiment, the spatial distribution of the acoustic radiation force in the 500 kHz, 80 Vpp standing wave was proportional to the sine curve, and had the same tendency as the result obtained from calculation. The intensity was 0.5 pN for 7 μm polystyrene spheres.

• 社団法人応用物理学会の論文
• 1999-05-30

著者

• Yasuda Kenji

  Advanced Research Lab. Hitachi Lid.

関連論文

• Studies on Particle Separation by Acoustic Radiation Force and Electrostatie Force
• Concentration and Fractionation of Small Particles in Liquid by Ultrasound
• Measurement of Microscopic Spatial Distribution of Acoustic Radiation Force Using Microspheres and Electrostatic Force
• Blood Concentration by Superposition of Higher Harmonics of Ultrasound
• Length Regulation of Thin Filaments without Nebulin.

スポンサーリンク