Active control of microbubbles stream in multi-bifurcated flow by using 2D phased array ultrasound transducer

Ren Koda, Jun Koido, Naoto Hosaka, Takumi Ito, Shinya Onogi, Takashi Mochizuki, Kohji Masuda, Seiichi Ikeda, Fumihito Arai

Research output: Contribution to journalArticle

Abstract

We have previously reported our attempt to propel microbbles in flow by a primary Bjerknes force, which is a physical phenomenon where an acoustic wave pushes an obstacle along its direction of propagation. However, when ultrasound was emitted from surface of the body, controlling bubbles in against flow was needed. It is unpractical to use multiple transducers to produce the same number of focal points because single element transducer cannot produce more than two focal points. In this study, we introduced a complex artificial blood vessel according to a capillary model and a 2D array transducer to produce multiple focal points for active control of microbubbles in against flow. Furthermore, we investigated bubble control in viscous fluid. As the results, we confirmed clearly path selection of MBs in viscous fluid as well as in water.

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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