Droplets generation by a torsional bolt-clamped type transducer and micropore plate

Takuya Harada, Naoyuki Ishikawa, Takefumi Kanda, Koichi Suzumori, Yoshiaki Yamada, Ken Ichiro Sotowa

Research output: Contribution to journalConference article

2 Citations (Scopus)


In this study, a torsional bolt-clamped Langevin-type has been used for generating micro droplets. A plate had a micropore and was attached at the tip of the was oscillated by the transducer. By using torsional , many micropores can be oscillated uniformly. When micropore plate was not oscillated, droplets were generated . On the contrary, when a micropore plate was, droplets were generated regularly. When the pore , the vibrational amplitude and the resonance frequency 16m, 0.62mp-p and 56 kHz, respectively, the averaged of droplets was 26.8m. The standard deviation of the was 1.41. In addition, by using this transducer, W/O (Water-in-Oil) emulsions were generated in air-liquid phase. the same condition, the averaged diameter of emulsion 35.0m, the standard deviation was 1.9 and the coefficient ofwas 5.5.

Original languageEnglish
Article number4803356
Pages (from-to)627-630
Number of pages4
JournalProceedings - IEEE Ultrasonics Symposium
Publication statusPublished - Dec 1 2008
Event2008 IEEE International Ultrasonics Symposium, IUS 2008 - Beijing, China
Duration: Nov 2 2008Nov 5 2008


  • droplet; emulsion; Langevin-type transducer; micropore plate; ultrasonic vibrator

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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