TY - JOUR
T1 - Droplet generation using a torsional Langevin-type transducer and a micropore plate
AU - Harada, Takuya
AU - Ishikawa, Naoyuki
AU - Kanda, Takefumi
AU - Suzumori, Koichi
AU - Yamada, Yoshiaki
AU - Sotowa, Ken Ichiro
N1 - Funding Information:
This work was partially supported by the Cooperation of Innovative Technology and Advanced Research in Evolutional Area (CITY AREA) of the Ministry of Education, Culture, Sports, Science and Technology.
PY - 2009/10
Y1 - 2009/10
N2 - This paper reports on droplet generation by using a torsional bolt-clamped Langevin-type transducer and a micropore plate. When the micropore plate was not oscillated, droplets were generated irregularly. On the other hand, when the micropore plate was oscillated, droplets were generated regularly. In addition, by changing the micropore diameter, the generated droplets' diameter was varied in proportion to the micropore area. Under the condition that the pore diameter, the vibrational amplitude and the resonance frequency were 16 μm, 0.62 μmp-p and 56 kHz, respectively, the average diameter of droplets was 26.8 μm and the standard deviation was 1.4. Additionally, W/O (water-in-oil) emulsions were generated in air-liquid phase by the transducer. Under the same condition, generated average diameter of emulsions was 35.0 μm, the standard deviation was 1.9 and the coefficient of variance was 5.5. From this result, monodisperse emulsions were generated.
AB - This paper reports on droplet generation by using a torsional bolt-clamped Langevin-type transducer and a micropore plate. When the micropore plate was not oscillated, droplets were generated irregularly. On the other hand, when the micropore plate was oscillated, droplets were generated regularly. In addition, by changing the micropore diameter, the generated droplets' diameter was varied in proportion to the micropore area. Under the condition that the pore diameter, the vibrational amplitude and the resonance frequency were 16 μm, 0.62 μmp-p and 56 kHz, respectively, the average diameter of droplets was 26.8 μm and the standard deviation was 1.4. Additionally, W/O (water-in-oil) emulsions were generated in air-liquid phase by the transducer. Under the same condition, generated average diameter of emulsions was 35.0 μm, the standard deviation was 1.9 and the coefficient of variance was 5.5. From this result, monodisperse emulsions were generated.
KW - Droplet
KW - Emulsion
KW - Langevin-type transducer
KW - Micropore plate
KW - Torsional
KW - Ultrasonic vibration
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U2 - 10.1016/j.sna.2009.08.007
DO - 10.1016/j.sna.2009.08.007
M3 - Article
AN - SCOPUS:71749114820
VL - 155
SP - 168
EP - 174
JO - Sensors and Actuators, A: Physical
JF - Sensors and Actuators, A: Physical
SN - 0924-4247
IS - 1
ER -