TY - GEN
T1 - Observations of different oscillation modes and control of droplet sequence in alternating droplet generation
AU - Um, Eujin
AU - Kim, Hyoungsoo
AU - Jeong, Joonwoo
AU - Stone, Howard A.
N1 - Publisher Copyright:
© 15CBMS-0001.
PY - 2015
Y1 - 2015
N2 - Controlling the sequence of microdroplet generation is useful for quantitative manipulation of multiple fluids, but little understanding is available for how the sequence can be determined based upon the geometry of a microchannel and the fluid properties. In this work, we study the design of a double Tjunction microchannel, and observe that there are three modes of oscillations of the droplet generation: i) one by one alternate generation, ii) synchronization, and iii) fluctuations. We also report that if the fluids from the two branches have asymmetric properties (e.g. viscosity), we can change the ratios of the droplets in sequence.
AB - Controlling the sequence of microdroplet generation is useful for quantitative manipulation of multiple fluids, but little understanding is available for how the sequence can be determined based upon the geometry of a microchannel and the fluid properties. In this work, we study the design of a double Tjunction microchannel, and observe that there are three modes of oscillations of the droplet generation: i) one by one alternate generation, ii) synchronization, and iii) fluctuations. We also report that if the fluids from the two branches have asymmetric properties (e.g. viscosity), we can change the ratios of the droplets in sequence.
KW - Alternating droplet generation
KW - Microdroplets
KW - Multiphase oscillation
UR - http://www.scopus.com/inward/record.url?scp=84983356870&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84983356870&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84983356870
T3 - MicroTAS 2015 - 19th International Conference on Miniaturized Systems for Chemistry and Life Sciences
SP - 1041
EP - 1043
BT - MicroTAS 2015 - 19th International Conference on Miniaturized Systems for Chemistry and Life Sciences
PB - Chemical and Biological Microsystems Society
T2 - 19th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2015
Y2 - 25 October 2015 through 29 October 2015
ER -