Number controllable active microdroplet merging with wide range of volume for digital chemical synthesis

Author

Yoon, D.H. ; Numakunai, S. ; Ito, Junichi ; Fukuda, Toshio ; Sekiguchi, Takeshi ; Shoji, Shuji

Author_Institution

Fac. of Sci. & Eng., Waseda Univ., Tokyo, Japan

fYear

2013

fDate

16-20 June 2013

Firstpage

2660

Lastpage

2663

Abstract

This paper presents microdroplet merging device which can actively control the number of merged microdroplets with a wide range of volume under various flow conditions. Independently generated two different droplets are trapped at pillar structure and its trapping time is controlled by horizontal pneumatic micro actuators. The droplet merging of multi-mode from no-merging to 4 droplets merging is successfully achieved with a simple single layer PDMS (polydimethylsiloxane) device. The micro pneumatic actuators widen a range of applicable droplet size with deformed channel width, as well as switching the merging mode with trapping time control.

Keywords

drops; flow control; microactuators; microchannel flow; pneumatic actuators; two-phase flow; PDMS device; channel deformation; digital chemical synthesis; droplet size; micropneumatic actuator; number controllable active microdroplet merging device; pillar structure; polydimethylsiloxane; trapping time control; Charge carrier processes; Chemicals; Merging; Microfluidics; Pneumatic actuators; Resistance; Chemical Synthesis; Horizontal Pneumatic Actuators; Merging; Microdroplet; Polydimethylsiloxane;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), 2013 Transducers & Eurosensors XXVII: The 17th International Conference on

Conference_Location

Barcelona

Type

conf

DOI

10.1109/Transducers.2013.6627353

Filename

6627353