Sheath-flow forming by using twisted micro-channel

Author

Sato, Takao ; Miyake, R.

Author_Institution

Res. Inst. for Nanodevice & Bio Syst., Hiroshima Univ., Hiroshima, Japan

fYear

2013

fDate

20-24 Jan. 2013

Firstpage

1175

Lastpage

1178

Abstract

We developed a twisted micro-channel in order to form a sheath flow in an integrated micro-fluidic chip. The new device has a central straight channel and two parts of 2-dimensional merging channel. It is twisted by 90 degree in between the first part and the second part. We applied the unique material property of polydimetylsiloxane (PDMS), that is elasticity; “easily bent and twisted”. The micro-channel configuration (width, length etc.) were designed to form an isotropic focusing flow. Distribution of particle´s velocity in the section of the micro-channel down the junction points showed sheath flow forming.

Keywords

elasticity; forming processes; microchannel flow; microfabrication; polymers; 2-dimensional merging channel; PDMS; central straight channel; elasticity; integrated microfluidic chip; isotropic focusing flow; microfabrication; particle velocity distribution; polydimetylsiloxane; sheath-flow forming; twisted microchannel; Elasticity; Fabrication; Focusing; Junctions; Mathematical model; Numerical models; Numerical simulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems (MEMS), 2013 IEEE 26th International Conference on

Conference_Location

Taipei

ISSN

1084-6999

Print_ISBN

978-1-4673-5654-1

Type

conf

DOI

10.1109/MEMSYS.2013.6474461

Filename

6474461