Improvement of dynamic characteristics of polydimethylsiloxane based microvalve

Gyu Sik Ra; Sandeep Kumar Jha; Tae Sik Yoon; Hyun Ho Lee; Yong Sang Kim

doi:10.1007/s00542-008-0743-8

Improvement of dynamic characteristics of polydimethylsiloxane based microvalve

Gyu Sik Ra
, Sandeep Kumar Jha
, Tae Sik Yoon
, Hyun Ho Lee
, Yong Sang Kim

Myongji University

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Microfluidics is an indispensable part of micro total analysis system (μ-TAS) and lab-on-a-chip analysis systems. While most of the work in this area has focused on MEMS based actuation with micropumps and microvalves, polymer based Paraffin actuator is an attractive alternative in terms of ease in fabrication and low cost. While we made previous attempts in fabricating polydimethylsiloxane (PDMS) based devices, it suffered a drawback of low flow rates in the microchannel due to adherence of PDMS to the channel substratum. In the current work, we focused on improvement of mechanical properties of the PDMS membrane by altering prepolymer to crosslinker ratio. We found that a ratio of 100:15 produced sufficient tensile strength to the membrane and also enhanced actuation characteristics of microvalve fabricated with it.

Original language	English
Pages (from-to)	607-609
Number of pages	3
Journal	Microsystem Technologies
Volume	15
Issue number	4
DOIs	https://doi.org/10.1007/s00542-008-0743-8
State	Published - Apr 2009
Externally published	Yes

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title = "Improvement of dynamic characteristics of polydimethylsiloxane based microvalve",

abstract = "Microfluidics is an indispensable part of micro total analysis system (μ-TAS) and lab-on-a-chip analysis systems. While most of the work in this area has focused on MEMS based actuation with micropumps and microvalves, polymer based Paraffin actuator is an attractive alternative in terms of ease in fabrication and low cost. While we made previous attempts in fabricating polydimethylsiloxane (PDMS) based devices, it suffered a drawback of low flow rates in the microchannel due to adherence of PDMS to the channel substratum. In the current work, we focused on improvement of mechanical properties of the PDMS membrane by altering prepolymer to crosslinker ratio. We found that a ratio of 100:15 produced sufficient tensile strength to the membrane and also enhanced actuation characteristics of microvalve fabricated with it.",

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AU - Ra, Gyu Sik

AU - Jha, Sandeep Kumar

AU - Yoon, Tae Sik

AU - Lee, Hyun Ho

AU - Kim, Yong Sang

PY - 2009/4

Y1 - 2009/4

N2 - Microfluidics is an indispensable part of micro total analysis system (μ-TAS) and lab-on-a-chip analysis systems. While most of the work in this area has focused on MEMS based actuation with micropumps and microvalves, polymer based Paraffin actuator is an attractive alternative in terms of ease in fabrication and low cost. While we made previous attempts in fabricating polydimethylsiloxane (PDMS) based devices, it suffered a drawback of low flow rates in the microchannel due to adherence of PDMS to the channel substratum. In the current work, we focused on improvement of mechanical properties of the PDMS membrane by altering prepolymer to crosslinker ratio. We found that a ratio of 100:15 produced sufficient tensile strength to the membrane and also enhanced actuation characteristics of microvalve fabricated with it.

AB - Microfluidics is an indispensable part of micro total analysis system (μ-TAS) and lab-on-a-chip analysis systems. While most of the work in this area has focused on MEMS based actuation with micropumps and microvalves, polymer based Paraffin actuator is an attractive alternative in terms of ease in fabrication and low cost. While we made previous attempts in fabricating polydimethylsiloxane (PDMS) based devices, it suffered a drawback of low flow rates in the microchannel due to adherence of PDMS to the channel substratum. In the current work, we focused on improvement of mechanical properties of the PDMS membrane by altering prepolymer to crosslinker ratio. We found that a ratio of 100:15 produced sufficient tensile strength to the membrane and also enhanced actuation characteristics of microvalve fabricated with it.

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DO - 10.1007/s00542-008-0743-8

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JO - Microsystem Technologies

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Improvement of dynamic characteristics of polydimethylsiloxane based microvalve

Abstract

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