A Novel Fabrication of PDMS Chip using Atmospheric Pressure Plasma Jet: Hydrophobicity Modification and Feasibility Test

Ya Shen Yu, Lih Hwa Kuo, Mu Chien Wu, Jong-Shinn Wu, Chia-Hung Tsai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

This paper presents a new application of atmospheric pressure plasma jet (APPJ) aiming for fabricating a microfluidic system on a polydimethylsiloxane (PDMS) surface. While PDMS is widely used for microfluidic chips, the fabrication of a chip requires different instruments which are not easily accessible for small-scale companies or laboratories. Therefore, we are motivated to develop a simple and low-cost method for such a fluidic system fabrication. The idea of this work is to directly pattern a fluidic channel on a PDMS surface with a plasma jet, which is known for its capability of modifying the hydrophobicity on a surface. The feasibility test first showed that fluid only flows in plasma-treated regions as having physical walls. The plasma parameters were then optimized using Taguchi method based on experiments. The optimization significantly reduce the required plasma treating time from more than 30 treating rounds to only 3 treating rounds, over ten times improved. Methods for further improving the resolution to micrometer-scale have been discussed. In addition to the advantages of fast and low-cost of the proposed method, making microfluidic channels on the surfaces of PDMS chip is also convenient for recollecting cultured cells on a chip in the field of regenerative medicine.

Original languageEnglish
Title of host publication2018 IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages278-283
Number of pages6
ISBN (Electronic)9781538680940
DOIs
StatePublished - 27 Dec 2018
Event2018 IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS 2018 - Madrid, Spain
Duration: 1 Oct 20185 Oct 2018

Publication series

NameIEEE International Conference on Intelligent Robots and Systems
ISSN (Print)2153-0858
ISSN (Electronic)2153-0866

Conference

Conference2018 IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS 2018
CountrySpain
CityMadrid
Period1/10/185/10/18

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