A self-driven microfluidic chip through a rapid surface modification of PDMS and its application for digital loop-mediated amplification (LAMP)

Yu Dong Ma, Wen Hsin Chang, Chih Hung Wang, Shih Yuan Liu, Wen Hsiang Yen, Kang Luo, Huey Ling You, Jiunn Jong Wu, Mel S. Lee, Gwo Bin Lee*

*Corresponding author for this work

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

2 Scopus citations

Abstract

Digital loop-mediated amplification (LAMP) is an isothermal, quantitative DNA amplification approach which has high sensitivity and specificity and could be used to analyze extremely low amount of DNA within a short period of time. In this study, an integrated self-driven microfluidic chip was proposed herein for performing a digital LAMP process for vancomycin-resistant Enterococcus (VRE) diagnosis. The entire bacterial diagnosis could be automatically performed by capillary forces through the new polydimethylsiloxane (PDMS) surface treatment without using external pumps. Moreover, digitized droplets could be separated from each other by normally-close valves such that it could be quantitated. The contact angle of the treated PDMS surface was measured to be only 24°, which was the lowest value in literatures. This is the first time that a rapid (within 1 hour), simple, and hydrophilic PDMS surface modification method has been reported, which could be used in self-driven microfluidic devices for digital LAMP. This device may become a promising tool for clinical diagnosis and point-of-care applications.

Original languageEnglish
Title of host publication2016 IEEE 11th Annual International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-4
Number of pages4
ISBN (Electronic)9781509019472
DOIs
StatePublished - 28 11 2016
Externally publishedYes
Event11th IEEE Annual International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2016 - Sendai, Japan
Duration: 17 04 201620 04 2016

Publication series

Name2016 IEEE 11th Annual International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2016

Conference

Conference11th IEEE Annual International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2016
Country/TerritoryJapan
CitySendai
Period17/04/1620/04/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

  • PDMS modification
  • VRE
  • digital LAMP
  • microfluidics

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