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A suction-type, pneumatic microfluidic device for rapid DNA extraction

  • Sung-Yi Yang
  • , Chen-Hsun Weng
  • , Gwo-Bin Lee*
  • *Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

This current study presents a new miniature, integrated system capable of rapid extraction of genomic DNA (gDNA) from saliva samples. Three major components of the DNA extraction chip, including six symmetrical, normally-closed microvalves, a sample transport/mixing unit and a waste unit are integrated in this device. The microfluidic DNA extraction chip was made of CNC machining and PDMS casting processes to integrate a liquid channel layer, an air chamber layer and a glass layer on a single chip. Liquid samples can be transported and mixed by the suction-type sample transport/mixing unit by using micropumps, micromixers and normally-closed microvalves. Experimental results showed the pumping rate can be as high as 400 μL/min at an applied pressure of -70 KPa for an air chamber with a depth of 1.5 mm. A mixing efficiency as high as 96.5% can be achieved within 3 sec. Experimental data also showed that gDNA with an average concentration of 45 ± 3 ng/L and an optical intensity (OD) value (260/280) of 1.5 ± 0.2 from ten measurements can be successfully achieved within 25 minutes. Consequently, the proposed miniature system can provide a powerful platform for automatic, rapid DNA extraction. © 2011 IEEE.
Original languageEnglish
Title of host publicationNEMS 2011 - 6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems
Pages71-74
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2011 - Kaohsiung, Taiwan, China
Duration: 20 Feb 2011 → 23 Feb 2011

Publication series

NameNEMS 2011 - 6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems

Conference

Conference6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2011
PlaceTaiwan, China
CityKaohsiung
Period20/02/11 → 23/02/11

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 9 - Industry, Innovation, and Infrastructure
    SDG 9 Industry, Innovation, and Infrastructure

Research Keywords

  • CNC machining
  • DNA extraction
  • genomic DNA
  • MEMS
  • microfluidics
  • micromixer
  • micropump

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