Rapid and simple half-quantitative measurement alpha-fetoprotein by poly(dimethylsiloxane) microfluidic chip immunochromatographic assay

Chao Tong; Qinghui Jin; Jianlong Zhao

doi:10.1117/12.756625

4 January 2008 Rapid and simple half-quantitative measurement alpha-fetoprotein by poly(dimethylsiloxane) microfluidic chip immunochromatographic assay

Chao Tong, Qinghui Jin, Jianlong Zhao

Author Affiliations +

Proceedings Volume 6836, MEMS/MOEMS Technologies and Applications III; 68360B (2008) https://doi.org/10.1117/12.756625
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

In this article, a kind of microfluidic method based on MEMS technology combined with gold immunochromatographic assay (GICA) is developed and discussed. Compared to the traditional GICA, this method supplies us convenient, multi-channel, in-parallel, low cost and similar efficiency approach in the fields of alpha-fetopro-tei (AFP)detection. Firstly, we improved the adhesion between the model material SU-8 and Silicon wafer, optimized approaches of the fabrication of the SU-8 model systematically, and fabricate the PDMS micro fluid chip with good reproduction successfully. Secondly, Surface modification and antibody immobilization methods with the GICA on the PDMS micro fluid analysis chip are studied, we choose the PDMS material and transfer GICA to the PDMS micro fluid chip successfully after researching the antibody immobilization efficiency of different materials utilized in fabrication of the micro fluid chip. In order to improve the reaction efficiency of the immobilized antibody, we studied the characteristics of micro fluid without the gas drive, and the fluid velocity control in our design; we also design structure of grove to strengthen the ability of immobilizing the antibody. The stimulation of the structure shows that it achieves great improvement and experiments prove the design is feasible.

Citation Download Citation

Chao Tong, Qinghui Jin, and Jianlong Zhao "Rapid and simple half-quantitative measurement alpha-fetoprotein by poly(dimethylsiloxane) microfluidic chip immunochromatographic assay", Proc. SPIE 6836, MEMS/MOEMS Technologies and Applications III, 68360B (4 January 2008); https://doi.org/10.1117/12.756625

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