Silicon biochips for dual label-free and fluorescence detection: Application to protein microarray development.

Silicon biochips for dual label-free and fluorescence detection: Application to protein microarray development.
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DOI:
10.1016/j.bios.2011.03.016
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发表时间:
2011-05-15
影响因子:
12.6
通讯作者:
Chiari, Marcella
Chiari, Marcella
中科院分区:
工程技术1区
文献类型:
--
作者:
Cretich, Marina;Reddington, Alex;Monroe, Margo;Bagnati, Marta;Damin, Francesco;Sola, Laura;Unlu, M. Selim;Chiari, Marcella

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A new silicon chip for protein microarray development, fabrication and validation is proposed. The chip is made of two areas with oxide layers of different thicknesses: an area with a 500 nm SiO2 layer dedicated to interferometric label-free detection and quantification of proteins and an area with 100 nm SiO2 providing enhanced fluorescence. The chip allows, within a single experiment performed on the same surface, label-free imaging of arrayed protein probes coupled with high sensitivity fluorescence detection of the molecular interaction counterparts. Such a combined chip is of high practical utility during assay development process to image arrays, check consistency and quality of the protein array, quantify the amount of immobilized probes and finally detect fluorescence of bioassays.
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