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  A fluorescence based method for the quantification of surface functional groups in closed micro- and nanofluidic channels.

Wang, Y., Lowe, R. D., Mejia, Y. X., Feindt, H., Steltenkamp, S., & Burg, T. P. (2013). A fluorescence based method for the quantification of surface functional groups in closed micro- and nanofluidic channels. Biomicrofluidics, 7(2): 026503. doi:10.1063/1.4802270.

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Wang, Y.1, Author           
Lowe, R. D.1, Author           
Mejia, Y. X.1, Author           
Feindt, H., Author
Steltenkamp, S., Author
Burg, T. P.1, Author           
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1Research Group of Biological Micro- and Nanotechnology, MPI for Biophysical Chemistry, Max Planck Society, ou_578602              

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 Abstract: Surface analysis is critical for the validation of microfluidic surface modifications for biology, chemistry, and physics applications. However, until now quantitative analytical methods have mostly been focused on open surfaces. Here, we present a new fluorescence imaging method to directly measure the surface coverage of functional groups inside assembled microchannels over a wide dynamic range. A key advance of our work is the elimination of self-quenching to obtain a linear signal even with a high density of functional groups. This method is applied to image the density and monitor the stability of vapor deposited silane layers in bonded silicon/glass micro- and nanochannels.

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Language(s): eng - English
 Dates: 2013-04-22
 Publication Status: Published online
 Pages: 11
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1063/1.4802270
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Title: Biomicrofluidics
Source Genre: Journal
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Pages: - Volume / Issue: 7 (2) Sequence Number: 026503 Start / End Page: - Identifier: -