Nanostructured surfaces for microfluidics and sensing applications.

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Description

The present work demonstrates the use of light to move liquids on a photoresponsive monolayer, providing a new method for delivering analyses in lab-on-chip environments for microfluidic systems. The light-driven motion of liquids was achieved on photoresponsive azobenzene modified surfaces. The surface energy components of azobenzene modified surfaces were calculated by Van Oss theory. The motion of the liquid was achieved by generation of a surface tension gradient by isomerization of azobenzene monolayers using UV and Visible light, thereby establishing a surface energy heterogeneity on the edge of the droplet. Contact angle measurements of various solvents were used to demonstrate ... continued below

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27 p.

Creation Information

Picraux, Samuel Thomas (Arizona State University); Piech, Marcin (United Technologies Corp.); Schneider, John F.; Vail, Sean (Arizona State University); Hayes, Mark A. (Arizona State University); Garcia, Anthony A. et al. January 1, 2007.

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Description

The present work demonstrates the use of light to move liquids on a photoresponsive monolayer, providing a new method for delivering analyses in lab-on-chip environments for microfluidic systems. The light-driven motion of liquids was achieved on photoresponsive azobenzene modified surfaces. The surface energy components of azobenzene modified surfaces were calculated by Van Oss theory. The motion of the liquid was achieved by generation of a surface tension gradient by isomerization of azobenzene monolayers using UV and Visible light, thereby establishing a surface energy heterogeneity on the edge of the droplet. Contact angle measurements of various solvents were used to demonstrate the requirement for fluid motion.

Physical Description

27 p.

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  • Report No.: SAND2006-7632
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/902205 | External Link
  • Office of Scientific & Technical Information Report Number: 902205
  • Archival Resource Key: ark:/67531/metadc883657

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • January 1, 2007

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

Description Last Updated

  • Nov. 29, 2016, 9:27 p.m.

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Picraux, Samuel Thomas (Arizona State University); Piech, Marcin (United Technologies Corp.); Schneider, John F.; Vail, Sean (Arizona State University); Hayes, Mark A. (Arizona State University); Garcia, Anthony A. et al. Nanostructured surfaces for microfluidics and sensing applications., report, January 1, 2007; United States. (digital.library.unt.edu/ark:/67531/metadc883657/: accessed November 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.