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Title: Nanostructured surfaces for microfluidics and sensing applications.

Abstract

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.

Authors:
 [1];  [2]; ;  [1];  [1]; ; ;  [1];  [1]
  1. (Arizona State University)
  2. (United Technologies Corp.)
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
USDOE
OSTI Identifier:
902205
Report Number(s):
SAND2006-7632
TRN: US200717%%422
DOE Contract Number:
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; LIQUID FLOW; MINIATURIZATION; VISIBLE RADIATION; AZO COMPOUNDS; ISOMERIZATION; SURFACE ENERGY; SURFACE TENSION; ULTRAVIOLET RADIATION; Nanostructure materials.; Systems on a chip.; Nanotechnology.; Microfluidic devices*

Citation Formats

Picraux, Samuel Thomas, Piech, Marcin, Schneider, John F., Vail, Sean, Hayes, Mark A., Garcia, Anthony A., Bell, Nelson Simmons, Gust, D, and Yang, Dongqing. Nanostructured surfaces for microfluidics and sensing applications.. United States: N. p., 2007. Web. doi:10.2172/902205.
Picraux, Samuel Thomas, Piech, Marcin, Schneider, John F., Vail, Sean, Hayes, Mark A., Garcia, Anthony A., Bell, Nelson Simmons, Gust, D, & Yang, Dongqing. Nanostructured surfaces for microfluidics and sensing applications.. United States. doi:10.2172/902205.
Picraux, Samuel Thomas, Piech, Marcin, Schneider, John F., Vail, Sean, Hayes, Mark A., Garcia, Anthony A., Bell, Nelson Simmons, Gust, D, and Yang, Dongqing. Mon . "Nanostructured surfaces for microfluidics and sensing applications.". United States. doi:10.2172/902205. https://www.osti.gov/servlets/purl/902205.
@article{osti_902205,
title = {Nanostructured surfaces for microfluidics and sensing applications.},
author = {Picraux, Samuel Thomas and Piech, Marcin and Schneider, John F. and Vail, Sean and Hayes, Mark A. and Garcia, Anthony A. and Bell, Nelson Simmons and Gust, D and Yang, Dongqing},
abstractNote = {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.},
doi = {10.2172/902205},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Technical Report:

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