Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Effect of Caged Fluorescent Dye on the Electroosmotic Mobility in Microchannels

Published

Author(s)

David J. Ross, Laurie E. Locascio

Abstract

We report on measurements of electroosmotic mobility in polymer microchannels and silica capillaries with and without the addition of a caged fluorescein dye to the buffer. For PMMA microchannels, the mobility was found to increase from (2.6 0.1) 10-4 cm2/V/s to (4.6 0.1) 10-4 cm2/V/s upon addition of 1.2 mmol/L of caged dye. For PC microchannels, the mobility increased from (4.3 0.2) 10-4 cm2/V/s to (5.4 0.1) 10-4 cm2/V/s upon addition of caged dye. For PDMS microchannels, the mobility increased from (4.3 0.2) 10-4 cm2/V/s to (6.4 0.5) 10-4 cm2/V/s upon addition of caged dye. For fused silica capillaries, the mobility ((5.5 0.2) 10-4 cm2/V/s) was unaffected by the addition of the caged dye.
Citation
Analytical Chemistry
Volume
75
Issue
No. 5

Keywords

electroosmosis, microfluidics

Citation

Ross, D. and Locascio, L. (2003), Effect of Caged Fluorescent Dye on the Electroosmotic Mobility in Microchannels, Analytical Chemistry (Accessed December 7, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created March 1, 2003, Updated February 17, 2017