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Browse Journals & Magazines > Applied Physics Letters ...> Volume:87 Issue:3 Help

Electro-generation of single femtoliter- and picoliter-volume aqueous droplets in microfluidic systems

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3 Author(s)
He, Mingyan ; Department of Chemistry, University of Washington, Seattle, Washington 98195-1700 ; Kuo, Jason S. ; Chiu, Daniel T.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1997280 

This letter presents a new method to generate individual femtoliter- to picoliter-volume aqueous droplets in oil using single voltage pulses. With high-speed imaging, we characterized the displacement of the water-oil interface as a function of the time and amplitude of the voltage pulse. At high voltages where jetting and droplet formation occurred, we observed the ratio of droplet-to-jet diameter to be ∼1.84, which suggested Rayleigh instability as the primary mechanism responsible for droplet breakup. Droplets with volumes ranging from 14 fl to 8 pl were produced using this method.

Published in:
Applied Physics Letters  (Volume:87 ,  Issue: 3 )

Date of Publication: Jul 2005

Page(s):
031916 - 031916-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.1997280
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Jul 2005

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