Cornell University
Library
Cornell UniversityLibrary

eCommons

Help
Log In(current)
  1. Home
  2. National and International Organizations
  3. American Physical Society Division of Fluid Dynamics
  4. Fluid Dynamics Videos
  5. Light Enabled Droplet Manipulations

Light Enabled Droplet Manipulations

File(s)
2009_O-OEW_movie_(MPEG II).mpg (49.72 MB)
Open Optoelectrowetting Droplet Manipulations & Particle Concentration
2009_O-OEW_movie_(MPEG I).mpg (25.37 MB)
Open Optoelectrowetting Droplet Manipulations & Particle Concentration
Permanent Link(s)
https://hdl.handle.net/1813/14100
Collections
Fluid Dynamics Videos
Author
Han-Sheng, Chuang
Aloke, Kumar
Steven, Wereley
Abstract

This fluid dynamics video showcases how optically induced electrowetting can be used to manipulate liquid droplets in open space. A photoconductive layer is added to a conventional electrowetting-on-dielectric (EWOD) structure to generate light enabled virtual electrodes, hence resulting in an eletrowetting action. Coplanar electrodes deployed alternately on a substrate enable open droplet manipulations differentiating from a sandwiched configuration. An integration with an optoelectric method shows dynamic and rapid particle handling by strong micro fluidic vortices in conjunction with other electrokinetic forces inside a droplet. The droplet manipulations are realized with visible illumination and powered at 150 Volts peak to peak with a low frequency (100 Hz-800 Hz). The particle concentration is achieved on the surface of the same chip but illuminated with a near-infrared (1064 nm) light source and biased with a high frequency (24 kHz) AC signal.

Sponsorship
Aloke Kumar would like to thank the DeKarman and Bilsland Dissertation Fellowship. The authors would also like to thank the Micro/Nano Fluidics Fundamentals Focus Center (MF3).
Date Issued
2009-10-16T22:43:10Z
Keywords
Optoelectrowetting
•
Electrowetting
•
Droplet
•
Digital Microfluidics
•
Optoelectric
•
Programmable Lab on a Chip
Type
video/moving image

Site Statistics | Help

About eCommons | Policies | Terms of use | Contact Us

copyright © 2002-2026 Cornell University Library | Privacy | Web Accessibility Assistance