Microscale fluid transport using optically controlled marangoni effect
Abstract
Low energy light illumination and either a doped semiconductor surface or a surface-plasmon supporting surface are used in combination for manipulating a fluid on the surface in the absence of any applied electric fields or flow channels. Precise control of fluid flow is achieved by applying focused or tightly collimated low energy light to the surface-fluid interface. In the first embodiment, with an appropriate dopant level in the semiconductor substrate, optically excited charge carriers are made to move to the surface when illuminated. In a second embodiment, with a thin-film noble metal surface on a dispersive substrate, optically excited surface plasmons are created for fluid manipulation. This electrode-less optical control of the Marangoni effect provides re-configurable manipulations of fluid flow, thereby paving the way for reprogrammable microfluidic devices.
- Inventors:
-
- Knoxville, TN
- Oak Ridge, TN
- Issue Date:
- Research Org.:
- UT-Battelle LLC/ORNL, Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1018324
- Patent Number(s):
- 7939811
- Application Number:
- 11/778,162
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01L - CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 77 NANOSCIENCE AND NANOTECHNOLOGY
Citation Formats
Thundat, Thomas G, Passian, Ali, and Farahi, Rubye H. Microscale fluid transport using optically controlled marangoni effect. United States: N. p., 2011.
Web.
Thundat, Thomas G, Passian, Ali, & Farahi, Rubye H. Microscale fluid transport using optically controlled marangoni effect. United States.
Thundat, Thomas G, Passian, Ali, and Farahi, Rubye H. Tue .
"Microscale fluid transport using optically controlled marangoni effect". United States. https://www.osti.gov/servlets/purl/1018324.
@article{osti_1018324,
title = {Microscale fluid transport using optically controlled marangoni effect},
author = {Thundat, Thomas G and Passian, Ali and Farahi, Rubye H},
abstractNote = {Low energy light illumination and either a doped semiconductor surface or a surface-plasmon supporting surface are used in combination for manipulating a fluid on the surface in the absence of any applied electric fields or flow channels. Precise control of fluid flow is achieved by applying focused or tightly collimated low energy light to the surface-fluid interface. In the first embodiment, with an appropriate dopant level in the semiconductor substrate, optically excited charge carriers are made to move to the surface when illuminated. In a second embodiment, with a thin-film noble metal surface on a dispersive substrate, optically excited surface plasmons are created for fluid manipulation. This electrode-less optical control of the Marangoni effect provides re-configurable manipulations of fluid flow, thereby paving the way for reprogrammable microfluidic devices.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 10 00:00:00 EDT 2011},
month = {Tue May 10 00:00:00 EDT 2011}
}
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