Related Experiment Video
Updated: Aug 7, 2026
08:17
An Additive Manufacturing Technique for the Facile and Rapid Fabrication of Hydrogel-based Micromachines with Magnetically Responsive Components
Published on: July 18, 2018
Microscale Marangoni actuation: all-optical and all-electrical methods
R H Farahi1, A Passian, S Zahrai
1Oak Ridge National Laboratory, Bethel Valley Rd., Bldg. 4500 S, MS 6123, TN 37831, USA.
Ultramicroscopy
|June 13, 2006
Summary
This study demonstrates a novel microfluidic platform using thermal gradients to control fluid flow via Marangoni forces. The research highlights potential for integrated fluid actuation and sensing applications.
Area of Science:
- Microfluidics
- Surface Science
- Nanotechnology
Background:
- Microfluidic systems are crucial for lab-on-a-chip devices.
- Controlling fluid flow is essential for microfluidic applications.
- Surface tension gradients are a known method for fluid manipulation.
Purpose of the Study:
- To investigate microfluidic convective flow systems using thermal gradients.
- To explore the use of surface plasmons and resistive thermal elements for fluid actuation.
- To demonstrate the potential for simultaneous fluid actuation and sensing in microfluidics.
Main Methods:
- Experimental study of silicone oil, glycerol, and 1,3,5-trinitrotoluene.
- Generation of surface tension gradients via localized thermal variations.
- Utilizing surface plasmon excitation and resistive thermal elements for thermal control.
Main Results:
- Demonstrated localized thermal variation using surface plasmons and resistive thermal elements.
- Successfully manipulated microfluidic convective flow using Marangoni forces.
- Showcased the integration of plasmonics into microfluidics for fluid control.
Conclusions:
- The developed platform enables precise control of microfluidic flows.
- Surface plasmon excitation offers a novel approach for microfluidic actuation and sensing.
- This research paves the way for advanced microfluidic sensing devices.
