Dynamic Formation of Ring-shaped Patterns of Colloidal Particles in Microfluidic Systems
This letter reports the formation of patterns of micrometer-sized beads within the steady-state recirculation flow of a microvortex generated in a microfluidic system. The mechanism by which these patterns form relies on a delicate balance between the centrifugal and displacement forces experienced by the recirculating particles with a lift force exerted on the particles near the solid boundary of the microcavity. Our observation was made possible by the small dimensions of the microchannels we used and by the presence of steep velocity gradients unique to microfluidic devices.
- Research Organization:
- Pacific Northwest National Lab., Richland, WA (US), Environmental Molecular Sciences Laboratory (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 15011139
- Journal Information:
- Applied Physics Letters, Vol. 83, Issue 6; Other Information: PBD: 11 Aug 2003; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Blood Plasma Self-Separation Technologies during the Self-Driven Flow in Microfluidic Platforms
Improved Bacterial and Viral Recoveries from 'Complex' Samples using Electrophoretically Assisted Acoustic Focusing
Modeling and simulation of DNA flow in a microfluidic-based pathogen detection system
Journal Article
·
Sat Jul 03 00:00:00 EDT 2021
· Bioengineering
·
OSTI ID:15011139
+2 more
Improved Bacterial and Viral Recoveries from 'Complex' Samples using Electrophoretically Assisted Acoustic Focusing
Conference
·
Thu Mar 27 00:00:00 EDT 2008
·
OSTI ID:15011139
+1 more
Modeling and simulation of DNA flow in a microfluidic-based pathogen detection system
Conference
·
Mon Jan 31 00:00:00 EST 2005
·
OSTI ID:15011139