Related Experiment Video
Updated: Jun 27, 2026
08:43
Pneumatically Driven Microfluidic Platform for Micro-Particle Concentration
Published on: February 1, 2022
Microvortex for focusing, guiding and sorting of particles.
Chia-Hsien Hsu1, Dino Di Carlo, Chihchen Chen
1BioMEMS Resource Center, Center for Engineering in Medicine and Surgical Services, Massachusetts General Hospital, Shriners Hospital for Children, and Harvard Medical School, Boston, MA02114, USA.
Lab on a Chip
|November 22, 2008
Summary
A novel microvortex manipulator (MVM) passively sorts particles in microfluidics using helical flows. This scalable system effectively separates beads and cells based on density, showing potential for advanced microfluidic applications.
Area of Science:
- Microfluidics
- Biotechnology
- Particle Manipulation
Background:
- Microfluidic devices enable precise control over small volumes.
- Passive manipulation systems offer advantages in simplicity and scalability.
- Topographically patterned surfaces can induce complex fluid dynamics.
Purpose of the Study:
- To introduce and characterize a microvortex manipulator (MVM) for passive particle manipulation.
- To demonstrate the MVM's capability for focusing and guiding particles and cells.
- To explore the density-selective separation capabilities of the MVM.
Main Methods:
- Utilizing topographically patterned microchannel surfaces to generate helical flows.
- Leveraging a combination of helical flow, buoyant, and gravitational forces for particle movement.
- Analyzing the passive focusing and guiding of beads and cells within microfluidic streams.
Main Results:
- The MVM successfully focuses particles and cells into parallel streams.
- The system demonstrates effective guiding of particles and cells.
- Density-selective sorting of bead populations with a density difference as low as 0.1 g cm(-3) was achieved.
Conclusions:
- The microvortex manipulator (MVM) is a passive, scalable system for microfluidic particle manipulation.
- MVM offers unique capabilities for particle focusing, guiding, and density-based separation.
- This technology holds significant potential for applications in cell sorting and particulate sample analysis.
