Abstract
We report a novel micro magnetic gyromixer designed for accelerating mixing hence reactions in droplets. The gyromixer is fabricated with magnetite-PDMS composite using soft lithography. The mixer spins and balances itself on the droplet surface through the gyroscopic effect, rapidly homogenizing the enclosed reagents by stretching and folding internal fluid streamlines to enhance mixing. We examined the capability of the gyromixer for improving biochemical reactions in droplets by monitoring the biotin-streptavidin binding as a linker in a quantum dot fluorescence resonant energy transfer sensing system. The remotely controlled gyromixer exhibits high flexibility and potential for integration in a variety of droplet-based miniaturized total analysis systems to reduce turnaround times.
Original language | English (US) |
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Pages (from-to) | 787-794 |
Number of pages | 8 |
Journal | Microfluidics and Nanofluidics |
Volume | 12 |
Issue number | 5 |
DOIs | |
State | Published - Mar 2012 |
Keywords
- Droplet
- Gyromixer
- MEMS
- Magnetic
- Microfluidics
- Quantum dot
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Materials Chemistry