Abstract
In this work the problem of separating small particles of di↵erent sizes is solved by developing a simple microfluidic device using pinched flow fractionation (PFF), a technique originally presented by Yamada et al. in 2004 [1]. The present work takes the concept of PFF to the next level by making the device tunable using a simple pressure control. Through analytical calculations and FEM simulations in COMSOL, the required dimensions and operating pressures of the device was determined. The device was subsequently fabricated by injection molding of a COC TOPAS grade 5013 polymer (TOPAS Advanced Polymers GmbH) using a micro machined silicon master. The functionality of the device was confirmed using polymer beads, and by adjusting the pressure accordingly a complete separation of 2 μm and 4.5 μm beads was demonstrated.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of NSTI-Nanotech 2012 |
| Volume | 2 |
| Publication date | 2012 |
| Pages | 470-473 |
| ISBN (Electronic) | 978-1-4665-6275-2 |
| Publication status | Published - 2012 |
| Event | Nanotech 2012: Conference & Expo - Santa Clara Convention Center, Santa Clara, United States Duration: 18 Jun 2012 → 21 Jun 2012 Conference number: 15 |
Conference
| Conference | Nanotech 2012 |
|---|---|
| Number | 15 |
| Location | Santa Clara Convention Center |
| Country/Territory | United States |
| City | Santa Clara |
| Period | 18/06/2012 → 21/06/2012 |
Keywords
- Pinched flow fractionation
- Pressure control
- Modified liga process
- Injection molding
- Cleanroom processing
- Microfluidics
- Point-of-care