1. 1. MOLDED BIOCOMPATIBLE AND DISPOSABLE PDMS/SU-8 INKJET DISPENSER Anas Bsoul*, Simon Beyer, Ali Ahmadi, Boris Stoeber, Edmond Cretu, Konrad Walus The University of British Columbia, Vancouver, CANADA Speaker: Chung- Wei Huang Advisor: Cheng-Hsien Liu 2015.06.16
2. 2. Outline Introduction Device fabrication Fabrication result Result Conclusions
3. 3. Biocompatible inkjet dispenser Introduction 3D printer Introducing BCN3D Sigma - Independent Dual Extruder 3D Printer The Dolomite Centre Ltd - Micro Droplet Systems Droplet generator
4. 4. Introduction Droplet generator Operation issue: 1. Actuation method 2. Actuation efficiency 3. Satellite droplets 4. Size controllability 5. Contamination http://physics.stackexchange.com/questions/53516/satellite-droplets-in-a-breaking-liquid-jet Satellite droplets P. Ben-Tzvi, W. Rone, 2009 Contact mode Piezoelectric Actuation Epson
5. 5. Device Biocompatible PDMS/SU-8 inkjet dispenser: Low-cost fabrication process Bio-compatible materials Hydrophobic SU-8 micro-nozzles to limit satellite droplet formation The capability of printing hydrogel constructs A limited cross-contamination risk Disposable Integration with other PDMS microfluidic systems
6. 6. Device Fabrication
7. 7. Device Fabrication Polyvinyl alcohol (PVA)
8. 8. Fabrication Result
9. 9. Experimental Setup
10. 10. Results
11. 11. Conclusions Inkjet dispenser Diameters ranging: 80-130 m Rate: 2-1000 droplets/second Printing hydrogel structures and arbitrary patterns Integration with other PDMS microfluidic chips Applications: Multiple materials 3D printing Biochemical analysis Cell-based assays
12. 12. THANK YOU!