Maskless fabrication of a microfluidic device with interdigitated electrodes on PCB using laser ablation

Michael Contreras-Saenz; Christian Hassard; Rafael Vargas-Chacon; Jose Luis Gordillo; Sergio Camacho-Leon

doi:10.1117/12.2222961

21 March 2016 Maskless fabrication of a microfluidic device with interdigitated electrodes on PCB using laser ablation

Michael Contreras-Saenz, Christian Hassard, Rafael Vargas-Chacon, Jose Luis Gordillo, Sergio Camacho-Leon

Author Affiliations +

Proceedings Volume 9705, Microfluidics, BioMEMS, and Medical Microsystems XIV; 97050N (2016) https://doi.org/10.1117/12.2222961
Event: SPIE BiOS, 2016, San Francisco, California, United States

Abstract

This paper reports the maskless fabrication of a microfluidic device with interdigitated electrodes (IDE) based on the technology of MicroElectroMechanical Systems on Printed Circuit Board (PCB-MEMS) and laser ablation. The device has flame retardant (FR)-4 resin as substrate, cooper (Cu) as active material and SU-8 polymer as structural material. By adjusting the laser parameters, Cu IDEs and SU-8 microchannels were successfully patterned onto the FR-4 substrate. The respective width, gap and overlap of the IDEs were 50 μm, 25 μm and 500 μm. The respective width, depth and length of the microchannels were 210 μm, 24.6 μm and 6.3 mm. The resolution and repeatability achieved in this approach, along with the low cost of the involved materials and techniques, enable an affordable micromachining platform with rapid fabrication-test cycle to develop active multiphysic microdevices with several applications in the fields of biosensing, cell culture, drug delivery, transport and sorting of molecules, among others.

Conference Presentation

Citation Download Citation

Michael Contreras-Saenz, Christian Hassard, Rafael Vargas-Chacon, Jose Luis Gordillo, and Sergio Camacho-Leon "Maskless fabrication of a microfluidic device with interdigitated electrodes on PCB using laser ablation", Proc. SPIE 9705, Microfluidics, BioMEMS, and Medical Microsystems XIV, 97050N (21 March 2016); https://doi.org/10.1117/12.2222961

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