P1.9.5 UV-Curable Adhesive as the Low-Cost Material of Choice for Microfluidic Forensic Applications
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- P1.9 Technology and Application
- P. Wägli, A. Homsy, P. van der Wal, N. de Rooij - Ecole Polytechnique Fédérale de Lausanne, IMT SAMLAB (Switzerland), C. Berchtold - ETH Zurich, D-CHAB LOC (Switzerland)
- 1166 - 1168
There is a push towards disposable, polymer-based microfluidic devices for medical and forensic applications to reduce cost and cross contamination between different samples. Therefore, more and more polymer-based systems are developed and they replace the common systems made of silicon or glass. But one of the main challenges of systems made of polymers is the adsorption/absorption of molecules. For microfluidic-based chemical sensors, it is essential that the analyte is not adsorbed on the walls of the microfluidic channels before detection. Here we present a study of the adsorption of cocaine molecules by low-cost polymer microfluidic devices. We manufactured the systems by a simple and low-cost rapid-prototyping method using a UV-curable adhesive. Remarkable low adsorption values (up to 100% recovery rate) were found by liquid chromatography - mass spectroscopy (LC-MS) measurements for this potential polymer for forensic applications.