7.5.2 PDA-based Multifunctional Microfluidic Sensor System
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- 7.5 Chemical Sensors using Optical Technologies
- Author(s)
- R. Potyrailo, A. Leach, W. Morris - GE Global Research (USA)
- Pages
- 649 - 651
- DOI
- 10.5162/IMCS2012/7.5.2
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
We demonstrate a personal data assistant (PDA)-based analytical platform that provides detection, fluid manipulation, computing, and communication capabilities for multi-functional chemical analysis. This multifunctionality is provided by integrating the PDA with a microfluidic system, solid sensing films, and a micro-pump operated by PDA. The applicability of our approach for chemical detection in water and air was illustrated using a built integrated circuit board with eight surface mounted light source-detector opto-pairs with peak emission at 560 and 630 nm for detection of absorbance, scatter, or luminescence from a sample or a sensing film. For chemical detection in gases, disposable sensing films were attached to the opto-pairs array though a light scattering layer. For chemical detection in liquids, a polydimethylsiloxane microfluidic channel network was built. The fluidic network consisted of sample reservoirs connected via 200 µm wide, 100 µm tall channels to a common mixing point. The system was capable of operating a sampling micro-pump for 10 h.