Lab-on-a-Chip Microdevice with Contactless Conductivity Detector

Karolina Blaszczyk, Michal Chudy, Zbigniew Brzozka, Artur Dybko
2013 Metrology and Measurement Systems  
This paper describes a new contactless conductivity detector, whose electrodes are constructed of microchannels filled with solution of KCl - called pseudoelectrodes. The lab-on-a-chip microdevice was fabricated in poly(dimethylsiloxane) PDMS, using a moulding technique. The mould was made from a dry negative photoresist with a thickness of 50 μm. During the tests, the dimension! and arrangement of pseudoelectrodes' microchannels were evaluated. The analyte was pumped into the microchannel
more » ... e microchannel using a syringe pump with a flow rate of 50 μL/min. Reproducible!changes of the signal were obtained.
doi:10.2478/mms-2013-0026 fatcat:3clxwnwwujditf3hgkewa26uha