Title :
Conductometric and optical sensing of stimuli senssitive hydrogels inside microfluidic channels
Author :
Guan, T. ; Ceyssens, F. ; Puers, R.
Author_Institution :
Dept. ESAT-MICAS, KULeuven, Leuven, Belgium
Abstract :
In this paper, a MEMS on-chip microfluidic platform was designed, fabricated and characterized. This MEMS device can provide characterization for various stimuli sensitive hydrogels at microscale level, which makes it a useful tool for developing and comparing different hydrogels. The hydrogel swelling behavior can be visually monitored by optical methods, as well as by an embedded conductometric sensing. One sample hydrogel was tested utilizing the proposed MEMS device, showing 200% surface area increase and 35% resistance decrease due to swelling.
Keywords :
hydrogels; microfabrication; microfluidics; microsensors; optical sensors; MEMS on-chip microfluidic platform; conductometric sensing; hydrogel swelling behavior; microfluidic channel; microscale level; optical sensing; stimuli sensitive hydrogel; Electrodes; Microfluidics; Micromechanical devices; Optical sensors; Resistance; Resists; hydrogels; microfluidic; stimuli sensitive;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-0157-3
DOI :
10.1109/TRANSDUCERS.2011.5969414
