Photo-switchable microvalve in a reusable Lab-on-a-disc

Author

Glennon, T. ; Saez, J. ; Czugala, M. ; Florea, L. ; Mcnamara, E. ; Fraser, K.J. ; Ducree, J. ; Diamond, D. ; Benito-Lopez, F.

Author_Institution

Insight Centre for Data Analytics, Dublin City Univ., Dublin, Ireland

fYear

2015

fDate

21-25 June 2015

Firstpage

109

Lastpage

112

Abstract

This contribution describes for the first time the fabrication and the performance of a reversible ionogel microvalve in-situ photopolymerised into a reusable disc platform for fluid control. During storage and spinning, the swollen microvalve provides a permanent liquid barrier due to the special chemical characteristics of the ionogel. The microvalve is easy actuated using a white light LED allowing open of the channel at a desired time. The actuation mechanism is chemically reversible when an acid solution is provided to the microvalve. Here a perpendicular microchannel, connected to the valve from behind, is used to ensure the re-swelling of the ionogel and therefore reusability of the Lab-on-a-disc.

Keywords

lab-on-a-chip; light emitting diodes; microchannel flow; microfabrication; microvalves; acid solution; actuation mechanism; fluid control; lab-on-a-disc; permanent liquid barrier; perpendicular microchannel; reusable disc platform; reversible ionogel microvalve; swollen microvalve; white light LED; Fabrication; Light emitting diodes; Liquids; Microfluidics; Microvalves; Polymers; ionic liquid; ionogel; lab-on-a-disc; photoactuation; spiropyran; valve;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS), 2015 Transducers - 2015 18th International Conference on

Conference_Location

Anchorage, AK

Type

conf

DOI

10.1109/TRANSDUCERS.2015.7180873

Filename

7180873