Precise temperature control in microfluidic devices using Joule heating of ionic liquids.

de Mello, Andrew J; Habgood, Matthew; Lancaster, N Llewellyn; Welton, Tom; Wootton, Robert C R · Lab Chip · 2004

basic_science · Level V

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Abstract

Microfluidic devices for spatially localised heating of microchannel environments were designed, fabricated and tested. The devices are simple to implement, do not require complex manufacturing steps and enable intra-channel temperature control to within +/-0.2 degrees C. Ionic liquids held in co-running channels are Joule heated with an a.c. current. The nature of the devices means that the internal temperature can be directly assessed in a facile manner.

Medical subject headings