A portable device for temperature control along microchannels

Daniele Vigolo, Roberto Rusconi, Roberto Piazza, Howard A Stone

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


For many physical, chemical and biological measurements, temperature is a crucial parameter to control. In particular, the recent development of microreactors and chip-based technologies requires integrated thermostatic systems. However, the requirements of disposability and visual inspection of a device under a microscope cannot accommodate equipment such as external heaters. By exploiting a silver-filled epoxy that can be injected and solidified in a microfluidic chip, we demonstrate a simple and inexpensive design of a conductive path, which allows heating by the Joule effect of both sides of a microchannel. In addition to permitting the maintenance of a constant temperature along the channel walls, our method can control the temperature gradient across the channel, thus enabling non-equilibrium studies in a microfluidic geometry.

Original languageEnglish
Pages (from-to)795-8
Number of pages4
JournalLab on a Chip
Issue number6
Publication statusPublished - 21 Mar 2010


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