Infrared controlled waxes for liquid handling and storage on a CD-microfluidic platform

Kameel Abi-Samra, Ryan Hanson, Marc Madou, Robert A. Gorkin

Research output: Contribution to journalArticlepeer-review

97 Citations (Scopus)

Abstract

A novel active valving technique, whereby paraffin wax plugs in microchannels on a centrifugal microfluidic platform are actuated using focused infrared (IR) radiation is demonstrated in this report. Microchannels were simultaneously or sequentially opened using a stationary IR source by forming wax plugs with similar or differing melting points. The presented wax plugs offer key advantages over current active valving techniques, including a less involved fabrication procedure, a simpler actuation process, and the ability to multiplex experiment with active valves. In addition, a new technique for automated liquid reagent storage and release on the microfluidic disc platform, based on the formation and removal of a wax layer, is demonstrated. Overall, the techniques presented in this report offer novel methods for liquid handling, separation, and storage on the centrifugal microfluidic disc platform.
Original languageEnglish
Pages (from-to)723-726
Number of pages4
JournalLab on a Chip
Volume11
Issue number4
DOIs
Publication statusPublished - 2011

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