Note: Making tens of centimeter long uniform microfluidic channels using commercial glass pipette

Neil Ou, Huang Ming Lee, Jong Ching Wu

Research output: Contribution to journalArticle


Producing microchannels with diameters between 10 and 20 μm and with lengths in the tens of centimeters is reported. The method can be modified to obtain diameters as narrow as 350 nm. Length-to-diameter aspect ratios that surpass 104 can be produced for a fraction of current production costs. The controllable channel is produced by applying a flame to the narrow end of a commercial pipette that is made from a soda-lime silicate. In combination with a pulling mechanism, applying heat to the composite material lengthens the pipette in a highly uniform way. Given that the materials and methods in this research are cost-effective when compared to femtosecond laser micromachining on 2D silicon-based surfaces, further research into producing microchannels from soda-lime silicates may revolutionize access to 3D controllable microchannels.

Original languageEnglish
Article number036101
JournalReview of Scientific Instruments
Issue number3
Publication statusPublished - 2018 Mar 1


All Science Journal Classification (ASJC) codes

  • Instrumentation

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