Abstract：
:A novel and simple method to fabricate microchannels is reported based on an inkjet printing of a volatile solid mold. A liquid ink -1,6 hexanediol- ejected from a piezoelectric nozzle is instantaneously frozen when touching a cooled substrate. The created mold is then poured with PDMS. Once the PDMS is crosslinked, the ink is sublimated and the device is ready. With this approach it is possible to make microchannels on different nature surfaces such as glass, paper, uncross-linked PDMS layer or non planar substrates. The versatility of this method is illustrated by printing channels directly on commercial electrodes and measuring the channel capacitance. Moreover, millimetric height microfluidic systems are easily produced (aspect ratio [Formula: see text] 25) as well as 3D structures such as bridges. To demonstrate, we have fabricated a combinatorial microfluidic system which makes 6 mixtures from 4 initial solutions without any stacking and tedious alignment procedure.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Brossard R,Brouchet T,Malloggi Fdoi
10.1038/s41598-019-53729-7subject
Has Abstractpub_date
2019-11-25 00:00:00pages
17473issue
1issn
2045-2322pii
10.1038/s41598-019-53729-7journal_volume
9pub_type
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