Journal
SENSORS
Volume 18, Issue 1, Pages -Publisher
MDPI AG
DOI: 10.3390/s18010083
Keywords
autofluorescence; glass imprinting process; vitreous carbon mold; glass microchannel; droplet based microfluidic
Funding
- National Research Foundation of Korea (NRF) - Korean Government (MSIP) [2015R1A5A1037668]
- National Research Foundation of Korea [2015R1A5A1037668] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This study reports a cost-effective method of replicating glass microfluidic chips using a vitreous carbon (VC) stamp. A glass replica with the required microfluidic microstructures was synthesized without etching. The replication method uses a VC stamp fabricated by combining thermal replication using a furan-based, thermally-curable polymer with carbonization. To test the feasibility of this method, a flow focusing droplet generator with flow-focusing and channel widths of 50 mu m and 100 mu m, respectively, was successfully fabricated in a soda-lime glass substrate. Deviation between the geometries of the initial shape and the vitreous carbon mold occurred because of shrinkage during the carbonization process, however this effect could be predicted and compensated for. Finally, the monodispersity of the droplets generated by the fabricated microfluidic device was evaluated.
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