| Title | Sodium hydroxide treatment of PDMS based microfluidic devices |
| Publication Type | Journal Article |
| Year of Publication | 2010 |
| Authors | Hoek, I., Tho F., and Arnold W.M. |
| Journal | Lab on a Chip - Miniaturisation for Chemistry and Biology |
| Volume | 10 |
| Issue | 17 |
| Pagination | 2283 - 2285 |
| Date Published | 2010 |
| ISSN | 14730197 (ISSN) |
| Keywords | article, dimeticone, flow rate, lab on a chip, microfluidics, oncotic pressure, priority journal, sodium hydroxide, water flow |
| Abstract | We discuss the use of aqueous NaOH as a facile surface treatment method to control the electroosmotic flow in PDMS microchannels. Flushing of PDMS/PDMS and glass/PDMS microchannels with 1 M NaOH for 24 h leads to a doubling of the electroosmotic flow. This high flow rate is comparable to the flow rates achieved by treating PDMS microchannels with O 2 plasma. Contact angle measurements and ATR-FTIR analysis show that the surface chemistry of the NaOH treated PDMS differs from O 2 plasma treated PDMS. An important advantage of the NaOH treated surfaces is the enhanced stability, irrespective of whether the devices are stored in air or water. © 2010 The Royal Society of Chemistry. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-77955525472&partnerID=40&md5=a8e40c595a7ccf4280370a7037301757 |
| DOI | 10.1039/c004769d |
