Polybetaine modification of PDMS microfluidic devices to resist thrombus formation in whole bloodElectronic supplementary information (ESI) available. See DOI: 10.1039/c3lc50302j

Assembled polydimethylsiloxane microfluidic devices were modified with a sulfobetaine polymer through continuous "tip-to-tip" modification, significantly reducing blood clotting and extending device patency under blood flow. This technology can be designed to enable the development of devices that can continuously work in whole blood, especially in an extracorporeal or in vivo environment. Assembled polydimethylsiloxane microfluidic devices were modified with a sulfobetaine polymer through continuous "tip-to-tip" modification, significantly reducing blood clotting and extending device patency under blood flow.