Fluorinated silica microchannel surfaces
United States Patent
| 6,865,939 | |
| March 15, 2005 | |
| View the Complete Patent at the US Patent & Trademark Office | |
| Microfluidic Polymer Valves | |
| A method for surface modification of microchannels and capillaries. The method produces a chemically inert surface having a lowered surface free energy and improved frictional properties by attaching a fluorinated alkane group to the surface. The coating is produced by hydrolysis of a silane agent that is functionalized with either alkoxy or chloro ligands and an uncharged C.sub.3 -C.sub.10 fluorinated alkane chain. It has been found that the extent of surface coverage can be controlled by controlling the contact time from a minimum of about 2 minutes to a maximum of 120 minutes for complete surface coverage. | |
| Kirby; Brian J. (San Francisco, CA), Shepodd; Timothy Jon (Livermore, CA) | |
| Sandia Naitonal Laboratories (Livermore, CA) | |
| 10/245,224 | |
| September 16, 2002 | |
| 73/253; | |
| B05D 5/08 (20060101); B05D 3/02 (20060101); G01F 003/08 (); | |
| 428/375,601 96/1 204/157.15,450 427/115 73/253 | |
| STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under contract no. DE-AC04-94AL85000 awarded by the U. S. Department of Energy to Sandia Corporation. The Government has certain rights in the invention. |