| US 7,572,357 B2 | ||
| Chiral temperature gradient focusing | ||
| David J. Ross, Silver Spring, Md. (US); Wyatt N. Vreeland, Washington, D.C. (US); and Karin M. Balss, Basking Ridge, N.J. (US) | ||
| Assigned to The United States of America as represented by the Secretary of Commerce, the National Institute of Standards and Technology, Washington, D.C. (US) | ||
| Filed on Jan. 24, 2005, as Appl. No. 11/39,955. | ||
| Application 11/039955 is a continuation in part of application No. 10/197331, filed on Jul. 18, 2002, granted, now 7,029,561. | ||
| Claims priority of provisional application 60/307691, filed on Jul. 25, 2001. | ||
| Claims priority of provisional application 60/323404, filed on Sep. 19, 2001. | ||
| Claims priority of provisional application 60/544126, filed on Feb. 12, 2004. | ||
| Prior Publication US 2005/0258040 A1, Nov. 24, 2005 | ||
| Int. Cl. G01N 27/447 (2006.01) | ||
| U.S. Cl. 204—452 [204/450; 204/451] | 29 Claims |
| 1. A method for directing one or more materials in a fluid, said method comprising the steps of:
applying an electric field to a fluid thereby causing one or more materials to move electrophoretically;
establishing a temperature gradient in said fluid thereby generating a gradient of the electrophoretic velocity of said one
or more materials;
producing a flow of said fluid thereby changing the total velocity of said one or more materials; and
adding an additive to said fluid thereby modifying the normal electrophoretic velocity of said one or more materials based
on an interaction of said one or more materials with said additive.
|