| US 7,491,307 B2 | ||
| Portable bioagent concentrator | ||
| H Ben Hsieh, Mountain View, Calif. (US); Meng H. Lean, Santa Clara, Calif. (US); Bryan T. Preas, Palo Alto, Calif. (US); and Armin R. Volkel, Mountain View, Calif. (US) | ||
| Assigned to Palo Alto Research Center Incorporated, Palo Alto, Calif. (US) | ||
| Filed on May 04, 2004, as Appl. No. 10/838,937. | ||
| Prior Publication US 2005/0247565 A1, Nov. 10, 2005 | ||
| Int. Cl. G01N 27/453 (2006.01) | ||
| U.S. Cl. 204—643 [204/600] | 19 Claims |
| 1. A portable apparatus for extracting and concentrating bioagents within a fluid medium, the apparatus comprising:
a container having at least one sample solution inlet port;
at least two traveling wave grids patterned on at least two surfaces of said container, wherein at least one traveling wave
grid causes bioagents to migrate to at least one specified surface within said container to at least one extraction port,
said at least two traveling wave grids comprising:
a substrate;
a collection of closely spaced and parallel electrically conductive electrodes extending across said substrate; and
a collection of buses providing electrical communication with said collection of conductive electrodes; and
at least one voltage controller for providing a multiphase electrical signal to said collection of buses and said collection
of electrodes of said at least two traveling wave grids.
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