| US 7,601,267 B2 | ||
| Method for positioning small particles in a fluid | ||
| Albrecht Haake, Oerlikonerstrasse 38, Zürich CH-8057 (Switzerland); and Jürg Dual, Waldegg 10a, Zumikon CH-8126 (Switzerland) | ||
| Appl. No. 10/548,116 PCT Filed Sep. 25, 2003, PCT No. PCT/EP03/10649 § 371(c)(1), (2), (4) Date Oct. 03, 2005, PCT Pub. No. WO2004/079716, PCT Pub. Date Sep. 16, 2004. |
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| Claims priority of application No. 03005039 (EP), filed on Mar. 06, 2003. | ||
| Prior Publication US 2006/0049114 A1, Mar. 09, 2006 | ||
| Int. Cl. C02F 1/32 (2006.01); G01N 33/00 (2006.01) | ||
| U.S. Cl. 210—748 [73/588; 210/600] | 6 Claims |
| 1. A method for controlled positioning of particles surrounded by a fluid using acoustic forces, which comprises the steps
of:
providing a plate excited to vibrate as a body;
exciting the body with a transducer to produce bending vibrations of the body;
emitting acoustic waves into the fluid by a surface movement of the body; and
reflecting the acoustic waves off of a surface of other bodies for forming a sound field in which the acoustic forces appear;
the providing step providing a triangular plate as the plate excited to bending vibrations; and
the exciting step including exciting the triangular plate with the transducer being a single transducer so that plate waves
are reflected by two edges of the triangular plate.
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