Apparatus for collecting particles
First Claim
1. Apparatus for collecting particles from a liquid, comprising a first electrode having an upper surface defining one or more substantially circular areas of a predetermined diameter separated from a counter electrode, having an upper surface bounding at least in part the circular area or areas of the first electrode, by a predetermined gap and means for applying an alternating potential difference of a predetermined magnitude at a predetermined frequency lower than the charge relaxation frequency of the liquid across the electrodes whereby particles from the liquid are focused onto the circular area or areas of the first electrode through an induced electro-osmotic flow in the liquid.
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Abstract
Detail is apparatus for collecting particles from a liquid, including a first electrode having an upper surface defining one or more substantially circular areas of a predetermined diameter separated from a counter electrode, having an uppersurface bounding at least in part the circular area or areas of the first electrode, by a predetermined gap and equipment for applying an alternating potential difference of a predetermined magnitude at a predetermined frequency lower than the charge relaxation frequency of the liquid across the electrodes whereby particles from the liquid are focused onto the circular area or areas of the first elect through an induced electro-osmotic flow in the liquid.
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Citations
16 Claims
- 1. Apparatus for collecting particles from a liquid, comprising a first electrode having an upper surface defining one or more substantially circular areas of a predetermined diameter separated from a counter electrode, having an upper surface bounding at least in part the circular area or areas of the first electrode, by a predetermined gap and means for applying an alternating potential difference of a predetermined magnitude at a predetermined frequency lower than the charge relaxation frequency of the liquid across the electrodes whereby particles from the liquid are focused onto the circular area or areas of the first electrode through an induced electro-osmotic flow in the liquid.
- 13. A method for collecting particles from a liquid, comprising the steps of i) introducing the liquid to a first electrode having an upper surface with one or more substantially circular areas of predetermined diameter separated from a counter electrode having an upper surface bounding at least in part the circular area or areas of the first electrode, by a predetermined gap and ii) applying an alternating potential difference of a predetermined magnitude at a predetermined frequency lower than the charge relaxation frequency of the liquid across the array whereby to induce an electro-osmotic flow in the liquid that focuses the particles from the liquid onto the circular area or areas of the first electrode.
Specification