US 8,465,967 B2Granted

Nanoparticle electrostatic trap

AssigneeUWM Research Foundation, Inc.

InventorsJorg C. Woehl, Christine A. Carlson

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Abstract

A method of trapping a charged particle. The method includes providing a planar substrate having a conductive surface thereon, the conductive surface having at least one non-conductive region. The method also includes applying a solution to the conductive surface, the solution comprising at least one charged particle. The method further includes applying a voltage of a threshold level to the conductive surface. The method also includes, in response to the voltage, generating an electrostatic field in the solution adjacent to a boundary between the conductive surface and the non-conductive region. The method also includes setting the threshold level of voltage to result in a strength of the electrostatic field sufficient to prevent the particle from crossing the electrostatic field.

Claims10

Dependent claims

A method of trapping a charged particle, comprising:

providing a planar substrate having a conductive surface thereon, the conductive surface having at least one non-conductive region;
applying a solution to the conductive surface, the solution comprising at least one charged particle;
electrically connecting one pole of a power source to the conductive surface, wherein the opposite pole of the power source is not connected to the conductive surface or to the solution;
charging the conductive surface by applying a voltage of a threshold level to the conductive surface using the power source;
in response to the voltage, generating an electrostatic field in the solution adjacent to a boundary between the conductive surface and the non-conductive region;
and
setting the threshold level of voltage to result in a strength of the electrostatic field sufficient to prevent the particle from crossing the electrostatic field wherein the voltage applied to the conductive surface has the same polarity as the at least one charged particle.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/011,413Filed 21 Jan 2011 · us provisional application
Priority: 22 Jan 2010
Published: US 2011/0180701 A128 Jul 2011
Granted: 18 Jun 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B82B 3/0076
Methods for manipulating nanostructures: methods for manipulating nanostructures not provided for in groups B82B3/0066 - B82B3/0071
B03C 5/00
Separating dispersed particles from liquids by electrostatic effect
B03C 2201/26
Details of magnetic or electrostatic separation: for use in medical or biological applications
B82B
Nanostructures formed by manipulation of individual atoms, molecules, or limited collections of

Family

Application61/336,449Us provisional application · filed 22 Jan 2010
US 2011/0180701 A1Pre-grant publication · published 28 Jul 2011
US 8,465,967 B2This patent

From the US filing history. Foreign family members aren’t listed.

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