Method and apparatus for cleaning and surface conditioning objects using plasma
A method and apparatus for cleaning and surface conditioning objects using plasma are disclosed. One embodiment of the method discloses providing a plurality of elongated dielectric barrier members arranged adjacent each other, the elongated dielectric barrier members having electrodes coupled therein, providing a ground plane, introducing the objects proximate the elongated dielectric barrier members and the ground plane, and producing a dielectric barrier discharge to form plasma between the ground plane and the elongated dielectric barrier members for cleaning the objects. One embodiment of the apparatus for cleaning objects using plasma discloses a plurality of elongated dielectric barrier members arranged adjacent each other, a plurality of electrodes, each contained within, and extending substantially along the length of, respective ones of the elongated dielectric barrier members, and a ground plane proximate the plurality of elongated dielectric barrier members.
1. An apparatus for cleaning objects using plasma, comprising:
a microplate provided with
a plurality of elongated dielectric barrier members arranged adjacent each other defining a gap therebetween;
a plurality of electrodes, each contained within, and extending substantially along the length of, respective ones of the elongated dielectric barrier members; and
a ground member proximate the plurality of elongated dielectric barrier members;
wherein said ground member defines at least one gap aligned with the gap between each adjacent elongated dielectric barrier member suitable for receiving at least a portion of the objects to be cleaned.
2. The apparatus of claim 1 , wherein the objects comprise a plurality of probes, the probes being arranged and configured to be introduced proximate the elongated dielectric barrier members and ground member.
3. The apparatus of claim 2 , further comprising a voltage source electrically coupled to the electrodes for producing a dielectric barrier discharge between the elongated dielectric barrier members and the ground member, whereby plasma is formed to clean at least a portion of the probes.
4. The apparatus of claim 2 , wherein the elongated dielectric barrier members are arranged to define a plane.
5. The apparatus of claim 4 , wherein the elongated dielectric barrier members are spaced apart from each other at substantially regular intervals to define predetermined gaps therebetween.
6. The apparatus of claim 5 , wherein the predetermined gaps are sized to allow at least a portion of the probes to be introduced between the elongated dielectric barrier members and proximate the ground member.
7. The apparatus of claim 1 , wherein the ground member comprises a secondary ground grid.
8. The apparatus of claim 1 , wherein the ground member comprises a plurality of conductive spirals, each arranged to be coupled to the surface of one of said elongated dielectric barrier members.
9. The apparatus of claim 8 , wherein the conductive spiral is deposited on each respective one of the elongated dielectric barrier members.
10. The apparatus of claim 8 , wherein the conductive spiral is a discrete component secured on each of the elongated dielectric barrier members.
11. The apparatus of claim 7 , wherein the secondary ground grid comprises a conductive mesh positioned proximate the elongated dielectric barrier members.
12. The apparatus of claim 11 , wherein the conductive mesh is positioned a spacing C from the surface of the elongated dielectric barrier members, where spacing C is from about 0.0 mm to about 1 cm.
13. The apparatus of claim 12 , wherein spacing C is from about 0.5 mm to about 2 mm.
14. The apparatus of claim 2 , wherein the probes are introduced proximate the elongated dielectric barrier members.
15. The apparatus of claim 1 , wherein the elongated dielectric barrier members and ground plane are arranged so as to form orderly rows defining a predetermined gap between adjacent barrier members.
16. The apparatus of claim 1 , wherein the shape of the elongated dielectric barrier members is selected from the group consisting of tubular, circular, square, rectangular, oval, polygonal, triangular, trapezoidal, rhombus and irregular.
17. The apparatus of claim 1 , wherein the elongated dielectric barrier members are arranged in a non-planar configuration.
18. An apparatus for cleaning objects using plasma, comprising: a microplate further provided with a plurality of elongated dielectric barrier members arranged adjacent each other in a microtiter plate matrix format; a plurality of electrodes, each contained within, and extending substantially along the length of, respective ones of the elongated dielectric barrier members; and a ground member proximate the plurality of elongated dielectric barrier members.
19. The apparatus of claim 15 , wherein said orderly rows define gaps between adjacent barrier members that correspond in location to wells of a microtiter plate matrix format.