Patent Number: 
Section: claims

1. A grid holder for retaining a specimen grid, the grid holder comprising:a body sized to hold one or more specimen grids, the body comprising a slot in its interior, the slot including sides for receiving the specimen grid, wherein the specimen grid is a flat disk or a partial disk with edges and a pair of opposing faces, wherein one face of the specimen grid optionally has a specimen thereon;wherein the slot is sized to receive the specimen grid through an open top end of the slot, the slot having sides tapering from the top end to a bottom end of the slot, such that the bottom end of the slot is smaller than the specimen grid; andwherein the slot further is configured to contact the specimen grid along at least a portion of edges of the specimen grid to secure the specimen grid by engagement of the edges of the specimen grid with the sides of the slot, wherein the opposing faces of the grid do not contact the slot. 2. The grid holder of claim 1, wherein the grid is made of a resilient deformable material and the interior of the slot is configured to deflect the grid sideways as the grid is inserted into the slot, so that the grid exerts tension against the interior of the slot to hold the grid within the slot. 3. The grid holder of claim 1, wherein the bottom of the slot is closed. 4. The grid holder of claim 1, wherein the bottom of the slot is open. 5. The grid holder of claim 4, wherein the slot is configured to permit the exposure of the grid within the slot to one or more reagents, chemical treatments, preparation compounds or treatment environments to prepare any specimen held on the grid for examination. 6. The grid holder of claim 4, wherein the body is made of a chemically resistant material. 7. The grid holder of claim 1, wherein the body of the grid holder is made of a resilient deformable material and the material within the slot deflects in response to the insertion of the grid and exerts tension on the grid to retain the grid within the slot. 8. The grid holder of claim 1, wherein the slot is sized to so that insertion of the grid into the slot causes the grid to deflect and a resistance to deflection of the grid exerts tension on the sides of the slot to hold the grid within the slot, the slot further being configured so that deformation of the grid does not bring areas of the side of the grid that are distant from the edge into contact with the grid holder. 9. The grid holder of claim 1, wherein the grid is an electron microscope grid. 10. The grid holder of claim 4, wherein the grid is an electron microscope grid. 11. The grid holder of claim 1, the body further comprising a plurality of slots. 12. The grid holder of claim 1, further comprising the grid holder being made of a suitable material to retain the grid for processing, storage and analysis of a specimen on the grid, so that a grid need not be removed from the grid holder once placed in the slot. 13. The grid holder of claim 1, further comprising a cap configured to close off the open top of the slot. 14. The grid holder of claim 13, the cap further comprising a tab configured to extend into the slot and maintain the grid in position within the slot when the cap is closing off the open top of the slot. 15. The grid holder of claim 13, wherein the cap is attached to the grid holder by a living hinge. 16. The grid holder of claim 1, wherein the grid holder includes a plurality of slots and indicia are included corresponding to each slot. 17. A device for retaining a thin aperture, the device comprising:a body sized to hold one or more thin apertures, the body comprising a slot in its interior, the slot including sides for receiving the thin aperture, wherein the thin aperture is a flat disk with edges and a pair of opposing faces;wherein the slot is sized to receive the thin aperture through an open top end of the slot, the slot having dies tapering from the top end to a bottom end of the slot, such that the bottom end of the slot is smaller than the thin aperture; andwherein the slot is configured to contact the thin aperture along at least a portion of the edges of the thin aperture to secure the thin aperture to allow sideways deformation of the aperture without opposing faces of the thin aperture contacting the slot. 18. The device of claim 17, wherein the grid is made of a resilient deformable material and insertion of the grid within the slot causes the grid to deform and exert pressure against the opposing sides of the slot along opposing edges of the grid. 19. The device of claim 17, wherein the body is mode of a resilient deformable material and insertion of the grid within the slot causes the opposing sides of the slot to deform and exert pressure on the opposing edges of the grid to secure the grid with the slot. 20. A device for retaining a thin disk, the device comprising:a body sized to hold one or more thin disks, the body comprising a slot formed in its interior, the slot including sides for receiving the thin disk, wherein the thin disk has edges and a pair of opposing sides and is made of a resilient deformable material;wherein the slot is sized to receive the thin disk through an open top end of the slot, the slot having sides tapering from the top end to a bottom end of the slot, such that the bottom end of the slot is smaller than the thin disk; andwherein the slot is configured to contact the thin disk along at least a portion of the edges of the disk and to allow sideways deformation of the disk without opposing faces of the thin disk contacting the slot. 21. The grid holder of claim 1, wherein the body of the grid holder is a capsule and the slot is formed in the interior of the capsule. 22. The grid holder of claim 1, wherein the grid holder comprises a plurality of slots within the body of the grid holder for holding a plurality of sample grids.