Specimen holder having alignment marks
View Patent ↗For the microscopy of an object or a specimen with a combination of optical microscopy and particle beam microscopy, an electrically conducting specimen carrier ( 1 ) is used which is configured for use in a particle beam microscope as well as in an optical microscope and has at least one alignment mark ( 2 ). The alignment mark is configured as a pass-through structure and is detectable from the top and from the bottom of the specimen carrier.
1. A specimen carrier for carrying an object for examination in an optical microscope, particle beam microscope and a combined optical and particle beam microscope, the specimen carrier comprising:
an electrically-conductive holder having an upper side and a lower side;
an alignment mark arranged on said holder; and,
said alignment mark being configured as a pass-through structure detectible from said upper side and said lower side.
2. The specimen carrier of claim 1 , wherein said specimen carrier comprises three of said alignment marks which conjointly define a coordinate system for said specimen carrier.
3. The specimen carrier of claim 2 , wherein each of said alignment marks is configured as a double mark adapted to two different microscopy magnification levels.
4. The specimen carrier of claim 1 , wherein said alignment mark is L-shaped.
5. A specimen carrier for carrying an object for examination in an optical microscope, particle beam microscope and a combined optical and particle beam microscope, the specimen carrier comprising:
an electrically-conductive holder having an upper side and a lower side;
a plurality of alignment marks arranged in said holder;
a plurality of through openings formed on said holder for accommodating respective ones of said alignment marks; and,
each of said alignment marks being configured as a pass-through structure defined by an electrically-conductive marker foil and being seated in a corresponding one of said openings so as to be detectible from said upper side and said lower side.
6. The specimen carrier of claim 5 , wherein said holder has a plurality of recesses formed therein at corresponding ones of said through openings for positioning the corresponding marker foil on said holder.
7. The specimen carrier of claim 6 , wherein the pass through in each of said marker foils is formed by a laser engraving.
8. The specimen carrier of claim 7 , wherein each of said marker foils is bonded to said holder with an electrically-conductive adhesive.
9. The specimen carrier of claim 7 , wherein each of said marker foils is welded to said holder.
10. A method of microscopically examining an object arranged on a specimen carrier which includes an electrically-conductive holder having an upper side and a lower side; an alignment mark arranged on said holder; and, said alignment mark being configured as a pass-through structure detectible from said upper side and said lower side, the method comprising the steps of:
placing the specimen carrier having said object arranged thereon in one of said microscopes;
examining an object with said one microscope;
placing the specimen carrier having said object arranged thereon in an other one of said microscopes; and,
examining said object with said other one of said microscopes.
11. A specimen carrier for carrying an object for examination in an optical microscope, particle beam microscope and a combined optical and particle beam microscope, the specimen carrier comprising:
an electrically-conductive holder having an upper side and a lower side;
a clear-through opening formed in said holder;
a marker foil seated in said opening in spaced relationship to both said upper side and said lower side thereby protecting said foil against damage from personnel handling the specimen carrier; and,
an alignment mark cut into said marker foil so as to be detectable from said upper side and from said lower side.
12. The specimen carrier of claim 11 , wherein said alignment mark is configured as a double mark adapted to two different microscopy magnification levels.
13. The specimen carrier of claim 11 , wherein said alignment mark is L-shaped.
14. The specimen carrier of claim 11 , wherein said alignment mark is formed by a laser engraving.
15. The specimen carrier of claim 11 , wherein said marker foil is bonded to said holder with an electrically-conductive adhesive.
16. The specimen carrier of claim 11 , wherein said marker foil is welded to said holder.