US3168646A - Device for varying the spatial position of specimens in electron microscopes - Google Patents

Device for varying the spatial position of specimens in electron microscopes Download PDF

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Publication number
US3168646A
US3168646A US181062A US18106262A US3168646A US 3168646 A US3168646 A US 3168646A US 181062 A US181062 A US 181062A US 18106262 A US18106262 A US 18106262A US 3168646 A US3168646 A US 3168646A
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United States
Prior art keywords
specimen carrier
tube
ring segments
cooled body
ring
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Expired - Lifetime
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US181062A
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English (en)
Inventor
Busch Siegfried
Hatschek Rudolf
Pischinger Franz
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Individual
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Individual
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/20—Means for supporting or positioning the object or the material; Means for adjusting diaphragms or lenses associated with the support

Definitions

  • the invention relates to a device for adjusting and altering the spatial position of articles, in particular of specimens in a treatment chamber for irradiation or vac- Hum-coating for electron microscopy, comprising a specimen carrier receiving the article to be treated and mounted in the treatment chamber in such a manner as to be displaceable and rotatable around at least two axes.
  • Devices of this type serve for the treatment of articles under certain conditions of pressure, temperature and radiation, said treatment requiring the spatial position of the articles to be continuously or intermittently altered while maintaining the prevailing critical conditions.
  • such devices can be used for the treatment of articles by corpuscular radiation or other types of radiation, such as X-rays or ultra-violet rays for a variety of technical and scientific purposes.
  • Further applications are the high-vacuum-coating of articles for the preparation of objects for electron microscopy, the production of refining or other coatings on metalloids or metals, on rheostats etc. as well as deepfreeze drying.
  • the temperature of the speci men carrier should be lower than the temperature of its immediate environment inside the treatment chamber, so that the provision of a cooling jacket or the like surrounding the specimen carrier is insufiicient to meet specific requirements.
  • the invention provides for a cooled body within the area of displacement of said specimen carrier. This offers the advantage that the specimen carrier can at any time be approached to the cooled body and cooled down by means of operating elements provided for the shifting and tilting of said specimen carrier. As a result of the heat-conductive contact thus established between the cooled body and the specimen carrier, the latter cools oif rapidly and its temperature can be decreased until it comes close to the temperature of the cooled body.
  • the cooled body can be maintained in an eifectively heat-conductive connection with a cooling jacket surrounding the specimen carrier, the cooling device provided for the cooling of the treatment chamber serving simply also to cool the specimen carrier.
  • This arrangement provides the possibility of cooling the specimen carrier quickly down to a lower temperature than its environment, since the heat-conductive connection thereby established by the cooled body between the cooling jacket and the specimen carrier, in particular also in a vacuum, ensures speedy and effective cooling of the specimen carrier.
  • the cooled body can be displaceable in the direction in which it can be approached by the specimen carrier, in opposition to a restoring force, preferably of an elastic nature.
  • this measure will preclude a deadlock when the specimen carrier and/or its operating mechanism abuts abainst the cooled body and on the other hand, a positive contact ensuring an effective transfer of heat between the specimen carrier and the cooled body is achieved, a further advantage residing in the equality of the given contact pressure.
  • FIG. 1 shows a sectional view through the longitudinal axis of the device according to the invention
  • FIG. 2 is a section through a detail on line IL-II of FIG. 1.
  • a cylindrical cooling jacket 1 is provided, e.g. inside a treatment chamber (not shown), which can be designed, for example, as a contamer serving to produce a vacuum, said cooling jacket being closed on top by a ring 2 and enclosing the specimen carrier 3.
  • the specimen carrier 3 is mounted on a tilting platform 4 in such a manner as to be rotatable around an axis extending in perpendicular relation to its plane, the tilting platform 4 carrying the specimen carrier 3 being pivoted on a supporting frame 5 and rotatable around an axis extending in parallel relation to the plane of the specimen carrier 3.
  • the specimen carrier 3 and the central part of the tilting platform 4 are shown in elevation in FIG. 1.
  • the supporting frame 5 comprises two horseshoeshaped ring segments 6 and 7 superjacent in spaced relation to each other, and interconnected at their open ends by brackets 8 and 8' respectively and on the closed side by another bracket 9. l
  • the supporting frame 5 is mounted on slide bars 10, 10 traversing the bracket 9 and maintained in position at their upper extremity by means of a ring 11, in such a manner as to be shiftable in the longitudinal direction of the device.
  • the ring 11 is further supported by columns 12, 12 provided outside the supporting frame 5.
  • the supporting frame 5 is displaced by means of a threaded spindle 13 rotatably mounted with its upper extremity in the ring 11, said spindle traversing the bracket 9 and co-operating with a female thread 14 provided in.
  • a cooled body comprising a tube 17 extending through the ring 11 of the holder and the horseshoe-shaped ring segment 6 as far as the area of the supporting frame 5, said tube presenting a flange 18 at its upper extremity, said flange being mounted on the ring 2 of the cooling jacket 1 by means of bolts 19.
  • a plurality of ring segments 20 are provided and pressed against sliding surfaces on the outer shell of the tube 17 by means of slotted spring rings 23 and 24 located in peripheral grooves 21 and 22.
  • spring rings 23 and 24 annular helical springs or the like can be used.
  • the ring segments 211' are slideable in the axial direction of the tube 17 against the action of helical pressure springs 25 engaging in bores 26 of the ring segments 2% and supported by the flange 18.
  • the bottornmost position of the ring segments 29 ' is determined by a shoulder 27 of the tube 17 against which corresponding shoulders of the ring segments 20 abut.
  • the ring segments 2% are elastically displaceable in the direction in which they can be approached by the specimen carrier 3, so as to provide a close heat-conduction contact between them and the specimen carrier 3 and also to preclude the risk of the threaded spindle 13 producing a deadlock when the specimen carrier 3 abuts against the ring segments 29.
  • the ring segments 20 are arranged with a clearance around the entire periphery of the tube 17, each ring segment 20 having a bore 26 to receive a return spring 25 of its own, so that the ring segments 26 are free to move within a certain area independently from one another and to apply themselves closely against the surface of the specimen carrier 3. This arrangement ensures a positive heat transfer between the specimen carrier 3 and the ring segments 2h.
  • the ring segments 24 are of comparatively great height, so as to present correspondingly large sliding surfaces applied against the tube 17 and chiefly responsible for the trans fer of heat.
  • a positive heat conduction is provided via the ring segments 29, the tube 117, the flange 18 and the ring 2 between the specimen carrier 3 and the cooling jacket 1, thus ensuring efficient and rapid cooling of the specimen carrier.
  • a device for adjusting and altering the spatial position of articles, in particular of specimens in a treatment chamber for irradiation or vacuum-coating for electron microscopy comprising a specimen carrier receiving the article to be treated and mounted to be displaceable and rotatable around at least two axes, a cooled body provided within the area of displacement of the said specimen carrier, the latter may be brought into a heatconductive contact with the cooled body, the said cooled body comprises a tube, ring segments mounted on said tube to be displaceable thereon in an axial direction and t flexible means for maintaining the said ring segments in position on the said tube.
  • a device in which springs are provided acting on the said ring segment in an axial direction and opposing the dispiacement of the ring segments.

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Physical Vapour Deposition (AREA)
US181062A 1961-04-13 1962-03-20 Device for varying the spatial position of specimens in electron microscopes Expired - Lifetime US3168646A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT295761A AT227797B (de) 1961-04-13 1961-04-13 Einrichtung zum Einstellen und Verändern der Raumlage von in einer Behandlungskammer zu behandelnden Gegenständen

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US3168646A true US3168646A (en) 1965-02-02

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US181062A Expired - Lifetime US3168646A (en) 1961-04-13 1962-03-20 Device for varying the spatial position of specimens in electron microscopes

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US (1) US3168646A (de)
AT (1) AT227797B (de)
CH (1) CH397368A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3388251A (en) * 1963-07-11 1968-06-11 Grasenick Fritz Device for the cooling or heating of objects arranged on a specimen carrier
US4155011A (en) * 1976-12-27 1979-05-15 Balzers Aktiengesellschaft Fur Hochvakuumtechnik Und Dunne Schichten Apparatus for treating substrates with an ion beam
US4284894A (en) * 1979-02-17 1981-08-18 C. Reichert Optische Werke, Ag Cold chamber for the working objects for microscopic and electron microscopic investigations

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499019A (en) * 1949-01-29 1950-02-28 Rca Corp Adjustable specimen support for electron-optical instruments
US2626359A (en) * 1951-10-16 1953-01-20 Jr Frank R Weber Target for particle accelerators
US2826701A (en) * 1954-09-01 1958-03-11 Gen Electric Low temperature chamber for electronoptics instruments
GB794356A (en) * 1954-07-14 1958-04-30 Siemens Ag Improvements in or relating to electron microscopes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499019A (en) * 1949-01-29 1950-02-28 Rca Corp Adjustable specimen support for electron-optical instruments
US2626359A (en) * 1951-10-16 1953-01-20 Jr Frank R Weber Target for particle accelerators
GB794356A (en) * 1954-07-14 1958-04-30 Siemens Ag Improvements in or relating to electron microscopes
US2826701A (en) * 1954-09-01 1958-03-11 Gen Electric Low temperature chamber for electronoptics instruments

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3388251A (en) * 1963-07-11 1968-06-11 Grasenick Fritz Device for the cooling or heating of objects arranged on a specimen carrier
US4155011A (en) * 1976-12-27 1979-05-15 Balzers Aktiengesellschaft Fur Hochvakuumtechnik Und Dunne Schichten Apparatus for treating substrates with an ion beam
US4284894A (en) * 1979-02-17 1981-08-18 C. Reichert Optische Werke, Ag Cold chamber for the working objects for microscopic and electron microscopic investigations

Also Published As

Publication number Publication date
CH397368A (de) 1965-08-15
AT227797B (de) 1963-06-10

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