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Browse Prior Art Database

Microscope Stage Sample Holder with Variable Temperature Range

IP.com Disclosure Number: IPCOM000082737D
Original Publication Date: 1975-Jan-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Tynan, EE: AUTHOR [+2]

Abstract

This holder allows the study of the transverse thermoelectric effect in metallic films as a function of temperature, over a wide temperature range with good temperature stability. Particularly small samples can be thermally cycled.

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Microscope Stage Sample Holder with Variable Temperature Range

This holder allows the study of the transverse thermoelectric effect in metallic films as a function of temperature, over a wide temperature range with good temperature stability. Particularly small samples can be thermally cycled.

The holder fits on the stage of a microscope and has several feedthroughs that allow electrical monitoring to take place through the vacuum chamber. A window I on the top plate H permits small sample regions to be selected with a microscope. Electrical contacts J can be made to the film under study, and optical excitation can be directed at selected portions of the sample through the window I. Stability of the temperatures obtained by the holders is better than 1 degrees K.

To cool the samples below room temperature, liquid nitrogen boil-off or liquid helium boil-off can be used, which are circulated through the sample stage tubing
C. Heating of the film samples is achieved by applying a voltage to a heater coil B wrapped around the outside copper stage A. Thermocouples are used to monitor the temperature of the sample or stage.

Experiments on the operation of this holder indicate that it has a temperature range between 30 and 800 degrees K, without requiring the use of customary expensive and cumbersome temperature control units.

Its applicability should extend to a wide variety of other experiments.

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