Specimen-cooling device

Details Specimen-cooling device Specimen-cooling device

1996-11-27

1999-01-12

Capossela, Ronald C.

Refrigeration

Storage of solidified or liquified gas

Including cryostat

62383, F25B 1900

Patent

active

058573410

ABSTRACT:
There is disclosed a sample-cooling device for efficiently cooling a sample observed with a scanning probe microscope down to a cryogenic temperature. Cryogenic temperature provided by liquid nitrogen is transferred to a stage base plate from a liquid nitrogen vessel via a heat shield on the side of the cryogenic source, a first flexible conductor, and a heat shield on the sample side. The whole stage base plate is cooled to the liquid nitrogen temperature. Cryogenic temperature provided by liquid helium is transferred from a liquid helium vessel to a heat conductor on the sample side via a heat conductor on the side of the cryogenic source, a heat shield on the side of the cryogenic source, a second flexible heat conductor, and a heat shield on the sample side. The heat conductor on the sample side is cooled to the liquid helium temperature. The cryogenic temperature is then transferred to the sample via a probe electrode in contact with the heat conductor on the sample side. As a result, the sample is cooled by the cryogenic temperature provided by the liquid helium.

REFERENCES:
patent: 4408464 (1983-10-01), Salour et al.
patent: 4459823 (1984-07-01), Josephs et al.
patent: 4495782 (1985-01-01), Salour et al.
patent: 4644761 (1987-02-01), Chatzipetros et al.
patent: 5237825 (1993-08-01), Menzl et al.
patent: 5410910 (1995-05-01), Somlyo et al.
patent: 5542256 (1996-08-01), Batey et al.

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