Abstract

A heating device compatible with the standard JSM-2 goniometer stage has been developed, thereby providing rapid interchangeability between normal and hot stage microscopy. The hot stage is designed for temperatures ranging from 25 to 700°C and requires only minor modification to and interference with normal microscope functions. The heating carriage is inserted or removed through the airlock like a normal specimen holder; power and thermocouple leads are connected through the standard instrument patch board, and the main structural components consist of stainless steel, copper, nickel and sapphire. Other important internal components of this system include a large cryogenic surface above the specimen carriage and a water chilled base plate which replaces the normal solid dovetail plate. Externally, a direct current power source and a recorder to monitor temperature are required.Fig. 1 shows the arrangement of the heating device and electrical contacts. The hot stage consists of a carriage with the normal dovetail runners which supports the heating device, thermal shielding structure, and electrical connections.

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