Method of imparting contrast to a microscope object

Details Method of imparting contrast to a microscope object Method of imparting contrast to a microscope object

1974-06-07

1976-06-08

Edmundson, F.C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204165, B01K 100

Patent

active

039620573

ABSTRACT:
The method of imparting contrast to the surface of an object to be viewed microscopically comprises the steps of introducing the object into a vacuum chamber, connecting the object to the positive pole of a high voltage d.c. source, evacuating the chamber, bombarding the surface of the object with a gas-concentrated electron-ion beam, and feeding into the chamber a gas which reacts chemically with the bombarded object surface. Under the effect of the electron beam and negative or neutralized ions a reaction layer then forms which is characteristic of the component parts of the object material. This layer, after the conclusion of the contrasting process can be observed and evaluated under a microscope.

REFERENCES:
patent: 2935418 (1960-05-01), Berthold et al.
patent: 3171539 (1965-03-01), Holbrook et al.
patent: 3308049 (1967-03-01), Jones et al.
patent: 3418229 (1968-12-01), Lakshamanan et al.
patent: 3477936 (1969-11-01), Gillery et al.
patent: 3600122 (1971-08-01), Coleman
patent: 3604970 (1971-09-01), Culbertson et al.

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