A New Method of Preparation of a Self-Perforated Micro Plastic Grid and its Application (1)*

Abstract

A new method of preparation of micro plastic nets for specimen supporting has been developed. A microscope slide glass is finished by a water-repellent. Next, the slide glass is cooled below the dew-point to form minute dew-droplets on the surface of it. This water-droplets are covered with dilute solution of plastic. After volatilization of the solvent, plastic nets with perforated holes can be made very simply. Within the extent of 0.2˜10μ, a self-perforated plastic grid of a desired hole size can be obtained. When a similar operation is carried out on a specially minute water-droplets, thin plastic film with holes of 0.05˜0.15μ can be obtained. This film is very useful for correction of astigmatism of an electron microscope as high as 100,000 times or more in direct magnification.