Patent ID: 7326445
Filing Date: 2008-02-05
Classification: B33Y,B82Y,C23C,H01J

Abstract:
1. A method for forming a three-dimensional structure having a generally non-planar shape, comprising the steps of: irradiating a focused ion beam having an energy in the range of 5 to 100 keV onto a desired region of a substrate using a liquid ion source for producing ions; blowing phenanthrene source gas at a pre-set blowing density toward the desired region of the substrate to react with the focused ion beam to deposit a carbon film, the pre-set blowing density of the phenanthrene gas being set by raising the temperature of a container of phenanthrene to a temperature where phenanthrene gas from the container deposits on the substrate, then lowering the temperature of the container to a critical temperature at which the phenanthrene gas no longer deposits on the substrate, and then further lowering the temperature of the container to a temperature a few degrees lower than the critical temperature; and progressively moving the focused ion beam in a predetermined manner such that the deposited film grows into the three-dimensional structure.