Methods for treating the surface of a solid body
AssigneeDigital Equipment Corporation
InventorKazuo Ishibashi
Life of this patent
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Abstract
A method for treating the surface of a solid to impart a desired degree of roughness by forming a large number of tiny indented points is disclosed. First, a large number of tiny liquid droplets is dispersed all over the surface of the solid. Then, a layer of a diluted solution of plastic dissolved in a volatile solvent is formed on the surface, covering the droplets. After the volatile solvent has evaporated, a plastic film containing a large number of tiny holes is formed on the surface of the solid. Etching is then done on the surface using the said plastic film as a mask, thus, a large number of tiny indented points are formed on the surface of the solid.
Claims12
A method for treating the surface of a solid body by forming a large number of tiny indented points, comprising the steps of:
- dispersing a large number of tiny liquid droplets over said surface;
- forming a layer of a diluted solution of a plastic dissolved in a volatile solvent on said surface;
- evaporating the volatile solvent, forming a plastic film containing a large number of tiny holes on said surface of the solid;
- and
- etching said surface using said plastic film as a mask.
A method for treating the surface of a solid by forming a large number of tiny indented points, comprising the steps of:
- adsorbing water repellent on said surface to form a water-repellent layer;
- dipping said surface into a volatile plastic solution that has been cooled down to near the dew point;
- pulling said surface out of said solution simultaneously forming a layer of said volatile plastic solution and a large number of tiny liquid droplets atop said solution layer;
- evaporating the volatile solvent, forming a plastic film containing a large number of tiny holes on said surface of the solid;
- and
- etching said surface using said plastic film as a mask.
Dependencies are inferred from the claim text.