Selectively etched bodies

Details Selectively etched bodies Selectively etched bodies

1980-12-19

1982-08-17

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156646, 156656, 156657, 1566591, 156644, 204192E, 252477R, 428929, 428606, C23F 102

Patent

active

043448160

ABSTRACT:
Bodies having conical structures with dimensions on the order of the wavelength of visible light are prepared by a specific process. This process involves the formation of a mask by depositing a material that forms the mask onto the body to be etched and choosing the mask material so that it does not substantially wet the surface of the body. The mask thus fabricated has hill-type formations where the spacings between these formations are of the order of the wavelength of visible light. An etchant that etches the mask at a specific rate relative to the underlying body is then used to perform the etching procedure. Exemplary bodies produced by the procedure include tungsten textured bodies that exhibit light emissivities significantly higher than those possessed by the corresponding untreated tungsten material.

REFERENCES:
patent: 3971684 (1976-07-01), Muto
patent: 4203800 (1980-05-01), Kitcher
patent: 4226665 (1980-10-01), Mogab
patent: 4284689 (1981-08-01), Craighead et al.

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