Photodecontamination of surfaces

Details Photodecontamination of surfaces Photodecontamination of surfaces

1987-09-08

1989-09-19

Lander, Ferris H.

Tobacco

Cigar or cigarette making

Including cooperating surfaces to induce rolling

B08B 700

Patent

active

048677965

ABSTRACT:
As a method of decontaminating a surface covered with a chemical contaminant, a light-absorption agent providing a relatively high neutral density is applied to the surface in intimate contact with the contaminant. Then one or more flashes of high intensity, broad-band frequency, incoherent light is applied to the surface, whereupon, the light-absorption agent converts the absorbed light energy to heat, resulting in vaporization and/or decomposition of the contaminant. The heat generated by the short duration flash is localized at the material on the surface and at a very thin surface layer, and vaporization of the surface material dissipates the heat that is generated, whereby, the surface is substantially unaffected by the process.

REFERENCES:
Brannon, "Citric Acid Augmented Flashlamp Cleaning of Corroded Steel Surfaces", Applic. of Surf. Sci (9), pp. 14-21, 1981.

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