Method for using pulsed optical energy to increase the bondability of a surface
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United States of America Patent
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Apr 30, 1996
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app pub date -
Sep 2, 1994
filing date -
May 19, 1992
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Abstract
A method and system for improving the capability of a surface of an organic structure to bond with another material includes irradiating a target area of the surface of a structure with pulsed, incoherent optical energy having wavelength components which range from 160-5000 nanometers at an intensity sufficient to photodecompose any adventitious organic substances on the surface and to photodecompose a thin layer of molecular bonds forming the surface of the structure; and exposing the target area of the surface to ionized gas that chemically reacts with the target area of the surface to increase the surface free energy of the surface. A similar method and system may also be employed to improve the bondability of a metallic surface by first precleaning the metallic surface to dislodge any inorganic substances from the surface; and second irradiating a target area of the surface with pulsed, incoherent optical energy having wavelength components in the range of 160-5000 nanometers at an intensity sufficient to photodecompose any organic substances present on the surface.
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