Argon and helium plasma apparatus and methods
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United States of America Patent
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Aug 2, 2016
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N/A
app pub date -
Dec 18, 2014
filing date -
Dec 18, 2013
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Abstract
An argon and helium plasma apparatus and method are disclosed that operate with argon or helium at atmospheric pressure, and at low temperatures, and with high concentrations of reactive species in the effluent stream. Laminar gas flow is developed prior to forming the plasma and at least one of the electrodes is heated which enables operation at conditions where the argon or helium plasma would otherwise be unstable and either extinguish, or transition into an arc. The apparatus and method can be employed to remove organic materials from a substrate, thereby cleaning the substrate; activate the surfaces of materials thereby enhancing adhesion between the material and an adhesive; kill microorganisms on a surface, thereby sterilizing the substrate; etches thin films of materials from a substrate, and deposit thin films and coatings onto a substrate.
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