Plasma Technology for Surface Modification a fifteen minute introduction Thierry Corporation Plasma Science and Technology George Osenga

Topics of Discussion Plasma definition, an introduction Surfaces, an introduction Plasma surface, modification defined Plasma applications for manufacturing Conclusions

Plasma Definition Introduction Plasma is a (partially) ionized gas in which ions, electrons, and photons are present as well as radicals and molecules in an excited state

Plasma Definition Introduction Plasma is a (partially) ionized gas in which ions, electrons, and photons are present as well as radicals and molecules in an excited state GASES GONE WILD

Plasma Definition Introduction Currently in industry we use two types of plasma. –Plasma generated in a vacuum or low pressure plasma –Plasma generated at near atmospheric pressure

Plasma Definition Introduction Plasma is also defined by the gas or gases used to make up the plasma Common gases used in generating plasma in manufacturing today are: oxygen, argon, nitrogen, hydrogen, sulfur hexafluoride and many more

Plasma Definition Introduction Cold plasma discharges are generated by passing enough electrical current through a gas to cause the gas to change state This electrical current often defines the process to generate the type of plasma: radio frequency, microwave, inductively coupled, and pulsed direct current

Introduction to Surfaces Surfaces commonly found in manufacturing that are plasma treated are defined by their composition Examples of common materials: metals, plastics, rubber, elastomers, polymers, glass, ceramics, powders and liquids

Introduction to Surfaces There are virtually no size or shape limitations when it comes to plasma processing Plasma systems are built to process something as small as a contact lens or as large as an aircraft wing Plasma conforms to the shape of the articles or items it surrounds

Introduction to Surfaces Surfaces can also be treated when moving Surfaces are treated during in-line process Surfaces are treated when tumbled Surfaces are treated in roll to roll Surfaces like powders or liquids

Plasma Applications for Manufacturing Plasma Clean Plasma Activate Plasma Etch Plasma Deposition/Coating

Plasma Applications for Manufacturing Plasma Clean Inorganic Compounds -oils, mold release, polymer bleed, drill smear, fingerprints, solder flux, carbon ash Inorganic -metal oxides, metal oxide reduction Decontamination -extracellular debris, pyrogens, proteins, DNA, RNA

Plasma Applications for Manufacturing Plasma Activate Surface Activation – THE MOST COMMON (raise the surface energy) Surface Passivation

Plasma Applications for Manufacturing Plasma Etch Chemical Etch Physical Etch

Plasma Applications for Manufacturing Plasma Deposition/Coating Hydrophobic (does not like water) -Fabrics, Footwear, Electronics, Medical Devices Hydrophilic (likes water) -Fabrics, Contact Lenses, Medical Devices Oleophobic (does not like oil) -Electronics, Optics, Marine Products

Conclusions Plasma processing in manufacturing is: safe, clean, and cost effective Plasma equipment and technical experts are available Plasma processing increases: quality, productivity, and profit

Topics Discussed Plasma definition, an introduction Surfaces, an introduction Plasma surface, modification defined Plasma applications for manufacturing Conclusions

Thierry Corporation Plasma Science and Technology George Osenga Director of Operations North America, Mexico & Canada Phone: (248)