Abstract
This investigation was conducted on the accurate control of the surface characteristics of the glassy carbon (GC) by radio- frequency (13.56MHz) glow discharge plasmas. We developed two methods of controlling surface characteristics. These were the mixed gas (SF6+O2) plasma treatment method and two-step plasma (SF6 plasma, O2 plasma) treatment method. The contact angle of water to the GC surface was controlled by these methods. The mixed gas plasma method was the best, because the control of the contact angle is easy and wide, and the contact angle change with time after the plasma treatment could be minimized by this method.
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