Abstract: A corona/plasma treatment machine includes an array of electrodes arranged in a helix along a conductive central cylinder, allowing for the efficient surface treatment of materials with greater cross-sectional heights and widths than what is conventionally possible. The corona/plasma treatment machine further includes of a high frequency, high voltage power source, a dielectric, and a contact plate. The array of electrodes is driven using a motor and rotates about its longitudinal axis and is electrically isolated from its surroundings. When power is supplied to the electrode array, electrical energy is discharged from the tips of the electrodes near the contact plate and creates a plasma corona aura formed from the ionization of the surrounding air between the electrode array and the contact plate. A conveyor is positioned below the electrode array and configured to feed material through the plasma corona aura.