The artist who uses Tesla coils is David Archer.  He was once a Seattle
resident.  I don't know his current whereabouts.
 
His work is fairly widespread.  The last time I remember seeing it was
on the cover of Omni magazine: it often looks like deeply colored nebulae
in space, with perfectly circular planets scattered about.  He works on
glass, and lets the many feet of Tesla coil discharge play across a
horizontally-supported glass plate covered with wet paint.  Somewhere I
have an article on him which has a photo of he and his coils in action.
 
.....................uuuu / oo \ uuuu........,.............................
William Beaty  voice:206-781-3320   bbs:206-789-0775
EE/Programmer/Science exhibit hobbyist
Seattle, WA 98117