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Re:Sticky tape generates X-rays (2008) by ralfruns on Saturday September 05, 2015 @12:21PM (#10175218)
Tribogenics (http://tribogenics.com/) turned this discovery in to an actual product. I think they moved from tape to using disks that oscillate to connect and disconnect. (http://singularityhub.com/2013/11/16/southern-california-sta...)
Re:Sticky tape generates X-rays (2008) by ortusdux on Saturday September 05, 2015 @12:45PM (#10175297)
It looks like they use a single band looped over a rod. It appears to be very similar to a Van De Graaff generator.

http://tribogenics.com/wp-content/uploads/2015/08/Eli-Paper-...