  We describe the advantages of 2-dimensional, addressable arrays of spherical
Paul traps. They would provide for the ability to address and tailor the
interaction strengths of trapped objects in 2D and could establish a valuable
new tool for quantum information processing. Simulations of trapping ions are
compared to first tests using printed circuit board trap arrays loaded with
dust particles. Pair-wise interactions in the array are addressed by means of
an adjustable radio-frequency (RF) electrode shared between trapping sites. By
attenuating this RF electrode potential, neighboring pairs of trapped objects
have their interaction strength increase and are moved closer to one another.
In the limit of the adjustable electrode being held at RF ground, the two
formerly spherical traps are merged into one linear Paul trap.
